Mount Colah

Suburb (SAL)

Greater Sydney / Hornsby

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Aug 2026 · Refreshed ABS QuickStats SAL12761 How we calculate this
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Suburb (SAL) Boundary Analysis

This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.

SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.

Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in Mount Colah

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The median house price in Mount Colah is $1.68m, with units at $666k. House values have moved 2.3% a year compounded over five years.

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DemographicsPopulation Growth in Mount Colah

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Mount Colah has an estimated 8,194 residents, up from 7,816 at the 2021 Census — a change of 378 people, or 4.8%. Growth has averaged 0.7% a year over five years. That puts 741 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 the analysis of demographic updates from the ABS for the surrounding region and subsequent address validations by AreaSearch since the Census, the suburb of Mount Colah has an estimated population of 8,194 as of May 2026. This represents a rise of 378 individuals (4.8%) compared to the 2021 Census, which counted 7,816 residents. The estimation is based on a resident figure of 8,176 calculated by AreaSearch using the June 2025 ERP release from the ABS, supplemented by 36 validated new addresses since the Census. This population size results in a density of 740 persons per square kilometer, matching typical averages for areas evaluated by AreaSearch.

The 4.8% expansion in the suburb of Mount Colah since the 2021 census outpaced the broader SA3 region (4.5%), placing it ahead of nearby areas. Growth in the suburb of Mount Colah was mainly fueled by overseas migration, which accounted for approximately 56.00000000000001% of the total population growth during recent times. Projections from the ABS and Geoscience Australia released in 2024 with a 2022 baseline are used for each SA2 region. In cases where these are unavailable, AreaSearch uses SA2-level projections from the NSW State Government published in 2022 with a 2021 baseline. Projected growth rates for specific age cohorts from these datasets are applied to all locations for the period spanning 2032 to 2041. Looking at future demographic patterns, population growth is expected to exceed the median of locations reviewed by AreaSearch, with the suburb of Mount Colah projected to add 1,062 residents by 2041 under aggregated SA2 projections, representing a total increase of 12.7% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of Mount Colah?
Total population for the suburb of Mount Colah was estimated to be approximately 8,194 as at May 26. This is based upon an estimated resident population of 8,176 from the ABS up to June 2025.
How has the population in the suburb of Mount Colah changed since 2021?
The suburb of mount colah has added approximately 378 people and shown a 4.84% increase from the 7,816 people recorded at the 2021 Census period.
What is the population density in the suburb of Mount Colah?
The population density in the suburb of Mount Colah is estimated at 740 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the suburb of Mount Colah?
Over the past 10 years, the population in the suburb of Mount Colah has shown a compound annual growth rate of 1.1% per annum.
What are the main drivers of population growth in the suburb of Mount Colah?
Population growth in the suburb of Mount Colah is driven by: Overseas migration (56.00000000000001%), Natural increase (44.0%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 56.00000000000001% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Mount Colah

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119 new dwellings have been approved in Mount Colah over the past five years, an average of 23 a year. That is 3.0 approvals per 1,000 residents. Of the 23 dwellings approved in the latest reporting year, 43% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 6, well below that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.

Detail

Based on building approvals recorded by the ABS and allocated from local statistical divisions, Mount Colah averages approximately 23 residential approvals per year. A total of 119 homes were approved over the 5 financial years from FY-21 to FY-25, with an additional 6 approvals logged during FY-26 so far. Over the 5 financial years from FY-21 to FY-25, the area saw an average of 2.2 residents added for every new dwelling built, suggesting robust demand that is likely to sustain local property values. The average construction cost for these new dwellings is $428,000, which sits above the regional average and points to a focus on higher-quality builds.

Additionally, commercial approvals worth $15.2 million have been registered in the current financial year, representing a moderate volume of commercial development. In comparison to Greater Sydney, building activity per capita in Mount Colah is similar, keeping the local market in equilibrium with neighbouring areas, although construction activity has slowed lately. This rate also falls below the national average, reflecting the established character of the area and indicating potential planning constraints. New housing approvals consist of 43.0% detached houses and 57.0% semi-detached or multi-unit dwellings. This orientation toward denser housing options provides more affordable paths to entry and draws downsizers, investors, and first-time buyers. This represents a clear shift from the existing housing stock, which is currently 84.0% houses, indicating a scarcity of developable land alongside changing lifestyle choices and affordability constraints. The ratio of 709 residents for every dwelling approval highlights a quiet development landscape with low building activity. Long-term projections indicate Mount Colah will gain 1,044 residents by 2041, based on the most recent quarterly estimates from AreaSearch. If the current pace of construction persists, the supply of new housing may not keep up with population growth, which could increase competition among buyers and support upward pressure on prices.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of Mount Colah recently?
Dwelling approval activity in the the suburb of Mount Colah area has seen 23 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Mount Colah's current population of 8,194 has been supported by 23 approvals on average over recent years.
How does the suburb of Mount Colah's development activity compare to the broader region?
The suburb of Mount Colah has seen 0.3 approvals per 100 people in recent years, compared to 0.65 approvals in the broader region. This means that one dwelling has been approved for every 708 people in the suburb of Mount Colah, compared to one for every 190 in the broader region.
Is the suburb of Mount Colah keeping up with housing demand?
With the population expected to increase by 1,044 people by 2041, around 522 new dwellings will be necessary. Recent approval levels may be insufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling. This indicates potential housing shortages if current approval trends continue.
What has been the trend in development approvals over the past five years in the suburb of Mount Colah?
Looking at development activity over the past five years, the suburb of Mount Colah's approval levels have been significantly below the yearly average of 23, showing a notable downturn in recent development.
How many dwellings will be needed to accommodate future population growth in the suburb of Mount Colah?
The population in the suburb of Mount Colah is expected to grow by 1,044 people by 2041, necessitating approximately 522 new dwellings. This calculation is based on the current census average of 2.0 persons per dwelling in the area.
How does recent development compare to population growth in the suburb of Mount Colah?
Over the past five years, the population in the suburb of Mount Colah has grown by approximately 996 people, while 119 residential approvals were recorded. This equates to a ratio of 8.4 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 suburb of Mount Colah?
With dwelling approval activity running at an average of 23 approvals per year and a population of 8,194, there appears to be a supply shortfall relative to projected demand, presenting strong opportunities for residential developers. With the population expected to increase by 1,044 people by 2041, around 522 new dwellings will be necessary. Current approval trends may be insufficient to meet forecast demand, indicating strong development opportunities.
Approvals Pipeline Development applications near Mount Colah

Development applications around Mount Colah

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

Project PipelineInfrastructure & Major Projects in Mount Colah

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AreaSearch tracks 2 current infrastructure and development projects inside Mount Colah, worth an estimated $65 million. A further 30 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $36.8 billion. 5 are already under construction and 7 are due for completion within three years. The pipeline spans residential development, transport & logistics and communities, precincts & urban renewal. 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

Local infrastructure projects, major planning decisions, and development initiatives are key drivers of regional growth. A total of 5 projects have been identified by AreaSearch as having a likely impact on the area. Major projects include the transition of Hornsby Park from a quarry to parklands, the Mount Colah Station Upgrade, the Arlington Heights Estate, and the Northern Extension of Berowra Valley National Park, with key details provided below for those of highest relevance.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of Mount Colah?
Key infrastructure and planning changes likely to influence the suburb of Mount Colah include: Hornsby Park - from quarry to parklands (Construction); Mount Colah Station Upgrade (Completed); Arlington Heights Estate (Completed); Berowra Valley National Park Northern Extension (Completed); and M1 Pacific Motorway Northbound Capacity (Wahroonga To Mount Colah) (Planning). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of Mount Colah?
Infrastructure development impacting the suburb of Mount Colah spans multiple sectors including Transport & Logistics, Communities, Precincts & Urban Renewal, and Residential Development, among others.
What is the scale of infrastructure investment impacting the suburb of Mount Colah?
Infrastructure investment analysis indicates substantial capital deployment exceeding $8.7 billion in projects that will impact the extended area.
How does the suburb of Mount Colah's infrastructure development compare to other areas?
With an infrastructure score in the top 40%, the suburb of Mount Colah demonstrates above-average development activity compared to national benchmarks.
Mount Colah Station Upgrade
Category: Transport & Logistics
Stage: Completed | Est. Comp: 2024
Source / Links: Link 1   Link 2  

The Mount Colah Station Upgrade has delivered a new accessible footbridge with three lifts, upgraded station entries, improved paths of travel and platform resurfacing, replacing the former footbridge and removing many stairs. The project added a new family accessible toilet and ambulant toilet, upgraded power and services, and improved wayfinding signage, lighting, security and other station systems. Design and construction were delivered for Sydney Trains between March 2022 and August 2024 as part of broader accessibility improvements on the Main North rail line.

Transport & Logistics

Hornsby Park - from quarry to parklands
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

Transformation of the 60-hectare former Hornsby Quarry site into a major regional parkland. The project is being delivered in stages, with the Crusher Plant Precinct, Southern Lookout, and Heritage Steps opening in March 2026. Current works focus on the Old Mans Valley Field of Play, featuring a multi-purpose sporting field, bike pump and jump tracks, and new community facilities to support the growing population near the Hornsby Town Centre.

Communities, Precincts & Urban Renewal

Arlington Heights Estate
Category: Residential Development
Stage: Completed | Est. Comp: 2024
Source / Links: Link 1   

Boutique land release of 26 large residential lots in an elevated bushland setting on the northern edge of Mount Colah, completed in 2023-2024.

Residential Development

Hornsby Park
Category: Communities
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Transformation of the 60-hectare former Hornsby Quarry site into a major regional bush parkland in Sydney's upper north shore. The first stage opened to the public in late March 2026, comprising the Crusher Plant Precinct (lawns, picnic shelters, electric BBQs, accessible toilets, free parking), the Southern Lookout providing fully accessible sweeping views into the volcanic quarry void, and the upgraded Heritage Steps linking the Hornsby Aquatic and Leisure Centre down into the precinct. Construction continues in stages, with future works including the Quarry Loop walking and cycling track, additional scenic lookouts, a bike jump and pump track, and the Old Mans Valley field of play.Longer term masterplan elements feature a freshwater quarry lake, wetlands cascade, lakeside amenities and an accessible lift to the quarry base. The masterplan was designed by Clouston Associates with Hornsby Shire Council. Stage 1 has been supported by the NSW Government through the Stronger Communities Fund.

Communities

M1 Pacific Motorway Northbound Capacity (Wahroonga To Mount Colah)
Category: Transport & Logistics
Stage: Planning | Est. Comp: 2027
Source / Links: Link 1   

Addressing extreme congestion on M1 Pacific Motorway between North Connex portal and Mt Colah to improve traffic flow for over 90,000 daily vehicle movements.

Transport & Logistics

Linea Apartments (94-98 George Street)
Category: Residential Development
Stage: Approved | Est. Comp: 2028
Source / Links: Link 1   

DA-approved mixed-use project within Hornsby town centre: demolition of existing structures and construction of a 13-14 storey building comprising approx. 76 residential units above three levels of commercial floorspace, with recent Section 4.55 modifications lodged in 2025.

Residential Development

Berowra Valley National Park Northern Extension
Category: Environmental & Disaster Management
Stage: Completed | Est. Comp: 2024
Source / Links: Link 1   Link 2  

Addition of about 120 hectares of bushland to the northern end of Berowra Valley National Park adjoining Mount Colah. The extension secures long term protection of endangered ecological communities and habitat, strengthens bushland corridors in the Berowra Creek catchment and improves local walking and recreation opportunities for nearby suburbs.

Environmental & Disaster Management

Hornsby Town Centre Masterplan and TOD Rezoning
Category: Communities, Precincts & Urban Renewal
Stage: Approved | Est. Comp: 2041
Source / Links: Link 1   Link 2  

Council's adopted Hornsby Town Centre Masterplan has been implemented through the NSW Government's Hornsby Transport Oriented Development rezoning, which came into effect on 27 November 2024. The rezoning provides capacity for over 6,000 new homes, about 2,900 jobs, affordable housing contributions, new and upgraded open space, a new library, community centre, cultural and creative facilities, better walking and cycling links, and provisions for a new bus interchange. Development applications can now be lodged and assessed under the new planning controls.

Communities, Precincts & Urban Renewal

Jobs & IndustryEmployment Trends in Mount Colah

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4,525 residents of Mount Colah are employed, from a labour force of 4,791. Unemployment sits at 5.6%, with participation at 71.1%. Weighted for its industry mix, the area's sectors are forecast to grow about 7.1% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 6,481, about 79% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

Mount Colah is characterized by a workforce with high levels of education, particularly within the technology sector, alongside an unemployment rate of 5.6% and an estimated job growth rate of 2.4% over the preceding year, according to statistical data aggregated by AreaSearch. In March 2026, employed residents numbered 4,525, while the unemployment rate was 1.4% higher than the Greater Sydney average of 4.1%. Workforce participation is typical, standing at 71.1% compared to 69.1% for Greater Sydney. Census responses show that a significant 47.3% of the working population worked from home, though this figure may reflect the influence of COVID-19 lockdowns.

The primary sectors employing local residents are health care & social assistance, education & training, and professional & technical services. The area exhibits a notable employment concentration in education & training, which employs 1.4 times the regional proportion. Conversely, the transport, postal & warehousing sector is underrepresented, employing only 3.4% of the local workforce compared to 5.3% across Greater Sydney. The ratio of local workers to resident workers suggests that the area provides a limited number of jobs locally. Analysis of SALM and ABS data aggregated from local statistical areas shows that during the year ending March 2026, employment grew by 2.4% and the overall labour force expanded by 1.0%, leading to a decline in the unemployment rate of 1.3 percentage points. In comparison, Greater Sydney saw employment rise by 1.9%, the labour force grow by 1.9%, and unemployment decrease slightly. National employment forecasts from May-25 by Jobs and Skills Australia provide further context on expected demand in Mount Colah. These five and ten-year projections have been applied to the local workforce structure to model future growth. Nationally, employment is projected to grow by 6.6% over five years and 13.7% over ten years, with significant variation across different industries. Applying these sector-specific forecasts to the employment distribution of Mount Colah suggests local employment could grow by 7.1% over five years and 14.5% over ten years, representing a basic weighted extrapolation that does not account for local population projections.

Frequently Asked Questions - Employment

What is the employment situation in the suburb of Mount Colah?
As of March 2026, the suburb of Mount Colah has approximately 4,525 employed residents with an unemployment rate of 5.6%. The unemployment rate is moderate, indicating some available workforce capacity. Employment indicators are below the national average, suggesting room for improvement.
How does the suburb of Mount Colah's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of Mount Colah stands at 5.6%, which is 1.4 percentage points above Greater Sydney's rate of 4.1%. 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 suburb of Mount Colah?
The employment landscape in the suburb of Mount Colah is dominated by several key sectors. The largest employers are health care & social assistance (16.3% of employment), education & training (12.5%), and professional & technical (11.8%). Other significant employers include construction and retail trade.
How has employment changed recently in the suburb of Mount Colah?
Over the past year to March 2026, the suburb of Mount Colah has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fall. By comparison, Greater Sydney saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the suburb of Mount Colah?
The workforce participation rate in the suburb of Mount Colah is 71.1%, which represents the proportion of working-age residents who are either employed or actively seeking work. This high participation rate indicates strong workforce engagement and economic vitality. The local rate leading the Greater Sydney average of 69.1%, showing similar workforce dynamics to the broader region.
Which industries are over-represented in the suburb of Mount Colah's employment market?
The suburb of mount colah shows notable specialization in education & training, which employs 12.5% of the local workforce compared to 8.9% regionally. This moderate specialization indicates some local strength in the sector. The area also shows above-average employment in 1 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the suburb of Mount Colah?
Based on Jobs and Skills Australia projections applied to the suburb of Mount Colah's industry mix, employment is expected to grow by 7.1% over the next five years and 14.5% over ten years. This exceeds the national forecast of 6.6% over five years, suggesting the area's industry composition is well-positioned for future growth. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the suburb of Mount Colah compare nationally?
The suburb of mount colah's employment market shows below-average performance in national comparisons. While employment opportunities exist, the area faces more challenges than many other regions. Recent job advertisement trends show the broader employment region saw a 5.9% decline, ranking 29.0th out of 37 regions nationally.
What employment opportunities exist for skilled workers in the suburb of Mount Colah?
Skilled workers will find excellent opportunities in the suburb of Mount Colah, with knowledge-intensive sectors comprising 50.5% of local employment. Key sectors for skilled workers include health care & social assistance (16.3%), education & training (12.5%), and professional & technical (11.8%). With projected employment growth of 7.1% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Mount Colah

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Median household income in Mount Colah is $2,505 a week (about $130,000 a year), with median personal income at $1,032 a week. ATO records put median taxable income at $60,214 a year against an average of $76,842. 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

Tax data from the ATO aggregated by AreaSearch for financial year 2023 indicates that income levels in Mount Colah are significantly higher than the national average. Local taxpayers recorded a median income of $60,214 and an average income of $76,842, compared to Greater Sydney averages of $60,817 and $83,003 respectively. Adjusting these figures for a Wage Price Index growth of 10.32% since financial year 2023 yields estimated values of approximately $66,428 for the median and $84,772 for the average as of March 2026. Census findings place household, family, and personal incomes in Mount Colah in the 81st to 90th percentiles nationally.

The largest earnings segment is the $1,500 - 2,999 weekly bracket, containing 31.6% of residents (2,589 people), which is comparable to the metropolitan average of 30.9%. High-income earners are common, with 41.0% earning more than $3,000 per week, pointing to strong local purchasing power. Housing costs consume 15.1% of income, and strong overall earnings place residents in the 90th percentile for disposable income, while the SEIFA index ranks the area in the 9th decile for income.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of Mount Colah?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Mount Colah is approximately $66,428. The official ATO data from FY-23 recorded a median of $60,214.
What is the average taxable income in the suburb of Mount Colah?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Mount Colah is approximately $84,772. The official ATO data from FY-23 recorded an average of $76,842.
How does the median taxable income in the suburb of Mount Colah compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Mount Colah is approximately $66,428 compared to $67,093 in Greater Sydney. The official ATO data from FY-23 shows $60,214 and $60,817 respectively.
How does the average taxable income in the suburb of Mount Colah compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Mount Colah is approximately $84,772 compared to $91,569 in Greater Sydney. The official ATO data from FY-23 shows $76,842 and $83,003 respectively.
What are the main income cohorts in the suburb of Mount Colah according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~31.6% / 2,589 persons) of the suburb of Mount Colah's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the suburb of Mount Colah compare to the region?
The largest income cohort in the suburb of Mount Colah is the $1,500 - 2,999 group, representing about 31.6% of the population. In comparison, Greater Sydney's largest income cohort is the $1,500 - 2,999 group, representing 30.9% of its population, according to the 2021 Census.
What is the median household income in the suburb of Mount Colah according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of Mount Colah is $2,505/wk.
What is the median family income in the suburb of Mount Colah according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of Mount Colah is $2,805/wk.
What is the median personal income in the suburb of Mount Colah according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of Mount Colah is $1,032/wk.
How does the suburb of Mount Colah's income rank nationally?
AreaSearch's latest postcode level ATO data for FY-23 reveals that income in the suburb of Mount Colah is very high nationally, with the median assessed at $60,214 while the average income stands at $76,842. This contrasts to Greater Sydney's figures of a median income of $60,817 and an average income of $83,003. Based on Wage Price Index growth of 10.32% since FY-23, current estimates would be approximately $66,428 (median) and $84,772 (average) as of March 2026.
What is the disposable income in the suburb of Mount Colah?
The estimated disposable income in the suburb of Mount Colah is $9,216 per year according to AreaSearch analysis.
How does the suburb of Mount Colah's disposable income compare to the region?
The suburb of mount colah's disposable income is $9,216 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Mount Colah

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Mount Colah had 2,664 occupied dwellings at the 2021 Census, 84% detached houses and 12% apartments. 49% are owned with a mortgage, 18% rented and 34% owned outright. At that Census the median rent was $525 a week and the median mortgage repayment $2,544 a month, a total housing cost higher than 88% of areas nationally. Rent absorbs 21.0% of household income here and mortgage repayments 23.4%. 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, residential dwellings in Mount Colah consisted of 83.8% detached houses and 16.2% other housing types like semi-detached properties, apartments, and alternative structures, compared to 55.9% houses and 44.1% other dwellings across metropolitan Sydney. Home ownership rates in Mount Colah are higher than the metropolitan average at 33.6%, with remaining homes either being purchased with a mortgage (48.7%) or rented (17.6%). The median monthly mortgage payment was higher than the Sydney metropolitan average at $2,544, while the median weekly rent was $525, compared to metropolitan averages of $2,427 and $470.

On a national level, mortgage repayments in Mount Colah are notably higher than the Australian median of $1,863, and weekly rents are also well above the national median of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of Mount Colah?
In the suburb of Mount Colah, 33.6% of homes are owned outright, 48.7% are owned with a mortgage, and 17.6% are rented.
What percentage of dwellings in the suburb of Mount Colah are houses?
According to the latest data, 83.8% of dwellings in the suburb of Mount Colah are houses.
What percentage of dwellings in the suburb of Mount Colah are apartments or units?
In the suburb of Mount Colah, 12.3% of dwellings are apartments or units, with an additional 3.7% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of Mount Colah?
Outright home ownership in the suburb of Mount Colah stands at 33.6%, compared to 28.7% in Greater Sydney.
What is the median monthly mortgage repayment in the suburb of Mount Colah?
The median monthly mortgage repayment in the suburb of Mount Colah is $2,544, compared to $2,427 in Greater Sydney.
What is the median weekly rent in the suburb of Mount Colah?
The median weekly rent in the suburb of Mount Colah is $525, compared to $470 in Greater Sydney.
What is the distribution of rental prices in the suburb of Mount Colah?
In the suburb of Mount Colah, 0.9% of rentals are $0-149/week, 6.2% are $150-349/week, 65.8% are $350-649/week, 25.8% are $650-949/week, and 1.4% are $950+/week.
What is the average monthly housing cost in the suburb of Mount Colah?
The aggregate monthly housing cost in the suburb of Mount Colah is $1,639, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of Mount Colah?
In the suburb of Mount Colah, households with mortgages typically spend 23.4% of their income on mortgage repayments, while renters spend 21.0% of their income on rent.
How crowded are homes in the suburb of Mount Colah?
The average persons per bedroom ratio in the suburb of Mount Colah is 0.9, indicating the level of household density.
How does housing affordability in the suburb of Mount Colah compare to the region?
Housing affordability in the suburb of Mount Colah shows mortgage holders spending 23.4% of income on repayments (vs 27.0% regionally), while renters spend 21.0% of income on rent (vs 22.6% regionally).
What types of dwellings are most common in the suburb of Mount Colah?
The dwelling mix in the suburb of Mount Colah consists of 83.8% detached houses, 3.7% semi-detached dwellings, 12.3% apartments, and 0.2% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of Mount Colah?
Considering the housing occupancy patterns, the weighted average monthly housing cost is approximately $1,639. This accounts for outright owners paying no housing costs, mortgage holders paying $2,544/month, and renters paying $2,273/month.
How affordable is housing in the suburb of Mount Colah relative to local incomes?
Housing in Mount Colah consumes approximately 15.1% of median household income ($10,847 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 suburb of Mount Colah?
Recent development applications in Mount Colah show attached dwellings contributing 38% of approvals compared to 16% of existing stock, while detached houses represent 62% of applications versus 84% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.

HouseholdsHousehold Composition in Mount Colah

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Mount Colah counted 2,664 households at the 2021 Census, averaging 2.9 people each. 47% are couples with children, more than in 92% of areas nationally, against 25% couples without children. 15% of households are people living alone, and families average 1.5 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Families make up 83.2% of all households, consisting of couples with children at 47.4%, couples without children at 25.0%, and single-parent households at 9.7%. Non-family households account for the remaining 16.8%, with single-person households at 15.4% and group shared households at 1.5%. The median household size of 2.9 people is larger than the Greater Sydney average of 2.7.

Frequently Asked Questions - Households

How many households are in the suburb of Mount Colah?
As of the 2021 Census, the suburb of Mount Colah had 2,664 households. Based on population growth patterns, this has grown by approximately 4.8% to an estimated 2,793 households today.
What is the typical household size?
The median household size in the suburb of Mount Colah is 2.9 people. This compares to 2.7 in Greater Sydney and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 83.2% of all households. The remaining households consist of lone person households (15.4%), group households (1.5%), and other household types (0.0%).
How are families structured in the area?
Among the 2,216 family households, 47.4% are couples with children, 25.0% are couples without children at home, and 9.7% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of Mount Colah compare to regional household patterns?
Compared to Greater Sydney, the suburb of Mount Colah shows distinct household patterns. Family households are notably over-represented at 83.2% (versus 72.6% regionally). Conversely, lone person households are under-represented at 15.4% compared to the regional 23.2%. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the suburb of Mount Colah have an average of 1.5 children, matching the Greater Sydney average of 1.5. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the suburb of Mount Colah?
Marriage patterns reveal 56.6% of the adult population are currently married, while 30.5% have never married. This compares to 48.3% married and 36.4% never married across Greater Sydney.
How significant are single-person households?
Single-person households represent 15.4% of all households in the suburb of Mount Colah, notably lower than the regional average of 23.2%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 1.5% of households, well below the Greater Sydney average of 4.2%. This low rate suggests limited student or young professional shared accommodation.
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EducationSchools & Education in Mount Colah

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39.9% of adults in Mount Colah hold a university qualification, including 26.0% with a bachelor degree and 10.2% with postgraduate qualifications, higher than 91% of areas nationally. A further 18.5% hold a vocational qualification. 2 schools serve the area, with 459 enrolment places and an average ICSEA of 1,093 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

Educational attainment profiles show that the area has a university qualification rate of 39.9%, which is lower than the SA4 regional average of 57.1%. This presents a challenge as well as an opportunity for focused educational programs. Bachelor degrees are the most common qualification at 26.0%, followed by postgraduate degrees at 10.2% and graduate diplomas at 3.7%. Technical and trade qualifications are also common, with 30.6% of residents aged 15 and over holding vocational qualifications, comprising advanced diplomas at 12.1% and certificates at 18.5%. Enrolment in education is high, with 30.2% of local residents participating in study.

Of those studying, 9.8% are in primary school, 8.9% are in high school, and 5.5% are undertaking tertiary studies.

Frequently Asked Questions - Education

What percentage of people in the suburb of Mount Colah have university qualifications?
39.9% of people aged 15 and over in the suburb of Mount Colah have university qualifications, compared to 38.0% in the broader region.
What percentage of people in the suburb of Mount Colah have no formal qualifications?
29.6% of people aged 15 and over in the suburb of Mount Colah have no formal qualifications, compared to 34.2% regionally.
How does the suburb of Mount Colah's education level compare to national averages?
The suburb of mount colah ranks in the 91th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the suburb of Mount Colah?
The most common qualifications in the suburb of Mount Colah are: Bachelor Degree (26.0%), Certificate (18.5%), Advanced Diploma (12.1%).
What proportion of the suburb of Mount Colah's population is currently attending educational institutions?
30.2% of the population in the suburb of Mount Colah is currently engaged in formal education, with 9.8% in primary school, 8.9% in secondary school, 5.5% at university.
What is the ICSEA score for schools in the suburb of Mount Colah?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Mount Colah is 1093, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the suburb of Mount Colah?
There are 2 schools within the suburb of Mount Colah, with a combined enrollment of approximately 459 students.
What types of schools are available in the suburb of Mount Colah?
The suburb of mount colah includes 1 primary school, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Mount Colah

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Getting AroundTransport & Commuting in Mount Colah

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Public transport in Mount Colah reaches 82 stops on 24 routes, timetabled for about 2,200 services a week. The typical home sits about 150 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.5 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 infrastructure consists of 82 active transit stops in Mount Colah, including bus and rail services. These stops support 24 distinct routes, delivering 2,170 passenger trips per week. Transit accessibility is strong, with an average distance of 149 meters from residents to the nearest stop. Due to the residential nature of the area, most workers commute out of the suburb, with private cars remaining the primary transport mode at 83%, followed by trains at 11%. Dwellings average 1.5 vehicles, which is above the metropolitan average. A high proportion of residents, 47.3%, worked from home according to the 2021 Census, which may have been influenced by pandemic restrictions.

Across all transit routes, service frequency averages 310 daily trips, representing approximately 26 weekly trips per transit stop.

Frequently Asked Questions - Transport

How many public transport stops are in Mount Colah?
There are 82 public transport stops within the suburb of Mount Colah.
How frequent are the transport services in Mount Colah?
the suburb of Mount Colah has 2,170 weekly trips across 24 routes, averaging 310 trips per day.
How far are residents from public transport in Mount Colah?
On average, residential properties are 149 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Mount Colah

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72.2% of residents in Mount Colah report no long-term health condition, a healthier profile than 77% of areas nationally. 3.7% need daily assistance with core activities, and 57.3% hold private health cover. The standardised death rate runs at 4.3 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Health indicators demonstrate positive outcomes across Mount Colah based on mortality rates and chronic illness data, showing low rates of common health conditions across age groups. Private health insurance coverage is high, with approximately 57% of the population (~4,693 people) holding cover, compared to 59.9% in Greater Sydney. Asthma and mental health issues are the most frequent medical conditions, affecting 8.2 and 7.1% of residents respectively. Conversely, 72.2% of the population reported no chronic medical conditions, compared to 74.6% across Greater Sydney. The population aged under 65 shows better health metrics than the average.

Residents aged 65 and older represent 16.3% of the population (1,335 people), and health outcomes for this senior cohort are strong, with national rankings aligning with those of the wider population.

Frequently Asked Questions - Health

How many people in the suburb of Mount Colah have private health insurance?
Around 57.3% of people in the suburb of Mount Colah are covered by private health insurance, which compares to 59.9% in the broader region of Greater Sydney.
What percentage of the population requires ongoing medical assistance in the suburb of Mount Colah?
In the suburb of Mount Colah, 3.7% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 5.2% of people in Greater Sydney require similar assistance.
How prevalent is asthma in the suburb of Mount Colah?
8.2% of people in the suburb of Mount Colah are diagnosed with asthma. In comparison, 6.4% of the population across Greater Sydney is affected by asthma.
What percentage of people have diabetes in the suburb of Mount Colah?
Diabetes affects 3.8% of the the suburb of Mount Colah population, while in the surrounding region, 4.3% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the suburb of Mount Colah?
2.6% of people in the suburb of Mount Colah have heart disease. Across the region of Greater Sydney, 3.2% of the population is affected by heart disease.
How does the suburb of Mount Colah compare to the region in terms of overall private health coverage?
In the suburb of Mount Colah, 57.3% of the population are estimated to have private health insurance. Comparatively, Greater Sydney sees an estimated private health coverage rate of 59.9%.

Ancestry & LanguageCultural Diversity in Mount Colah

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33.3% of Mount Colah residents were born overseas and 26.2% speak a language other than English at home. The largest reported ancestries are English (24.6%) and Australian (23.2%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Mount Colah displays higher levels of cultural diversity than most local areas, with 33.3% of residents born outside Australia and 26.2% speaking a non-English language at home. Christianity is the most common religious affiliation, representing 48.3% of the community. The most distinct relative overrepresentation is Jewish residents, who make up 0.4% of the population compared to 0.8% across Greater Sydney. Based on parental country of birth, the three most common ancestries are English at 24.6% of the population (above the regional average of 19.0%), Australian at 23.2% (above the regional average of 17.8%), and Other at 12.1%.

Differences are visible in other ancestries, with Hungarian backgrounds represented at 0.5% of the population (compared to 0.3% regionally), Russian at 0.5% (compared to 0.4%), and Korean at 0.8% (compared to 1.1%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of Mount Colah?
Mount Colah was found to be more culturally diverse than the vast majority of local markets, with 33.3% of its population born overseas and 26.2% speaking a language other than English at home.
What is the most common religion in the suburb of Mount Colah?
The main religion in Mount Colah was found to be Christianity, which makes up 48.3% of people in Mount Colah. However, the most apparent overrepresentation was in Judaism, which comprises 0.4% of the population, compared to 0.8% across Greater Sydney.
What are the top countries of origin in the suburb of Mount Colah?
In terms of ancestry (country of birth of parents), the top three represented groups in Mount Colah are English, comprising 24.6% of the population, which is substantially higher than the regional average of 19.0%, Australian, comprising 23.2% of the population, which is substantially higher than the regional average of 17.8%, and Other, comprising 12.1% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Hungarian is notably overrepresented at 0.5% of Mount Colah (vs 0.3% regionally), Russian at 0.5% (vs 0.4%) and Korean at 0.8% (vs 1.1%).
How does the percentage of people born overseas compare to the regional average?
33.3% of the the suburb of Mount Colah population was born overseas, compared to 40.5% regionally.
What percentage of the the suburb of Mount Colah population speaks a language other than English at home?
26.2% of the population in the suburb of Mount Colah speaks a language other than English at home, compared to 39.5% in the wider region.
How many people in the suburb of Mount Colah identify as Australian Aboriginal?
0.6% of the the suburb of Mount Colah population identifies as Australian Aboriginal, compared to 1.3% in the region.
What is the citizenship status of the population in the suburb of Mount Colah?
89.2% of the the suburb of Mount Colah population holds citizenship, compared to 80.8% in the wider region.

Age StructureAge Profile of Mount Colah

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The median resident of Mount Colah is 40. 22.5% 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

The median age of 40 in Mount Colah is higher than the Greater Sydney median of 37 and the national median of 38. The 45 - 54 age bracket is overrepresented at 16.6% locally compared to the metropolitan average, while the 25 - 34 bracket is underrepresented at 8.5%. Since 2021, the 15 to 24 cohort has increased from 12.1% to 14.0% of the population, and the 75 to 84 cohort has grown from 4.3% to 5.7%. In contrast, the 25 to 34 age group fell from 10.7% to 8.5%, and the 0 to 4 group declined from 5.9% to 4.8%.

Projections suggest the age profile will change by 2041, with the 55 to 64 group expected to grow by 291 people (27%) from 1,089 to 1,381. The cohorts aged 65 and older are projected to represent 55% of the total population growth, reflecting an aging population, while the 5 to 14 and 0 to 4 cohorts are projected to decrease in size.

Frequently Asked Questions - Age

What is the median age in the suburb of Mount Colah?
According to the latest data, the median age in the suburb of Mount Colah is 40 years.
How does the suburb of Mount Colah's median age compare to broader areas?
At 40 years, Mount Colah is 3 years older than the Greater Sydney average (37 years) and 2 years older than the national average (38 years).
What age groups are over-represented in the suburb of Mount Colah?
The most over-represented age group in the suburb of Mount Colah compared to the Greater Sydney region is the 45 - 54 group, making up 16.6% of the population.
What age groups are under-represented in the suburb of Mount Colah?
The most under-represented age group in the suburb of Mount Colah compared to the Greater Sydney region is the 25 - 34 group, making up 8.5% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of Mount Colah show significant variance compared to the Greater Sydney region. The most over-represented age group is 45-54 year-olds (16.6% vs 12.2%). The most under-represented age group is 25-34 year-olds (8.5% vs 16.1%).
What is the percentage of children (0-14 years) in the suburb of Mount Colah?
The percentage of children aged 0-14 years in the suburb of Mount Colah is 18.1%.
What is the percentage of older people (65+ years) in the suburb of Mount Colah?
The percentage of people aged 65 and over in the suburb of Mount Colah is 16.3%.

Data & MethodBoundaries, Sources & Method for Mount Colah

Data currency Refreshed

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

Everything is aggregated to the Suburb (SAL) 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) May 2026 3 months ago 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 May 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual May 2026 3 months ago headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to May 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Jun 2026 2 months ago headline measures · May 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Aug 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 Aug 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Dec 2025 8 months ago all 2 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 Dec 2025.
Employment ABS, DEWR, JSA Quarterly (ABS SALM) Mar 2026 5 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 this month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 last month headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Jul 2026 last month 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 — 36 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (7,816 at the 2021 Census → 8,194 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 May 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 (SAL12761). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

How do Mount Colah suburb boundaries differ from Statistical Areas?
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census/statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
Where does the data on this Mount Colah 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 Mount Colah 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 (Jun 2026), property sales & rents (Aug 2026), infrastructure projects (Dec 2025) and services & amenities (Jul 2026). Built on a Census baseline but carrying newer measures on top: population (to May 2026), age profile (to May 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.

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