Rockbank - Mount Cottrell

SA2

Greater Melbourne / Melton - Bacchus Marsh

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Sep 2026 · Refreshed ABS QuickStats 213041359 How we calculate this
Chart Color Schemes
Loading map data ...
Statistical Area (SA2) Boundary Analysis

This analysis uses ABS Statistical Areas Level 2 (SA2) boundaries, which can materially differ from Suburbs and Localities (SAL) even when sharing similar names.

SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (e.g., census and ERP).

Suburbs and Localities (SAL) represent commonly-used suburb/locality names (postal-style areas) and may use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

0 People

est. as @ -- *

ABS ERP | -- people | --

2021 Census | -- people

Land Area
--
Land Area
Population Density
--
Density
Unemployment Rate
--
Unemployment
Development
--
Resi Approvals
Get My Report

Sales ActivityProperty Sales Trends in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

Curious about local property values? Filter the chart to assess the volume and appreciation (including resales) trends and regional comparisons, or scroll to the map below view this information at an individual property level.

Median Price
$0
1yr Sales Volume
0
Find a Recent Sale
Type Specified (1) | Limit 50

Sales Detail

Loading rental data…

DemographicsPopulation Growth in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

Rockbank - Mount Cottrell has an estimated 39,743 residents, up from 17,553 at the 2021 Census — a change of 22,190 people, or 126.4%. Growth has averaged 21.9% a year over five years, faster than 99% of areas nationally. 7,528 new addresses have been validated here since Census night. Interstate and internal migration accounts for 78.1% of that increase. That puts 316 residents on each square kilometre. Population is estimated from ABS Estimated Resident Population releases and GNAF address data, re-based from the 2021 Census and updated annually.

Detail

According to research conducted by AreaSearch, the resident count in Rockbank - Mount Cottrell stands at approximately 39,743 as of Aug 2026. This represents an expansion of 22,190 people (126.4%) compared to the 2021 Census, when 17,553 people were counted. This figure is derived from the ABS estimated resident population of 37,532 recorded as of June 2025 alongside 7,528 validated new addresses confirmed following the Census. The local population density works out to 316 persons per square kilometer, indicating generous space per resident and substantial scope for additional building. Surpassing both Victoria (9.5%) and nationwide figures, Rockbank - Mount Cottrell's 126.4% surge since the 2021 census positions it at the forefront of regional expansion.

Net interstate migration served as the primary catalyst, delivering around 78.1% of recent population gains, though overseas arrivals and natural increase also provided positive contributions. AreaSearch incorporates ABS/Geoscience Australia projections for SA2 locations published in 2024 (using 2022 as baseline data). For locations not covered by this series, AreaSearch applies the VIC State Government's Regional/LGA projections from 2023, utilizing a weighted aggregation model to translate LGA growth to SA2 boundaries. Age cohort growth rates derived from these models are also applied across every locality for the 2032 to 2041 period. Looking ahead, the locality is forecast to experience remarkable expansion placing it within the top 10 percent of statistical areas across the nation, adding 55,146 persons to 2041 according to the most recent annual ERP statistics, which equates to an overall gain of 129.0% across the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the Rockbank - Mount Cottrell SA2?
Total population for the Rockbank - Mount Cottrell SA2 was estimated to be approximately 39,743 as at Aug 26. This is based upon an estimated resident population of 37,532 from the ABS up to June 2025.
How has the population in the Rockbank - Mount Cottrell SA2 changed since 2021?
The rockbank - mount cottrell sa2 has added approximately 22,190 people and shown a 126.42% increase from the 17,553 people recorded at the 2021 Census period.
What is the population density in the Rockbank - Mount Cottrell SA2?
The population density in the Rockbank - Mount Cottrell SA2 is estimated at 316 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the Rockbank - Mount Cottrell SA2?
Over the past 10 years, the population in the Rockbank - Mount Cottrell SA2 has shown a compound annual growth rate of 28.0% per annum.
What are the main drivers of population growth in the Rockbank - Mount Cottrell SA2?
Population growth in the Rockbank - Mount Cottrell SA2 is driven by: Interstate migration (78.1%), Natural increase (18.1%), Overseas migration (3.8%). The primary driver is Interstate migration, contributing 78.1% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

8,737 new dwellings have been approved in Rockbank - Mount Cottrell over the past five years, an average of 1,747 a year. That places the area in the 98th percentile for residential development activity nationally, about 44 approvals per 1,000 residents a year. Of the 1,748 dwellings approved in the latest reporting year, 90% were detached houses and the rest townhouses or apartments. Figures come from ABS building approvals aggregated to this SA2 boundary and are updated monthly as the ABS releases them.

Detail

Residential building approvals in Rockbank - Mount Cottrell have run at an annual average of roughly 1,747 new dwellings, totaling 8,737 homes permitted over the past 5 financial years (between FY-22 and FY-26). An average intake of 2.6 new residents per year has been added for every home constructed over the past 5 financial years (between FY-22 and FY-26), underpinning real estate demand. The typical construction value of these new residences sits at $344,000—below the wider region's baseline—offering relatively attainable options for purchasers. In addition, approved commercial works have reached $587.2 million this financial year, underscoring strong local non-residential development.

On a per-person metric, Rockbank - Mount Cottrell records 209.0% more residential approvals than Greater Melbourne, expanding options for prospective buyers even as construction pace has cooled somewhat recently. This rate substantially outpaces national figures, highlighting intense developer interest. Detached houses comprise 90.0% of new residential approvals while attached formats make up 10.0%, preserving the district's open suburban character with properties tailored to families seeking spacious living. Tracking at approximately 19 people per approval, Rockbank - Mount Cottrell continues to exhibit the hallmarks of an active growth corridor. Demographic projections suggest that Rockbank - Mount Cottrell will incorporate 51,259 residents through to 2041 relative to the newest AreaSearch quarterly estimate. Provided construction continues at current paces, new home additions appear well placed to satisfy demographic demand, creating favorable market conditions for purchasers and potentially enabling growth to outstrip current forecasts.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the Rockbank - Mount Cottrell SA2 recently?
Dwelling approval activity in the the Rockbank - Mount Cottrell SA2 area has seen 3,497 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Rockbank - Mount Cottrell SA2's current population of 39,743 has been supported by 1,747 approvals on average over recent years.
How does the Rockbank - Mount Cottrell SA2's development activity compare to the broader region?
The Rockbank - Mount Cottrell SA2 has seen 6.97 approvals per 100 people in recent years, compared to 0.86 approvals in the broader region. This means that one dwelling has been approved for every 19 people in the Rockbank - Mount Cottrell SA2, compared to one for every 121 in the broader region.
Is the Rockbank - Mount Cottrell SA2 keeping up with housing demand?
With the population expected to increase by 51,259 people by 2041, around 17,087 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 3.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
What has been the trend in development approvals over the past five years in the Rockbank - Mount Cottrell SA2?
Looking at development activity over the past five years, the Rockbank - Mount Cottrell SA2's approval levels have been consistent with the yearly average of 1,747, showing stable development patterns.
How many dwellings will be needed to accommodate future population growth in the Rockbank - Mount Cottrell SA2?
The population in the Rockbank - Mount Cottrell SA2 is expected to grow by 51,259 people by 2041, necessitating approximately 17,087 new dwellings. This calculation is based on the current census average of 3.0 persons per dwelling in the area.
How does recent development compare to population growth in the Rockbank - Mount Cottrell SA2?
Over the past five years, the population in the Rockbank - Mount Cottrell SA2 has grown by approximately 34,096 people, while 8,737 residential approvals were recorded. This equates to a ratio of 3.9 people added for each new dwelling approval. This high ratio suggests strong population growth relative to housing supply, potentially indicating unmet housing demand.
Are there opportunities for residential developers in the Rockbank - Mount Cottrell SA2?
With dwelling approval activity running at an average of 1,747 approvals per year and a population of 39,743, the market appears to be adequately supplied relative to projected housing demand in recent years, suggesting that developers should have a longer-term approach when considering new projects. With the population expected to increase by 51,259 people by 2041, around 17,087 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 3.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
Approvals Pipeline Development applications near Rockbank - Mount Cottrell

Development applications around Rockbank - Mount Cottrell

Development approvals is a new addition to AreaSearch. We’re actively expanding council coverage and refining the dataset — details and statuses for some councils may be partial. Check back regularly for the latest pipeline.
Application search is not available in Victoria. AreaSearch holds 23 applications for Rockbank - Mount Cottrell, but they are a record of past activity rather than a current register. Victoria has no state-wide planning portal and its council coverage is uneven, so we have switched the search off here rather than return partial answers. We are currently investigating a solution. No credits are charged for Victorian applications, and building approvals from the ABS and the major projects we track are unaffected.

SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.

Project PipelineInfrastructure & Major Projects in Rockbank - Mount Cottrell

PROFILE FAQ

AreaSearch tracks 58 current infrastructure and development projects inside Rockbank - Mount Cottrell, worth an estimated $34.5 billion. A further 140 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $60.5 billion. 93 are already under construction and 75 are due for completion within three years. The pipeline spans residential development, communities, precincts & urban renewal and transport & logistics. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Infrastructure investments and urban planning initiatives play a decisive role in shaping local development and accessibility. AreaSearch has tracked a total of 156 projects with the potential to influence the surrounding district. Prominent undertakings include the Melton Line Upgrade, Thornhill Park, Woodlea Active Open Space Precinct, and the Kororoit Part 2 Precinct Structure Plan, with key developments detailed below.

Professional plan users can use the search below to filter and access additional projects.

INFRASTRUCTURE SEARCH
All Selected

AI Generated Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the Rockbank - Mount Cottrell SA2?
Key infrastructure and planning changes likely to influence the Rockbank - Mount Cottrell SA2 include: Melton Line Upgrade (Construction); Thornhill Park (Construction); Woodlea Active Open Space Precinct (Construction); Kororoit Part 2 Precinct Structure Plan (Planning); and Willow Springs (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the Rockbank - Mount Cottrell SA2?
Infrastructure development impacting the Rockbank - Mount Cottrell SA2 spans multiple sectors including Residential Development, Communities, Precincts & Urban Renewal, and Sports & Recreation, among others.
What is the scale of infrastructure investment impacting the Rockbank - Mount Cottrell SA2?
Infrastructure investment analysis indicates substantial capital deployment exceeding $10.3 billion in projects that will impact the extended area, with a notable concentration of investment within the immediate the Rockbank - Mount Cottrell SA2 vicinity.
How does the Rockbank - Mount Cottrell SA2's infrastructure development compare to other areas?
With an infrastructure score in the top 40%, the Rockbank - Mount Cottrell SA2 demonstrates above-average development activity compared to national benchmarks.
Melton Line Upgrade
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

The 650 million dollar Melton Line Upgrade is preparing the corridor to run longer 9-car VLocity trains from 2027, one year ahead of schedule, boosting peak passenger capacity by 50 per cent. The project includes platform extensions at Caroline Springs and Deer Park (already complete), with extensions at Rockbank and Cobblebank scheduled for 2026. A new train stabling yard is being built at Cobblebank (Abey Road), 700 metres east of the new Melton Station, designed to operate 24/7 and future-proofed to stable Metro trains when the line is later electrified.The yard will feature dedicated worker facilities and parking, CCTV, a solar system and native landscaping. Construction commenced in January 2026, with the stabling yard early works underway and main construction starting mid-2026. The project is jointly funded with 325 million dollars each from the Australian and Victorian governments and works alongside the new four-platform elevated Melton Station opening in late 2026 and the four Melton Level Crossing Removals.

Transport & Logistics

Thornhill Park
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2034
Source / Links: Link 1   Link 2  

Thornhill Park is an expansive masterplanned community in Melbournes west, spanning 125 hectares. The project features approximately 3,000 homes, a dedicated primary school (opened 2023), and significant environmental infrastructure including a large-scale constructed wetland for stormwater treatment. Future planning includes the Thornhill Park Station and integrated retail precincts to support a population exceeding 7,000 residents.

Communities, Precincts & Urban Renewal

Little Springs Estate
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   

Little Springs is a masterplanned residential community in Deanside comprising approximately 430 residential allotments bounded by 2 kilometres of Kororoit Creek frontage. The development includes dedicated wetlands, an integrated early learning childcare facility, and a commercial-retail convenience wing featuring a medical clinic, local cafe, and swim school. Civil construction and staged residential delivery are actively underway.

Communities, Precincts & Urban Renewal

Williams Walk
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

Williams Walk is a boutique masterplanned residential community delivered by Villawood Properties in Melbourne's western growth corridor. The project comprises approximately 180 home lots complemented by internal linear reserves, walking trails, and integrated landscape design close to Rockbank railway station. Site civil works and staged residential building construction are actively progressing across multiple delivery phases.

Communities, Precincts & Urban Renewal

Woodlea Estate
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2035
Source / Links: Link 1   Link 2  

Woodlea is a 711-hectare greenfield masterplanned community in Aintree and Bonnie Brook, around 29km west of Melbourne's CBD within the City of Melton. Delivered in partnership by Mirvac and Victoria Investments & Properties (VIP), it is planned to comprise approximately 7,000 dwellings housing close to 20,000 residents at full build-out, with more than 16,000 residents already living on site. About 30 percent of the footprint is dedicated to open space across more than 16 parks, including an adventure precinct, dog park, skatepark and a 10-hectare active open space precinct with two soccer fields and a sports pavilion.The community is anchored by the Coles-anchored Woodlea Town Centre (opened 2021) and supports several schools, including Aintree Primary, Bacchus Marsh Grammar, Yarrabing Secondary College and Dharra Specialist School, with a new state primary school and kindergarten north of Taylors Road due to open in 2027. A third and final display village of 38 homes across 17 builders launched in February 2025. The Aintree Major Town Centre Urban Design Framework (formerly Rockbank North MTC) was adopted by Melton City Council on 22 September 2025, providing for around 1,420 dwellings, 36,000 square metres of retail floor space and over 6,400 jobs in its ultimate form. Construction is staged through to the early 2030s.

Communities, Precincts & Urban Renewal

Frontier Avenue Education Centre & Commercial Development
Category: Education & Training
Stage: Approved | Est. Comp: 2027
Source / Links: Link 1   

Approved commercial development application (PA2503796) authorising the use and development of land for an education centre, commercial office spaces, outbuildings, car parking facilities, and business identification signage on Frontier Avenue in Aintree.

Education & Training

Atlas Rockbank
Category: Residential Development
Stage: Construction | Est. Comp: 2026

Atlas Rockbank is an 11.5-hectare masterplanned residential estate delivering 167 land lots within the City of Melton's Western Growth Corridor. Developed by Koham Property Group, the project features architecturally designed homes, integrated open green spaces, and direct connectivity to the upgraded Rockbank Train Station and Western Freeway.

Residential Development

Woodlea Master-Planned Community
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2032
Source / Links: Link 1   Link 2  

Woodlea is a 711-hectare greenfield masterplanned community located 29km west of Melbourne's CBD across Aintree and Bonnie Brook in the City of Melton. Developed by Mirvac in joint venture with Victoria Investments and Properties (VIP), the project is set to deliver around 7,000 lots and house approximately 20,000 to 25,000 residents at completion. As of late 2025 the community was home to over 16,000 residents, with momentum continuing into 2026. Recent and upcoming milestones include the new Sales and Experience Centre and 38-home Display Village at 11 Recreation Road launched in 2025, the Aintree Active Open Space precinct featuring skate park, sporting pavilion, soccer fields, dog park and all-abilities playground, and the Aintree Town Centre anchored by Coles.Established schools include Aintree Primary School, Bacchus Marsh Grammar (with secondary expansion to Year 12 by 2026), Yarrabing Secondary College (expanding to Year 9 in term 1 2026) and Dharra Specialist School. A new Aintree North Primary School is funded for opening in term 1 2027 with construction starting late 2025, alongside an additional kindergarten. Other works progressing include a new VICSES emergency services hub, a relocated Riding for the Disabled Association of Victoria centre opening in early 2026, a future second council community centre, additional childcare and a planned major town centre incorporating medical facilities. Around 30 percent of the site is dedicated to open space across more than 20 parks.

Communities, Precincts & Urban Renewal

Jobs & IndustryEmployment Trends in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

14,925 residents of Rockbank - Mount Cottrell are employed, from a labour force of 15,806. Unemployment sits at 5.6%, with participation at 58.1%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.6% nationally over five years. That reflects industry composition only and makes no allowance for local population growth, so in an area growing as fast as this one it understates the likely rise in local jobs. The working-day population is estimated at 45,635, about 115% of the resident population, so the area draws in more workers than it sends out. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

The local labour pool in Rockbank - Mount Cottrell is highly educated across varied industries, recording an unemployment rate of 5.6% and a 0.6% rise in estimated jobs over the past year. As of March 2026, employed residents total 14,925, while the jobless rate sits 0.8% above the 4.8% seen in Greater Melbourne, with local participation at 58.1% trailing the metro figure of 70.1%. At the time of the Census, a modest 23.5% of workers operated from home, though this metric was influenced by Covid-19 restrictions. Key fields of employment for residents include health care & social assistance, transport, postal & warehousing, and construction.

The community displays notable concentration in transport, postal & warehousing, capturing an employment share 2.5 times that of the regional average. Conversely, professional & technical roles are underrepresented, engaging just 6.7% of Rockbank - Mount Cottrell's working population compared to 10.1% across Greater Melbourne. A Census ratio of 0.7 workers for each resident points to a comparatively solid supply of local jobs. AreaSearch's evaluation of ABS and SALM figures indicates that over the 12-month period, employment rose by 0.6% while the labour force grew by 1.9%, causing local unemployment to climb by 1.3 percentage points. Over the same timeframe, Greater Melbourne experienced a 2.1% lift in employment, a 2.3% expansion in the labour pool, and a 0.2 percentage points increase in unemployment. Further forward-looking perspectives come from Jobs and Skills Australia's national employment projections from Mar-26, which examine five- and ten-year horizons against the local industry baseline. Nationally, overall employment is expected to rise by 6.6% over five years and 13.7% over ten years, with wide variance across individual sectors. Applying these sectoral trajectories to the industry distribution of Rockbank - Mount Cottrell projects local job growth of 6.6% over five years and 13.6% over ten years (note that this represents a simple weighted extrapolation for comparative purposes and excludes localized population models).

Frequently Asked Questions - Employment

What is the employment situation in the Rockbank - Mount Cottrell SA2?
As of March 2026, the Rockbank - Mount Cottrell SA2 has approximately 14,925 employed residents with an unemployment rate of 5.6%. The unemployment rate is moderate, indicating some available workforce capacity. The area faces employment challenges compared to other regions nationally.
How does the Rockbank - Mount Cottrell SA2's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the Rockbank - Mount Cottrell SA2 stands at 5.6%, which is 0.8 percentage points above Greater Melbourne's rate of 4.8%. This higher unemployment rate may indicate local labour market challenges. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the Rockbank - Mount Cottrell SA2?
The employment landscape in the Rockbank - Mount Cottrell SA2 is dominated by several key sectors. The largest employers are health care & social assistance (15.9% of employment), transport, postal & warehousing (13.2%), and construction (11.4%). Other significant employers include retail trade and professional & technical.
How has employment changed recently in the Rockbank - Mount Cottrell SA2?
Over the past year to March 2026, the Rockbank - Mount Cottrell SA2 has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has rise. By comparison, Greater Melbourne saw employment increased and its unemployment rate rose.
What is the workforce participation rate in the Rockbank - Mount Cottrell SA2?
The workforce participation rate in the Rockbank - Mount Cottrell SA2 is 58.1%, which represents the proportion of working-age residents who are either employed or actively seeking work. This moderate participation rate suggests some residents may face barriers to workforce entry. The local rate trailing the Greater Melbourne average of 70.1%, suggesting potential for increased workforce participation.
Which industries are over-represented in the Rockbank - Mount Cottrell SA2's employment market?
The rockbank - mount cottrell sa2 shows notable specialization in transport, postal & warehousing, which employs 13.2% of the local workforce compared to 5.2% regionally. With a local vs regional employment ratio of 2.5, this represents a significant industry cluster that likely serves markets beyond the local area.
What are the employment growth prospects for the Rockbank - Mount Cottrell SA2?
Based on Jobs and Skills Australia projections applied to the Rockbank - Mount Cottrell SA2's industry mix, employment is expected to grow by 6.6% over the next five years and 13.6% over ten years. This compares to national growth expectations of 6.6% over five years. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the Rockbank - Mount Cottrell SA2 compare nationally?
The rockbank - mount cottrell sa2's employment market shows weaker performance compared to most areas nationally. This suggests the need for targeted economic development initiatives. Recent job advertisement trends show the broader employment region saw a 8.9% decline, ranking 34.0th out of 37 regions nationally.
What employment opportunities exist for skilled workers in the Rockbank - Mount Cottrell SA2?
Skilled workers will find good opportunities in the Rockbank - Mount Cottrell SA2, with skilled sectors accounting for 35.3% of employment. Key sectors for skilled workers include health care & social assistance (15.9%), professional & technical (6.7%), and education & training (5.8%). With projected employment growth of 6.6% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

Median household income in Rockbank - Mount Cottrell is $2,123 a week (about $110,000 a year), with median personal income at $946 a week. ATO records put median taxable income at $55,864 a year against an average of $63,076. Household income is from the 2021 Census; taxable income is from ATO Taxation Statistics for the latest financial year available, indexed forward using the ABS Wage Price Index.

Detail

Data from the ATO at the postcode level for financial year 2023 compiled by AreaSearch indicates that earnings in the Rockbank - Mount Cottrell SA2 sit below the Australian benchmark, recording a median of $55,864 and an average of $63,076. These figures contrast with Greater Melbourne's median of $57,688 and average of $75,164. Factoring in Wage Price Index growth of 9.62% since financial year 2023 yields updated estimates of approximately $61,238 for median earnings and $69,144 for average income as of March 2026. The 2021 Census placed local personal, family, and household earnings near the national 73rd percentile.

In terms of individual wage distribution, the largest cohort accounts for 46.4% of residents (18,440 people) earning in the $1,500 - 2,999 bracket, similar to the broader metropolitan distribution where 32.8% fall in this band. Residential housing costs absorb 19.1% of income; nevertheless, healthy wages sustain disposable income at the 68th percentile, with the district positioned in the 5th decile on the SEIFA income index.

Frequently Asked Questions - Income

What is the median taxable income in the Rockbank - Mount Cottrell SA2?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Rockbank - Mount Cottrell SA2 is approximately $61,238. The official ATO data from FY-23 recorded a median of $55,864.
What is the average taxable income in the Rockbank - Mount Cottrell SA2?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Rockbank - Mount Cottrell SA2 is approximately $69,144. The official ATO data from FY-23 recorded an average of $63,076.
How does the median taxable income in the Rockbank - Mount Cottrell SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Rockbank - Mount Cottrell SA2 is approximately $61,238 compared to $63,238 in Greater Melbourne. The official ATO data from FY-23 shows $55,864 and $57,688 respectively.
How does the average taxable income in the Rockbank - Mount Cottrell SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Rockbank - Mount Cottrell SA2 is approximately $69,144 compared to $82,395 in Greater Melbourne. The official ATO data from FY-23 shows $63,076 and $75,164 respectively.
What are the main income cohorts in the Rockbank - Mount Cottrell SA2 according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~46.4% / 18,440 persons) of the Rockbank - Mount Cottrell SA2's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the Rockbank - Mount Cottrell SA2 compare to the region?
The largest income cohort in the Rockbank - Mount Cottrell SA2 is the $1,500 - 2,999 group, representing about 46.4% of the population. In comparison, Greater Melbourne's largest income cohort is the $1,500 - 2,999 group, representing 32.8% of its population, according to the 2021 Census.
What is the median household income in the Rockbank - Mount Cottrell SA2 according to the 2021 Census?
The 2021 Census data indicates that the median household income in the Rockbank - Mount Cottrell SA2 is $2,123/wk.
What is the median family income in the Rockbank - Mount Cottrell SA2 according to the 2021 Census?
According to the 2021 Census, the median family income in the Rockbank - Mount Cottrell SA2 is $2,191/wk.
What is the median personal income in the Rockbank - Mount Cottrell SA2 according to the 2021 Census?
The 2021 Census shows that the median personal income in the Rockbank - Mount Cottrell SA2 is $946/wk.
How does the Rockbank - Mount Cottrell SA2's income rank nationally?
According to AreaSearch's aggregation of the latest postcode level ATO data released for FY-23, the Rockbank - Mount Cottrell SA2 had a median income among taxpayers of $55,864 with the average level standing at $63,076. This is below the national average and compares to levels of $57,688 and $75,164 across Greater Melbourne respectively. Based on Wage Price Index growth of 9.62% since FY-23, current estimates would be approximately $61,238 (median) and $69,144 (average) as of March 2026.
What is the disposable income in the Rockbank - Mount Cottrell SA2?
The estimated disposable income in the Rockbank - Mount Cottrell SA2 is $7,438 per year according to AreaSearch analysis.
How does the Rockbank - Mount Cottrell SA2's disposable income compare to the region?
The rockbank - mount cottrell sa2's disposable income is $7,438 compared to $6,948 for Greater Melbourne, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

Rockbank - Mount Cottrell had 4,586 occupied dwellings at the 2021 Census, 96% detached houses and 0% apartments. 66% are owned with a mortgage, 25% rented and 9% owned outright. At that Census the median rent was $400 a week and the median mortgage repayment $2,017 a month, a total housing cost higher than 93% of areas nationally. Rent absorbs 18.8% of household income here and mortgage repayments 21.9%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

According to the latest Census, separate houses made up 96.3% of the housing stock in Rockbank - Mount Cottrell, with attached dwellings and apartments ('other' dwellings) accounting for 3.8%, compared to 67.9% separate houses and 32.1% other dwellings across Melbourne metro. Outright property ownership in Rockbank - Mount Cottrell was relatively low at 9.2%, while 66.3% of dwellings were being purchased with a mortgage and 24.5% were occupied by renters. Median monthly mortgage payments stood at $2,017, exceeding Melbourne metro's $2,000, while median weekly rent was $400 compared to $390 across the metropolitan area.

Nationally, Rockbank - Mount Cottrell's mortgage costs exceed the Australian baseline of $1,863, and typical rents surpass the nationwide average of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the Rockbank - Mount Cottrell SA2?
In the Rockbank - Mount Cottrell SA2, 9.2% of homes are owned outright, 66.3% are owned with a mortgage, and 24.5% are rented.
What percentage of dwellings in the Rockbank - Mount Cottrell SA2 are houses?
According to the latest data, 96.3% of dwellings in the Rockbank - Mount Cottrell SA2 are houses.
What percentage of dwellings in the Rockbank - Mount Cottrell SA2 are apartments or units?
In the Rockbank - Mount Cottrell SA2, 0.1% of dwellings are apartments or units, with an additional 1.3% being semi-detached dwellings.
What is the level of outright home ownership in the Rockbank - Mount Cottrell SA2?
Outright home ownership in the Rockbank - Mount Cottrell SA2 stands at 9.2%, compared to 30.7% in Greater Melbourne.
What is the median monthly mortgage repayment in the Rockbank - Mount Cottrell SA2?
The median monthly mortgage repayment in the Rockbank - Mount Cottrell SA2 is $2,017, compared to $2,000 in Greater Melbourne.
What is the median weekly rent in the Rockbank - Mount Cottrell SA2?
The median weekly rent in the Rockbank - Mount Cottrell SA2 is $400, compared to $390 in Greater Melbourne.
What is the distribution of rental prices in the Rockbank - Mount Cottrell SA2?
In the Rockbank - Mount Cottrell SA2, 0.8% of rentals are $0-149/week, 17.4% are $150-349/week, 80.9% are $350-649/week, 0.9% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the Rockbank - Mount Cottrell SA2?
The aggregate monthly housing cost in the Rockbank - Mount Cottrell SA2 is $1,761, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the Rockbank - Mount Cottrell SA2?
In the Rockbank - Mount Cottrell SA2, households with mortgages typically spend 21.9% of their income on mortgage repayments, while renters spend 18.8% of their income on rent.
How crowded are homes in the Rockbank - Mount Cottrell SA2?
The average persons per bedroom ratio in the Rockbank - Mount Cottrell SA2 is 0.8, indicating the level of household density.
How does housing affordability in the Rockbank - Mount Cottrell SA2 compare to the region?
Housing affordability in the Rockbank - Mount Cottrell SA2 shows mortgage holders spending 21.9% of income on repayments (vs 24.3% regionally), while renters spend 18.8% of income on rent (vs 20.5% regionally).
What types of dwellings are most common in the Rockbank - Mount Cottrell SA2?
The dwelling mix in the Rockbank - Mount Cottrell SA2 consists of 96.3% detached houses, 1.3% semi-detached dwellings, 0.1% apartments, and 2.4% other dwelling types.
What is the weighted average housing cost based on tenure mix in the Rockbank - Mount Cottrell SA2?
Considering the housing occupancy patterns, the weighted average monthly housing cost is approximately $1,762. This accounts for outright owners paying no housing costs, mortgage holders paying $2,017/month, and renters paying $1,732/month.
How affordable is housing in the Rockbank - Mount Cottrell SA2 relative to local incomes?
Housing in Rockbank - Mount Cottrell consumes approximately 19.2% of median household income ($9,193 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
How do proposed developments compare to existing housing types in the Rockbank - Mount Cottrell SA2?
Recent development applications in Rockbank - Mount Cottrell show attached dwellings contributing 13% of approvals compared to 4% of existing stock, while detached houses represent 87% of applications versus 96% of current dwellings. This suggests increasing densification. Density increases remain below national trends.

HouseholdsHousehold Composition in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

Rockbank - Mount Cottrell counted 4,586 households at the 2021 Census, an estimated 10,383 today, averaging 3.2 people each. 54% are couples with children, more than in 96% of areas nationally, against 21% couples without children. 14% of households are people living alone, and families average 1.4 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Families constitute the vast majority of local households at 84.3%, broken down into couples with children (53.5%), couples without children (20.8%), and single parent families (8.9%). Non-family living arrangements make up the remaining 15.7%, comprising single-person households at 13.6% and group living situations at 2.1%. The area's median household size of 3.2 people surpasses the Greater Melbourne standard of 2.6.

Frequently Asked Questions - Households

How many households are in the Rockbank - Mount Cottrell SA2?
As of the 2021 Census, the Rockbank - Mount Cottrell SA2 had 4,586 households. Based on population growth patterns, this has grown by approximately 126.4% to an estimated 10,383 households today.
What is the typical household size?
The median household size in the Rockbank - Mount Cottrell SA2 is 3.2 people. This compares to 2.6 in Greater Melbourne and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 84.3% of all households. The remaining households consist of lone person households (13.6%), group households (2.1%), and other household types (0.0%).
How are families structured in the area?
Among the 3,865 family households, 53.5% are couples with children, 20.8% are couples without children at home, and 8.9% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the Rockbank - Mount Cottrell SA2 compare to regional household patterns?
Compared to Greater Melbourne, the Rockbank - Mount Cottrell SA2 shows distinct household patterns. Family households are notably over-represented at 84.3% (versus 70.9% regionally). Conversely, lone person households are under-represented at 13.6% compared to the regional 24.8%. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the Rockbank - Mount Cottrell SA2 have an average of 1.4 children, matching the Greater Melbourne average of 1.4. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the Rockbank - Mount Cottrell SA2?
Marriage patterns reveal 53.9% of the adult population are currently married, while 36.9% have never married. This compares to 47.0% married and 38.0% never married across Greater Melbourne.
How significant are single-person households?
Single-person households represent 13.6% of all households in the Rockbank - Mount Cottrell SA2, notably lower than the regional average of 24.8%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 2.1% of households, well below the Greater Melbourne average of 4.3%. This low rate suggests limited student or young professional shared accommodation.
Loading household composition data...

EducationSchools & Education in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

34.7% of adults in Rockbank - Mount Cottrell hold a university qualification, including 22.4% with a bachelor degree and 9.9% with postgraduate qualifications. A further 15.3% hold a vocational qualification. 8 schools serve the area, with 2,473 enrolment places and an average ICSEA of 1,031 against a national benchmark of 1,000. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.

Detail

Tertiary qualification rates in Rockbank - Mount Cottrell are well above broader averages, with 34.7% of the population aged 15+ holding a higher education degree compared to 24.3% across the SA3 area, providing a strong base for professional and technical sectors. Bachelor degrees represent the largest group at 22.4%, alongside postgraduate degrees at 9.9% and graduate diplomas at 2.4%. Vocational and technical qualifications are also widely held, with 27.9% of residents aged 15+ possessing trade credentials, including advanced diplomas (12.6%) and certificates (15.3%). A substantial proportion of the population is actively engaged in study, with 42.1% of residents enrolled in an educational institution.

This comprises 16.6% attending primary school, 7.4% in secondary education, and 5.8% enrolled in tertiary courses.

Frequently Asked Questions - Education

What percentage of people in the Rockbank - Mount Cottrell SA2 have university qualifications?
34.7% of people aged 15 and over in the Rockbank - Mount Cottrell SA2 have university qualifications, compared to 37.0% in the broader region.
What percentage of people in the Rockbank - Mount Cottrell SA2 have no formal qualifications?
37.5% of people aged 15 and over in the Rockbank - Mount Cottrell SA2 have no formal qualifications, compared to 35.2% regionally.
How does the Rockbank - Mount Cottrell SA2's education level compare to national averages?
The rockbank - mount cottrell sa2 ranks in the 73th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the Rockbank - Mount Cottrell SA2?
The most common qualifications in the Rockbank - Mount Cottrell SA2 are: Bachelor Degree (22.4%), Certificate (15.3%), Advanced Diploma (12.6%).
What proportion of the Rockbank - Mount Cottrell SA2's population is currently attending educational institutions?
42.1% of the population in the Rockbank - Mount Cottrell SA2 is currently engaged in formal education, with 16.6% in primary school, 7.4% in secondary school, 5.8% at university.
What is the ICSEA score for schools in the Rockbank - Mount Cottrell SA2?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the Rockbank - Mount Cottrell SA2 is 1031, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the Rockbank - Mount Cottrell SA2?
There are 8 schools within the Rockbank - Mount Cottrell SA2, with a combined enrollment of approximately 2,473 students.
What types of schools are available in the Rockbank - Mount Cottrell SA2?
The rockbank - mount cottrell sa2 includes 5 primary schools, 1 secondary school, 2 combined schools.

Schools Detail

AmenitiesServices & Amenities in Rockbank - Mount Cottrell

PROFILE FAQ
Explore the surrounds Search this catchment for any place type — schools, cafés, supermarkets, transport — and drop your own custom points on the map.
Open

Getting AroundTransport & Commuting in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

Public transport in Rockbank - Mount Cottrell reaches 44 stops on 14 routes, timetabled for about 4,200 services a week. The typical home sits about 1,030 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.6 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.

Detail

Public transport services in Rockbank - Mount Cottrell comprise 44 operational stops combining both rail and bus facilities. These locations are served by 14 routes that together deliver 4,220 weekly passenger trips. Overall public transport access remains limited, with the typical resident situated 1034 meters from the nearest stop. The outward daily commute reflects the suburban character of the area, with 88% of travel undertaken by car and 8% by train. Average private motor vehicle ownership is 1.6 per dwelling, higher than the metropolitan standard. At the 2021 Census, 23.5% of employed residents worked from home, a metric likely influenced by pandemic measures.

Across the entire network, transport schedules provide an average of 602 trips per day, which translates to roughly 95 weekly trips for each individual stop.

Frequently Asked Questions - Transport

How many public transport stops are in Rockbank - Mount Cottrell?
There are 44 public transport stops within the Rockbank - Mount Cottrell SA2.
How frequent are the transport services in Rockbank - Mount Cottrell?
the Rockbank - Mount Cottrell SA2 has 4,220 weekly trips across 14 routes, averaging 602 trips per day.
How far are residents from public transport in Rockbank - Mount Cottrell?
On average, residential properties are 1034 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

84.6% of residents in Rockbank - Mount Cottrell report no long-term health condition, a healthier profile than 97% of areas nationally. 2.4% need daily assistance with core activities, and 50.4% hold private health cover. The standardised death rate runs at 3.2 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

According to AreaSearch's analysis of mortality figures and illness rates, Rockbank - Mount Cottrell demonstrates exceptionally positive health outcomes, marked by very low rates of common chronic illnesses across all age cohorts. Private health insurance uptake is comparatively low, covering approximately 50% of the population (~20,030 people), compared with 56.7% across Greater Melbourne and a national benchmark of 55.7%. Asthma and mental health conditions are the most prevalent health issues in the area, affecting 6.0 and 4.0% of residents, respectively, whereas 84.6% of residents indicated no long-term medical conditions, outpacing Greater Melbourne's 72.6%.

Residents aged 65 and over make up 4.1% of the local population (1,629 people), notably beneath the 15.1% metropolitan benchmark. While health outcomes for older residents are very favorable, their comparative national ranking sits somewhat below that of the wider community.

Frequently Asked Questions - Health

How many people in the Rockbank - Mount Cottrell SA2 have private health insurance?
Around 50.4% of people in the Rockbank - Mount Cottrell SA2 are covered by private health insurance, which compares to 56.7% in the broader region of Greater Melbourne.
What percentage of the population requires ongoing medical assistance in the Rockbank - Mount Cottrell SA2?
In the Rockbank - Mount Cottrell SA2, 2.4% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 5.5% of people in Greater Melbourne require similar assistance.
How prevalent is asthma in the Rockbank - Mount Cottrell SA2?
6.0% of people in the Rockbank - Mount Cottrell SA2 are diagnosed with asthma. In comparison, 7.3% of the population across Greater Melbourne is affected by asthma.
What percentage of people have diabetes in the Rockbank - Mount Cottrell SA2?
Diabetes affects 3.2% of the the Rockbank - Mount Cottrell SA2 population, while in the surrounding region, 4.1% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the Rockbank - Mount Cottrell SA2?
1.3% of people in the Rockbank - Mount Cottrell SA2 have heart disease. Across the region of Greater Melbourne, 3.1% of the population is affected by heart disease.
How does the Rockbank - Mount Cottrell SA2 compare to the region in terms of overall private health coverage?
In the Rockbank - Mount Cottrell SA2, 50.4% of the population are estimated to have private health insurance. Comparatively, Greater Melbourne sees an estimated private health coverage rate of 56.7%.

Ancestry & LanguageCultural Diversity in Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

48.1% of Rockbank - Mount Cottrell residents were born overseas and 62.6% speak a language other than English at home, more culturally diverse than 92% of areas nationally. The largest reported ancestries are Indian (15.9%) and Australian (10.6%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Rockbank - Mount Cottrell ranks among Australia's most culturally diverse communities, with 48.1% of residents born abroad and 62.6% using a language other than English in the home. Christianity represents the leading religious affiliation, accounting for 39.5% of the local populace. The area also shows a significant representation in Other religions, covering 17.4% of residents compared to only 2.3% throughout Greater Melbourne. Looking at ancestral background based on parental birthplace, the three largest groups in Rockbank - Mount Cottrell are Other at 31.5% (well above the regional 14.6%), Indian at 15.9% (considerably higher than the 4.2% regional average), and Australian at 10.6% (lower than the 18.4% regional proportion).

Other distinct cultural groups show pronounced local shares: Filipino background represents 6.4% (compared to 1.3% across the region), Maltese stands at 4.2% (vs 1.1%), and Samoan accounts for 1.2% (vs 0.3%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the Rockbank - Mount Cottrell SA2?
Rockbank - Mount Cottrell is among the most culturally diverse areas in the country, with 48.1% of its population born overseas and 62.6% speaking a language other than English at home.
What is the most common religion in the Rockbank - Mount Cottrell SA2?
The main religion in Rockbank - Mount Cottrell was found to be Christianity, which makes up 39.5% of people in Rockbank - Mount Cottrell. However, the most apparent overrepresentation was in Other, which comprises 17.4% of the population, substantially higher than the Greater Melbourne average of 2.3%.
What are the top countries of origin in the Rockbank - Mount Cottrell SA2?
In terms of ancestry (country of birth of parents), the top three represented groups in Rockbank - Mount Cottrell are Other, comprising 31.5% of the population, which is substantially higher than the regional average of 14.6%, Indian, comprising 15.9% of the population, which is substantially higher than the regional average of 4.2%, and Australian, comprising 10.6% of the population, which is notably lower than the regional average of 18.4%. Additionally, there are notable divergences in the representation of certain other ethnic groups: Filipino is notably overrepresented at 6.4% of Rockbank - Mount Cottrell (vs 1.3% regionally), Maltese at 4.2% (vs 1.1%) and Samoan at 1.2% (vs 0.3%).
How does the percentage of people born overseas compare to the regional average?
48.1% of the the Rockbank - Mount Cottrell SA2 population was born overseas, compared to 37.3% regionally.
What percentage of the the Rockbank - Mount Cottrell SA2 population speaks a language other than English at home?
62.6% of the population in the Rockbank - Mount Cottrell SA2 speaks a language other than English at home, compared to 35.9% in the wider region.
How many people in the Rockbank - Mount Cottrell SA2 identify as Australian Aboriginal?
0.4% of the the Rockbank - Mount Cottrell SA2 population identifies as Australian Aboriginal, compared to 0.5% in the region.
What is the citizenship status of the population in the Rockbank - Mount Cottrell SA2?
63.2% of the the Rockbank - Mount Cottrell SA2 population holds citizenship, compared to 81.1% in the wider region.

Age StructureAge Profile of Rockbank - Mount Cottrell

Table Chart PROFILE FAQ

The median resident of Rockbank - Mount Cottrell is 32, younger than 95% of areas nationally. That is 1 year older than at the 2021 Census. 30.0% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.

Detail

Rockbank - Mount Cottrell is characterized by a strong presence of young family households and working-age residents. As of August 2026, AreaSearch estimates indicate that 45.0% of the population falls into the 25 - 44 age bracket, compared to 32.1% in Greater Melbourne, while seniors aged 65+ comprise just 4.1% locally versus 15.1% across the metropolitan area. The median age is estimated at 32 as at August 2026, having risen from 31 at the 2021 Census, remaining 5 years younger than the Greater Melbourne median of 37 and below the national median of 38 recorded at that Census.

The share of 25 - 44 year olds has moderated from 48.3% at the Census to an estimated 45.0%. Projections to 2041 indicate that the largest absolute increase will occur in the 0 - 24 youth age cohort, gaining 18,470 residents (125%) to reach 33,223, while the 45 - 64 age group will see the fastest rate of expansion, surging 216% to 17,252 residents.

Frequently Asked Questions - Age

What is the median age in the Rockbank - Mount Cottrell SA2?
AreaSearch estimates the median age in the Rockbank - Mount Cottrell SA2 at 32 years as at August 2026. That is up from the 2021 Census figure of 31 years, with AreaSearch updating the age profile for population change recorded since the Census.
How does the Rockbank - Mount Cottrell SA2's median age compare to broader areas?
At an estimated 32 years as at August 2026, Rockbank - Mount Cottrell is 5 years younger than the Greater Melbourne 2021 Census average (37 years) and 6 years younger than the national Census average (38 years).
What age groups are over-represented in the Rockbank - Mount Cottrell SA2?
On AreaSearch estimates updated to August 2026, the most over-represented age group in the Rockbank - Mount Cottrell SA2 compared to the Greater Melbourne region is the 35 - 44 group, making up 24.7% of the population.
What age groups are under-represented in the Rockbank - Mount Cottrell SA2?
On AreaSearch estimates updated to August 2026, the most under-represented age group in the Rockbank - Mount Cottrell SA2 compared to the Greater Melbourne region is the 55 - 64 group, making up 4.4% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the Rockbank - Mount Cottrell SA2 show significant variance compared to the Greater Melbourne region. The most over-represented age groups are 0-4 year-olds (10.7% vs 5.6%) and 35-44 year-olds (24.7% vs 15.7%). The most under-represented age groups are 75-84 year-olds (0.9% vs 5.2%) and 85+ year-olds (0.4% vs 2.1%).
What is the percentage of children (0-14 years) in the Rockbank - Mount Cottrell SA2?
AreaSearch estimates children aged 0-14 years at 27.5% of the population in the Rockbank - Mount Cottrell SA2 as at August 2026.
What is the percentage of older people (65+ years) in the Rockbank - Mount Cottrell SA2?
AreaSearch estimates people aged 65 and over at 4.1% of the population in the Rockbank - Mount Cottrell SA2 as at August 2026.

Data & MethodBoundaries, Sources & Method for Rockbank - Mount Cottrell

Data currency Refreshed

9 of 14 data sections on this page were updated within the last 12 months — the newest current to Sep 2026.

Everything is aggregated to the SA2 boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.

The ledger — source, cycle and currency by section

Section Source & update cycle Currency
Updated within the last 12 months 9 sections
Population ABS, GNAF, Geoscience Australia Annual (ABS ERP) Aug 2026 last month headline measures · 2021 Census baseline
Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to Aug 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual Aug 2026 last month headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to Aug 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Aug 2026 last month headline measures · Jul 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Sep 2026 this month all 21 measures
Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Sep 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Sep 2026 this month all 61 projects tracked here
Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated Sep 2026.
Employment ABS, DEWR, JSA Quarterly (ABS SALM) Mar 2026 6 months ago headline measures · 2021 Census baseline
Unemployment and labour force from ABS Small Area Labour Markets, current to Mar 2026. The growth outlook applies Department of Employment (now Jobs and Skills Australia) forecasts for all 19 industry divisions to the local industry mix, so it measures sector composition rather than local expansion and makes no allowance for population growth. Job demand comes from the same agency via its Internet Vacancy Index; industry and occupation structure from the 2021 Census.
Education ABS, ACARA Annual (ACARA) Aug 2026 last month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 2 months ago headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Jul 2026 2 months ago all 14 measures
Annual and financial-year sources 2 sections
Income ABS, ATO Annual (ATO) FY 2023 3 years ago headline measures · 2021 Census baseline
ATO taxable income statistics for FY 2023, indexed forward using the Wage Price Index. Census household income provides the distribution detail.
Health ABS, ATO Annual 2024 2 years ago headline measures · 2021 Census baseline
Census-measured — next update: 2026 Census 3 sections No more current small-area source exists for these, so they are labelled as Census-measured rather than implied to be current.
Housing ABS 5-yearly (Census) 2021 Census next update 2026 all 30 measures
Households ABS 5-yearly (Census) 2021 Census next update 2026 all 18 measures
Cultural diversity ABS, Geoscience Australia 5-yearly (Census) 2021 Census next update 2026 all 44 measures

"Currency" is the most recent release feeding that section. Where the Census supplies the structural baseline underneath a current headline figure, the row says so.

How the numbers are built

Population

The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 7,528 validated new addresses here. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (17,553 at the 2021 Census → 39,743 now). Annual growth rates are compound (CAGR), not simple averages.

Age profile

Cohort shares are not raw Census counts. Every cohort is held as a pair — the Census baseline and a current estimate — and the split is re-based using ERP and state population projections, current to Aug 2026. Median age is the Census median plus modelled change since. Charts that show both are labelled "2021 Census vs Current Estimate".

Property sales

Sourced from the state valuation authority's sales register — current, not Census, and refreshed weekly. Medians are calculated from settled transactions in the period shown; periods with very low transaction counts are flagged or suppressed, because a handful of sales can move a median substantially.

Rents

Derived from state rental bond lodgement data, by dwelling type and bedroom count. Bonds are lodged at the start of a new tenancy, so this reflects new lettings, not the whole rented stock.

Development & infrastructure

Building approvals come from current ABS releases; development applications are collected from council and state planning portals; the infrastructure pipeline is compiled from Infrastructure Australia and local government sources. Applications are matched to this boundary by address or coordinates, so very recent lodgements may not yet appear.

Employment & income

Industry and occupation structure comes from the Census, but the headline labour-market indicators do not. Unemployment and labour force are derived from ABS Small Area Labour Markets (quarterly). The employment outlook applies Department of Employment forecasts for all 19 industry divisions to this area's own industry mix (the agency is now Jobs and Skills Australia), as does the Internet Vacancy Index used for job demand. Because it is weighted on industry composition alone, that outlook carries no allowance for local population growth — in fast-growing areas the real rise in local jobs will typically be higher. Income combines Census household income with ATO taxable-income statistics for FY 2023, indexed forward using the Wage Price Index.

Education, transport & amenities

School enrolments, ICSEA and performance come from ACARA's current release, not the Census. Public transport stops and service frequency are derived from GTFS timetable feeds published by state transport departments. Services and amenities are proximity and count scores built from provider directories, refreshed on their own cycle. The Census contributes only the travel-to-work and qualification measures.

Rankings and benchmarks. Where we rank this area, the comparison set is every area of the same boundary type — suburbs against suburbs, SA2s against SA2s. Benchmarks compare this area against its greater capital city region and the national figure for the same measure and period.

Limits worth knowing. Small areas carry larger error margins, and the ABS introduces small random adjustments to Census counts to protect confidentiality — so totals may not sum exactly. Estimates re-based from regional data describe the area's expected trajectory, not a direct count of it. Figures are indicative for research and are not financial, planning or valuation advice.

Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (213041359). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

Why can the Rockbank - Mount Cottrell SA2 boundary differ from the suburb boundary?
This page uses ABS Statistical Area Level 2 (SA2) boundaries for statistical reporting (e.g., census and ERP). SA2 areas can differ materially from Suburbs and Localities (SAL) boundaries, even when they share similar names, because they are defined for different purposes and often use different geographic boundaries.
Where does the data on this Rockbank - Mount Cottrell page come from?
AreaSearch compiles this page from official and industry sources — including ABS, Geoscience Australia, Valuer General, Provider directories, DEWR, JSA, State Transport Departments and ACARA — then aggregates them to the boundary shown and calculates the rankings, growth rates and benchmarks itself. Property sales come from the state valuation authority, rents from state rental bond lodgements, development applications from council and state planning portals, school data from ACARA, and public transport from state transport departments.
Is the Rockbank - Mount Cottrell data on this page just from the 2021 Census?
No. Most of this page is maintained well beyond the Census. Sourced entirely from current releases: development & approvals (Aug 2026), property sales & rents (Sep 2026), infrastructure projects (Sep 2026) and services & amenities (Jul 2026). Built on a Census baseline but carrying newer measures on top: population (to Aug 2026), age profile (to Aug 2026), employment (to Mar 2026), income (to FY 2023), education (to Aug 2026), transport (to Jul 2026) and health (to 2024). Population and age cohorts in particular are re-based to the latest ABS Estimated Resident Population rather than left at 2021 counts. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.

Nearby Areas