Asquith - Mount Colah

Population growth drivers in Asquith - Mount Colah are strong compared to national averages based on AreaSearch's ranking of recent, and medium to long-term trends

Asquith - Mount Colah's population is approximately 23,474 as of November 2025. This figure represents an increase of 1,417 people since the 2021 Census, which recorded a population of 22,057. The growth was inferred from the estimated resident population of 23,315 in June 2024 and an additional 264 validated new addresses post-Census. This results in a population density of 676 persons per square kilometer. Asquith - Mount Colah's growth rate of 6.4% since the 2021 Census exceeds both its SA3 area (4.3%) and SA4 region, indicating it as a growth leader. Overseas migration contributed approximately 55.7% to the overall population gains in recent periods.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022. For areas not covered by this data, NSW State Government's SA2 level projections released in 2022 with a base year of 2021 are utilized. Growth rates by age group from these aggregations are applied to all areas for the years 2032 to 2041. According to population projections, above median growth is expected nationally, with Asquith - Mount Colah projected to increase by 3,124 persons to reach a total of approximately 26,598 by 2041, reflecting a 12.4% overall increase over the 17-year period.

AreaSearch assessment of residential development activity positions Asquith - Mount Colah among the top 25% of areas assessed nationwide

Asquith - Mount Colah has granted around 89 residential property approvals annually. Over the past five financial years, from FY-21 to FY-25, a total of 448 homes were approved, with an additional 10 approved so far in FY-26. This results in an average of 4.9 people moving to the area per dwelling built over these years.

The demand for housing significantly outpaces supply, which typically increases competition among buyers and puts upward pressure on prices. New homes are being constructed at an average value of $428,000, below the regional average, suggesting more affordable housing options. In FY-26 alone, commercial development approvals have reached $36.3 million, indicating strong commercial development momentum in the area compared to Greater Sydney. Over the past five years, Asquith - Mount Colah has shown 48.0% more development per person than the regional average. The composition of new building activity is 47.0% detached houses and 53.0% medium and high-density housing, representing a shift from the area's existing housing stock, which is currently 74.0% houses.

The estimated population count in Asquith - Mount Colah per dwelling approval is 386 people. According to AreaSearch's latest quarterly estimate, the area is forecasted to gain 2,918 residents by 2041. Building activity appears to be keeping pace with these growth projections, though heightened competition among buyers may arise as the population grows.

Asquith - Mount Colah has very high levels of nearby infrastructure activity, ranking in the top 20% nationally

Changes in local infrastructure significantly affect an area's performance. AreaSearch has identified nine projects that could impact this region. Notable ones are Hornsby Park's transformation from a quarry to parklands, Mount Colah Station's upgrade, Arlington Heights Estate development, and Berowra Valley National Park's northern extension. The following list details those most likely to be relevant.

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.

AreaSearch assessment indicates Asquith - Mount Colah faces employment challenges relative to the majority of Australian markets

Asquith - Mount Colah has a highly educated workforce with significant representation in the technology sector. As of June 2025, its unemployment rate is 7.5%.

The area's employment figures show that 12,479 residents are working while the unemployment rate is 3.3% higher than Greater Sydney's rate of 4.2%, indicating potential improvement needed. Workforce participation in Asquith - Mount Colah stands at 68.7%, surpassing Greater Sydney's 60.0%. Employment is concentrated in health care & social assistance, professional & technical, and education & training sectors. Notably, the area specializes in education & training with an employment share 1.3 times the regional level.

Conversely, transport, postal & warehousing shows lower representation at 3.4% compared to the regional average of 5.3%. Local employment opportunities appear limited as indicated by the Census working population count versus resident population. Between June 2024 and June 2025, labour force levels decreased by 0.3%, alongside a 3.4% employment decline, causing unemployment rate to rise by 3.0 percentage points. In contrast, Greater Sydney experienced employment growth of 2.6% and labour force growth of 2.9%, with a 0.3 percentage point increase in unemployment rate. State-level data from Nov-25 shows NSW employment contracted by 0.03%, losing 2,260 jobs, while the state unemployment rate was at 3.9%. Nationally, the unemployment rate stood at 4.3%. Jobs and Skills Australia's national employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years. Applying these projections to Asquith - Mount Colah's employment mix suggests local employment should increase by 7.2% over five years and 14.7% over ten years, though this is a simple extrapolation for illustrative purposes and does not account for localized population projections.

Income metrics indicate excellent economic conditions, with the area achieving higher performance than 75% of national locations assessed by AreaSearch

AreaSearch's latest postcode-level ATO data for financial year 2022 shows Asquith - Mount Colah SA2 had a median taxpayer income of $59,048 and an average of $75,353. Nationally, these figures are high, compared to Greater Sydney's median of $56,994 and average of $80,856. Based on Wage Price Index growth of 12.61% since financial year 2022, estimated incomes as of September 2025 would be approximately $66,494 (median) and $84,855 (average). Census 2021 income data ranks Asquith - Mount Colah's household, family, and personal incomes highly, between the 79th and 89th percentiles nationally. Income analysis reveals that 31.9% of residents earn $1,500-$2,999 weekly (7,488 individuals), similar to the metropolitan region at 30.9%. A substantial proportion, 40.1%, earns above $3,000 weekly, indicating strong economic capacity. High housing costs consume 15.7% of income, but strong earnings place disposable income at the 88th percentile nationally. The area's SEIFA income ranking places it in the 9th decile.

Asquith - Mount Colah is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

In Asquith - Mount Colah, as per the latest Census data, 74.4% of dwellings were houses, with the remaining 25.6% consisting of semi-detached homes, apartments, and other types. This is compared to Sydney metropolitan areas where 61.4% of dwellings are houses and 38.6% are other dwellings. Home ownership in Asquith - Mount Colah stood at 31.7%, similar to the Sydney metro average, with mortgaged properties making up 47.4% and rented ones accounting for 20.9%. The median monthly mortgage repayment in the area was $2,550, higher than the Sydney metro average of $2,500. Weekly rent median was recorded at $500, compared to Sydney's $480. Nationally, Asquith - Mount Colah's mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

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

Family households account for 82.4% of all households, including 46.7% couples with children, 25.0% couples without children, and 9.8% single parent families. Non-family households constitute the remaining 17.6%, with lone person households at 15.9% and group households comprising 1.7%. The median household size is 2.9 people, larger than the Greater Sydney average of 2.7.

Educational achievement in Asquith - Mount Colah places it within the top 10% nationally, reflecting strong academic performance and high qualification levels across the community

The area has university qualification rates of 43.1%, which is significantly lower than the SA4 region average of 57.1%. Bachelor degrees are the most common at 27.7%, followed by postgraduate qualifications (11.9%) and graduate diplomas (3.5%). Vocational credentials are also prevalent, with 29.5% of residents aged 15+ holding them, including advanced diplomas (12.2%) and certificates (17.3%). Educational participation is high, with 31.5% of residents currently enrolled in formal education.

This includes 10.5% in primary education, 8.6% in secondary education, and 5.8% pursuing tertiary education.

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

Public transport analysis shows that Asquith - Mount Colah has 189 active transport stops. These comprise a mix of train and bus services. There are 34 individual routes operating in total, collectively providing 2,475 weekly passenger trips.

Transport accessibility is rated as excellent, with residents typically located 146 meters from the nearest stop. Service frequency averages 353 trips per day across all routes, equating to approximately 13 weekly trips per individual stop.

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

Health outcomes data shows outstanding results across Asquith - Mount Colah. The prevalence of common health conditions is very low across all age groups.

Approximately 57% of the total population (~13,403 people) has private health cover, compared to 60.8% in Greater Sydney. Asthma and mental health issues are the most common medical conditions, impacting 7.4 and 7.0% of residents respectively. About 73.5% of residents declare themselves completely clear of medical ailments, compared to 74.0% across Greater Sydney. The area has 15.6% of residents aged 65 and over (3,664 people), which is lower than the 17.1% in Greater Sydney. Health outcomes among seniors are particularly strong, broadly in line with the general population's health profile.

Asquith - Mount Colah was found to be more culturally diverse than the vast majority of local markets in Australia, upon assessment of a range of language and cultural background related metrics

Asquith-Mount Colah has a high level of cultural diversity, with 30.1% of its population speaking a language other than English at home and 37.1% born overseas. Christianity is the main religion in Asquith-Mount Colah, making up 46.4% of the population. Notably, Judaism comprises 0.4% of the population, which is similar to the regional average of 0.4%.

The top three ancestry groups are English (23.5%), Australian (21.6%), and Other (12.8%). Korean (1.3%) and Russian (0.6%) are overrepresented compared to Greater Sydney's averages of 2.0% and 0.6%, respectively, while Chinese is underrepresented at 7.4% compared to the regional average of 11.6%.

Asquith - Mount Colah's population aligns closely with national norms in age terms

The median age in Asquith - Mount Colah is 39 years, which is higher than Greater Sydney's average of 37 years and close to Australia's national average of 38 years. The 45-54 age group is notably over-represented at 15.9% locally compared to the Greater Sydney average, while the 25-34 age group is under-represented at 9.1%. According to post-2021 Census data, the 15-24 age group has increased from 12.0% to 13.3%, and the 45-54 cohort has risen from 14.8% to 15.9%, while the 25-34 age group has declined from 10.9% to 9.1%. Population forecasts for 2041 indicate significant demographic changes in Asquith - Mount Colah, with the 55-64 age group expected to grow by 29% (766 people), reaching 3,417 from 2,650. The demographic aging trend continues as residents aged 65 and older represent 58% of anticipated growth. Conversely, the 5-14 and 0-4 age groups are expected to experience population declines.