Rockbank - Mount Cottrell

Rockbank - Mount Cottrell lies within the top 10% of areas nationally in terms of population growth performance according to AreaSearch analysis of short and medium-term trends

Based on AreaSearch's analysis, Rockbank - Mount Cottrell's population is around 40,385 as of Feb 2026. This reflects an increase of 22,832 people (130.1%) since the 2021 Census, which reported a population of 17,553 people. The change is inferred from the estimated resident population of 32,872 from the ABS as of June 2024 and an additional 7,169 validated new addresses since the Census date. This population level equates to a density ratio of 321 persons per square kilometer, providing significant space per person and potential room for further development. Rockbank - Mount Cottrell's 130.1% growth since the 2021 census exceeded the national average (9.9%) and the state average, marking it as a growth leader in the region. Population growth for the area was primarily driven by interstate migration, which contributed approximately 84.8% of overall population gains during recent periods, although all drivers, including natural growth and overseas migration, were positive factors.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, AreaSearch is utilising the VIC State Government's Regional/LGA projections released in 2023, with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Growth rates by age group from these aggregations are also applied across all areas for years 2032 to 2041. Considering the projected demographic shifts, exceptional growth, placing it in the top 10 percent of national areas, is predicted over the period, with the area expected to increase by 59,698 persons by 2041 based on the latest annual ERP population numbers, reflecting a gain of 125.5% in total over the 17 years.

The level of residential development activity in Rockbank - Mount Cottrell was found to be higher than 90% of real estate markets across the country

Rockbank - Mount Cottrell has seen around 1,916 new homes approved each year, with 9,584 homes approved over the past 5 financial years (between FY-21 and FY-25) and 956 so far in FY-26. With an average of 2.2 people per year moving to the area per new home constructed over the past 5 financial years (between FY-21 and FY-25), suggesting solid demand that supports property values, new homes are being built at an average construction cost of $248,000—below the regional average—suggesting more affordable housing options for buyers. Additionally, $587.2 million in commercial approvals have been registered this financial year, indicating strong commercial development momentum.

Relative to Greater Melbourne, Rockbank - Mount Cottrell records 373.0% more development activity (per person), which should provide buyers with ample choice, though development activity has moderated in recent periods. This level is substantially higher than nationally, suggesting strong developer confidence in the location. New development consists of 90.0% detached dwellings and 10.0% attached dwellings, maintaining the area's traditional low density character with a focus on family homes appealing to those seeking space. At around 18 people per approval, Rockbank - Mount Cottrell reflects a developing area.

Looking ahead, Rockbank - Mount Cottrell is expected to grow by 50,702 residents through to 2041 (from the latest AreaSearch quarterly estimate). Based on current development patterns, new housing supply should readily meet demand, offering good conditions for buyers and potentially facilitating population growth beyond current projections.

Rockbank - Mount Cottrell has strong levels of nearby infrastructure activity, ranking in the top 40% nationally

Nothing can influence an area's performance as much as changes to local infrastructure, major projects, and planning initiatives. In total 170 projects have been identified by AreaSearch that are likely to have an impact on the area. Key projects include the Melton Line Upgrade, Thornhill Park, and Woodlea Estate, with the list below detailing those likely to be of most relevance.

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

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.

Employment conditions in Rockbank - Mount Cottrell remain below the national average according to AreaSearch analysis

Rockbank - Mount Cottrell has a well-educated workforce with diverse sector representation, an unemployment rate of 5.4%, and 3.2% estimated employment growth over the past year. As of December 2025, 15,047 residents are in work, while the unemployment rate is 0.6% above Greater Melbourne's rate of 4.8%, and workforce participation lags significantly (66.2% compared to Greater Melbourne's 71.3%). Based on Census responses, a moderate 23.5% of residents were found to work from home, though Covid-19 lockdown impacts should be considered.

Employment among residents is concentrated in health care & social assistance, transport, postal & warehousing, and construction. The area has a particular employment specialization in transport, postal & warehousing, with an employment share 2.5 times the regional level. Conversely, professional & technical services are under-represented, with only 6.7% of Rockbank - Mount Cottrell's workforce compared to 10.1% in Greater Melbourne. The ratio of 0.7 workers for each resident, as at the Census, indicates a level of local employment opportunities above the norm.

Based on AreaSearch analysis of SALM and ABS data, the 12-month period saw employment increase by 3.2% alongside a labour force increase of 5.1%, resulting in unemployment rising by 1.7 percentage points. By comparison, Greater Melbourne recorded employment growth of 2.4%, labour force growth of 2.8%, and unemployment rising 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 can offer further insight into potential future demand within Rockbank - Mount Cottrell. These projections, covering five and ten-year periods, have been mapped against the local employment profile to estimate growth patterns. While national employment is forecast to expand by 6.6% over five years and 13.7% over ten years, growth rates differ significantly between industry sectors. Applying these industry-specific projections to Rockbank - Mount Cottrell's employment mix suggests local employment should increase by 6.6% over five years and 13.6% over ten years (please note this is a simple weighting extrapolation for illustrative purposes and does not take into account localised population projections).

Income analysis reveals strong economic positioning, with the area outperforming 60% of locations assessed nationally by AreaSearch

AreaSearch's latest postcode level ATO data for FY-23 reveals that income in the Rockbank - Mount Cottrell SA2 is lower than average on a national basis, with the median assessed at $55,864 while the average income stands at $63,076. This contrasts with Greater Melbourne's figures of a median income of $57,688 and an average income of $75,164. Based on Wage Price Index growth of 8.25% since FY-23, current estimates would be approximately $60,473 (median) and $68,280 (average) as of September 2025. From the 2021 Census, household, family and personal incomes in Rockbank - Mount Cottrell cluster around the 73rd percentile nationally. The earnings profile shows the predominant cohort spans 46.4% of locals (18,738 people) in the $1,500 - 2,999 category, reflecting patterns seen in the region where 32.8% similarly occupy this range. High housing costs consume 19.1% of income, though strong earnings still place disposable income at the 68th percentile and the area's SEIFA income ranking places it in the 5th decile.

Rockbank - Mount Cottrell is characterized by a predominantly suburban housing profile, with ownership patterns similar to the broader region

Dwelling structure within Rockbank - Mount Cottrell, as evaluated at the latest Census, comprised 96.3% houses and 3.8% other dwellings (semi-detached, apartments, 'other' dwellings), in comparison to Melbourne metro's 67.9% houses and 32.1% other dwellings. Meanwhile, the level of home ownership within Rockbank - Mount Cottrell was lagging that of Melbourne metro, at 9.2%, with the remainder of dwellings either mortgaged (66.3%) or rented (24.5%). The median monthly mortgage repayment in the area was above the Melbourne metro average at $2,017, while the median weekly rent figure was recorded at $400, compared to Melbourne metro's $2,000 and $390. Nationally, Rockbank - Mount Cottrell's mortgage repayments are higher than the Australian average of $1,863, while rents are exceeding the national figure of $375.

Rockbank - Mount Cottrell features high concentrations of family households, with a higher-than-average median household size

Family households dominate at 84.3% of all households, comprising 53.5% couples with children, 20.8% couples without children, and 8.9% single parent families. Non-family households make up the remaining 15.7%, with lone person households at 13.6% and group households comprising 2.1% of the total. The median household size of 3.2 people is larger than the Greater Melbourne average of 2.6.

The educational profile of Rockbank - Mount Cottrell exceeds national averages, with above-average qualification levels and academic performance metrics

Educational attainment in Rockbank - Mount Cottrell significantly surpasses broader benchmarks, with 34.7% of residents aged 15+ holding university qualifications compared to 24.3% in the SA3 area. This substantial educational advantage positions the area strongly for knowledge-based opportunities. Bachelor degrees lead at 22.4%, followed by postgraduate qualifications (9.9%) and graduate diplomas (2.4%). Trade and technical skills feature prominently, with 27.9% of residents aged 15+ holding vocational credentials, including advanced diplomas (12.6%) and certificates (15.3%).

Educational participation is notably high, with 42.1% of residents currently enrolled in formal education. This includes 16.6% in primary education, 7.4% in secondary education, and 5.8% pursuing tertiary education.

Transport servicing is low compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility

Public transport analysis reveals 45 active transport stops operating within Rockbank - Mount Cottrell, comprising a mix of trains and buses. These stops are serviced by 13 individual routes, collectively providing 4,180 weekly passenger trips. Transport accessibility is rated as limited, with residents typically located 1034 meters from the nearest transport stop. As a primarily residential area, most residents commute outward; the car remains the dominant mode at 88%, with 8% by train. Vehicle ownership averages 1.6 per dwelling, which is above the regional average. Some 23.5% of residents work from home (2021 Census; may reflect COVID-19 conditions).

Service frequency averages 597 trips per day across all routes, equating to approximately 92 weekly trips per individual stop.

Rockbank - Mount Cottrell's residents boast exceedingly positive health performance metrics with very low prevalence of common health conditions across all age groups

Health outcomes data demonstrates outstanding results across Rockbank - Mount Cottrell, based on AreaSearch's assessment of mortality rates and chronic condition prevalence. There is a very low prevalence of common health conditions across all age groups, and the rate of private health cover is relatively low at approximately 50% of the total population (~20,354 people). This compares to 56.7% across Greater Melbourne and a national average of 55.7%.

The most common medical conditions in the area are asthma and mental health issues, impacting 6.0% and 4.0% of residents, respectively, while 84.6% declared themselves as completely clear of medical ailments compared to 72.6% across Greater Melbourne. The area has 3.8% of residents aged 65 and over (1,534 people), which is lower than the 15.1% in Greater Melbourne. Health outcomes among seniors are particularly strong, though they rank lower nationally than the broader population.

Rockbank - Mount Cottrell is among the most culturally diverse areas in the country based on AreaSearch assessment of a range of language and cultural background related metrics

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. The main religion in Rockbank - Mount Cottrell is Christianity, which makes up 39.5% of the population. However, the most apparent overrepresentation is in the Other category, which comprises 17.4% of the population, substantially higher than the Greater Melbourne average of 2.3%.

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%).

Rockbank - Mount Cottrell hosts a very young demographic, ranking in the bottom 10% of areas nationwide

At 31 years, Rockbank - Mount Cottrell's median age is notably under the Greater Melbourne average of 37 and is significantly lower than the Australian median of 38. Relative to Greater Melbourne, Rockbank - Mount Cottrell has a higher concentration of 35 - 44 residents (25.5%) but fewer 55 - 64 year-olds (4.7%). This 35 - 44 concentration is well above the national 14.3%. In the period since 2021, the 5 to 14 age group has grown from 13.8% to 17.9% of the population, while the 35 to 44 cohort increased from 21.9% to 25.5%. Conversely, the 25 to 34 cohort has declined from 26.4% to 19.5% and the 0 to 4 group dropped from 10.8% to 9.0%. Demographic modeling suggests Rockbank - Mount Cottrell's age profile will evolve significantly by 2041. The 35 to 44 age cohort is projected to expand substantially, increasing by 11,359 people (110%) from 10,298 to 21,658.