Allambie Heights

An assessment of population growth drivers in Allambie Heights reveals an overall ranking slightly below national averages considering recent, and medium term trends

As of Feb 2026, the estimated population of the suburb of Allambie Heights is around 7,342. This figure reflects an increase of 25 people since the 2021 Census, which reported a population of 7,317. The change is inferred from AreaSearch's estimate of the resident population at 7,320 in June 2024, based on examination of the latest ERP data release by the ABS and validation of an additional 10 new addresses since the Census date. This level of population results in a density ratio of approximately 1,100 persons per square kilometer. Over the past decade, Allambie Heights has shown resilient growth patterns with a compound annual growth rate of 0.5%, outperforming its SA4 region. The primary driver of population growth was overseas migration, contributing around 95% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with a base year of 2021. These projections indicate an anticipated lower quartile growth for national areas, with the suburb expected to increase by 129 persons to 2041 based on aggregated SA2-level projections, reflecting a gain of approximately 4.1% in total over the 17 years.

AreaSearch assessment of residential development drivers sees a low level of activity in Allambie Heights, placing the area among the bottom 25% of areas assessed nationally

Allambie Heights has seen approximately 11 residential properties approved annually based on AreaSearch analysis of ABS building approval numbers. Over the past five financial years, from FY21 to FY25, around 55 homes were granted approval, with none recorded so far in FY26. On average, about 1.4 people moved to the area per dwelling built over these years, indicating balanced supply and demand conditions.

However, this figure has increased to 56.8 people per dwelling over the past two financial years, suggesting growing popularity and potential supply constraints. Commercial approvals totalled $16.9 million in FY26, showing balanced commercial development activity. Compared to Greater Sydney, Allambie Heights records roughly half the building activity per person, placing it among the 7th percentile of areas assessed nationally. This results in relatively constrained buyer choice and supports interest in existing properties.

New development consists predominantly of detached dwellings (85.0%) with a smaller proportion of attached dwellings (15.0%), maintaining the area's suburban identity and family home focus. The location has approximately 3720 people per dwelling approval, reflecting an established market. Future projections estimate Allambie Heights will add 300 residents by 2041 based on AreaSearch's latest quarterly estimate. Current development patterns suggest new housing supply should readily meet demand, offering favourable conditions for buyers and potentially facilitating population growth beyond current projections.

Allambie Heights has very high levels of nearby infrastructure activity, ranking in the top 10% nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 17 projects that may impact the area. Notable ones include Northern Beaches Hospital Infrastructure, Frenchs Forest Park Upgrades, a 40-unit development on Wakehurst Parkway, and The Falls Estate. 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.

The employment landscape in Allambie Heights presents a mixed picture: unemployment remains low at 3.8%, yet recent job losses have affected its comparative national standing

Allambie Heights has a highly educated workforce with significant representation in professional services. Its unemployment rate is 3.8%, as per AreaSearch's aggregation of statistical area data. As of September 2025, there are 4,034 residents employed, with an unemployment rate of 0.3% lower than Greater Sydney's rate of 4.2%.

Workforce participation in Allambie Heights is similar to Greater Sydney's at 70.0%. Census responses indicate that 50.5% of residents work from home. Dominant employment sectors include professional & technical, health care & social assistance, and education & training.

However, transport, postal & warehousing sector is under-represented with only 3.1% compared to Greater Sydney's 5.3%. The area appears to have limited local employment opportunities based on the count of Census working population versus resident population. Between September 2024 and September 2025, Allambie Heights' labour force decreased by 0.4%, while employment declined by 1.8%, leading to a rise in unemployment rate by 1.3 percentage points. In contrast, Greater Sydney saw employment grow by 2.1% during the same period. Jobs and Skills Australia's national employment forecasts from May-25 suggest that national employment is expected to expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Allambie Heights' employment mix, local employment is estimated to increase by 7.1% over five years and 14.2% over ten years, based on a simple weighting extrapolation for illustrative purposes.

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

The suburb of Allambie Heights had a median taxpayer income of $60,414 and an average of $111,469 in the latest postcode level ATO data aggregated by AreaSearch for the financial year 2023. This places it among the top percentile nationally, contrasting with Greater Sydney's median income of $60,817 and average income of $83,003 during the same period. Based on Wage Price Index growth of 8.86% since the financial year 2023, current estimates would be approximately $65,767 (median) and $121,345 (average) as of September 2025. According to Census 2021 income data, household incomes rank exceptionally at the 95th percentile ($2,890 weekly). In terms of income distribution, 35.4% of the population (2,599 individuals) fall within the $4000+ income range, contrasting with the broader area where the $1,500 - 2,999 bracket leads at 30.9%. Higher earners represent a substantial presence with 48.5% exceeding $3,000 weekly, indicating strong purchasing power within the community. High housing costs consume 16.1% of income, though strong earnings still place disposable income at the 95th percentile and the area's SEIFA income ranking places it in the 9th decile.

Allambie Heights is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

The dwelling structure in Allambie Heights, as per the latest Census, consisted of 87.1% houses and 12.9% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Allambie Heights was at 36.9%, with mortgaged dwellings at 44.0% and rented dwellings at 19.0%. The median monthly mortgage repayment in the area was $3,467, higher than Sydney metro's average of $2,427. The median weekly rent figure was recorded at $600, compared to Sydney metro's $470. Nationally, Allambie Heights' mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

Allambie Heights features high concentrations of family households, with a higher-than-average median household size

Family households constitute 79.6% of all households, including 48.2% couples with children, 22.8% couples without children, and 8.3% single-parent families. Non-family households comprise the remaining 20.4%, with lone person households at 18.9% and group households at 1.3%. The median household size is 3.0 people, larger than the Greater Sydney average of 2.7.

Educational achievement in Allambie Heights places it within the top 10% nationally, reflecting strong academic performance and high qualification levels across the community

The area's educational profile is notable regionally with university qualification rates at 37.8%, exceeding the Australian average of 30.4% and NSW's rate of 32.2%. Bachelor degrees are most prevalent at 25.5%, followed by postgraduate qualifications (8.8%) and graduate diplomas (3.5%). Vocational credentials are held by 31.3% of residents aged 15+, with advanced diplomas at 12.9% and certificates at 18.4%.

Educational participation is high, with 32.7% currently enrolled in formal education. This includes 11.8% in primary education, 9.6% in secondary education, and 5.5% pursuing tertiary education.

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

The analysis of public transport in Allambie Heights shows that there are 44 active transport stops operating within the area. These stops serve a mix of bus routes, totalling 50 individual routes. Collectively, these routes facilitate 2,019 weekly passenger trips. The accessibility of transport is rated as excellent, with residents located an average of 151 metres from the nearest transport stop. As a primarily residential area, most commuting is outward-bound. The dominant mode of transport among residents is car, at 82%, followed by bus at 7% and walking at 5%.

The average vehicle ownership per dwelling is 1.6, which is above the regional average. According to the 2021 Census, a high proportion of residents work from home, at 50.5%, which may reflect COVID-19 conditions. The service frequency averages 288 trips per day across all routes, equating to approximately 45 weekly trips per individual stop.

Allambie Heights's residents boast exceedingly positive health performance metrics with younger cohorts in particular seeing very low prevalence of common health conditions

Health outcomes data for Allambie Heights shows excellent results based on AreaSearch's assessment of mortality rates and chronic condition prevalence. Younger cohorts particularly have very low prevalence of common health conditions. The rate of private health cover is exceptionally high at approximately 71% of the total population (5,200 people), compared to 59.9% across Greater Sydney and a national average of 55.7%.

The most common medical conditions are arthritis and asthma, affecting 6.8 and 6.2% of residents respectively, while 74.0% report being completely clear of medical ailments, slightly lower than the 74.6% across Greater Sydney. The area has 19.2% of residents aged 65 and over (1,409 people), higher than the 15.4% in Greater Sydney. Health outcomes among seniors are above average but rank lower nationally than the broader population.

The level of cultural diversity witnessed in Allambie Heights was found to be slightly above average when compared nationally for a number of language and cultural background related metrics

Allambie Heights, as per data from the Australian Bureau of Statistics Census of Population and Housing conducted on the 9th of August 2016, exhibited higher cultural diversity compared to most local areas. Specifically, 13.3% of its residents spoke a language other than English at home, while 28.6% were born overseas. Christianity was the predominant religion in Allambie Heights, with 53.3% of people identifying as such.

However, Judaism showed an overrepresentation compared to Greater Sydney, with 0.4% of Allambie Heights population identifying as Jewish, against a regional average of 0.8%. Regarding ancestry, English was the most represented group at 29.2%, substantially higher than the regional average of 19.0%. Australian ancestry also had a higher representation at 25.3%, compared to 17.8% regionally. Irish ancestry stood at 9.4%. Notable divergences were observed in Welsh, French, and South African ethnic groups: Welsh was overrepresented at 1.0% (regional average 0.4%), French at 0.9% (regional average 0.5%), and South African at 0.9% (regional average 0.5%).

Allambie Heights hosts a notably older demographic compared to the national average

The median age in Allambie Heights is 43 years, which is higher than Greater Sydney's average of 37 years and exceeds the national average of 38 years. The age profile shows that those aged 45-54 are particularly prominent, making up 16.6% of the population, while those aged 25-34 make up only 6.2%. Between 2021 and present, the percentage of the population aged 15 to 24 has increased from 11.8% to 14.4%, while the percentage of those aged 5 to 14 has decreased from 16.1% to 14.4%. The percentage of those aged 35 to 44 has also dropped, from 12.9% to 11.4%. By 2041, demographic projections indicate that the age cohort of 65 to 74 is expected to increase by 188 people, from 631 to 820, a growth of 30%. Notably, those aged 65 and above will account for 89% of the total population growth in Allambie Heights. Conversely, the cohorts aged 0 to 4 and 15 to 24 are projected to experience population declines.