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 May 2026, the estimated population of the suburb of Allambie Heights is around 7,316, a decrease of 1 person from the 2021 Census figure of 7,317. This change is inferred from AreaSearch's resident population estimate of 7,287 in June 2025 and 27 validated new addresses since the Census date. The population density stands at 1,096 persons per square kilometer, aligning with averages seen across locations assessed by AreaSearch. Overseas migration contributed approximately 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.

Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. By 2041, the suburb is expected to increase by 57 persons based on aggregated SA2-level projections, reflecting a gain of 0.4% in total over the 16-year period.

The level of residential development activity in Allambie Heights is very low in comparison to the average area assessed nationally by AreaSearch

Allambie Heights recorded around 12 residential properties granted approval each year based on AreaSearch analysis of ABS building approval numbers. Approximately 60 homes were approved over the past five financial years, from FY-21 to FY-25, with one approval so far in FY-26. The area has experienced population decline, suggesting new supply is keeping up with demand and offering good choice to buyers.

New homes are being built at an average expected construction cost value of $794,000, indicating a focus on the premium segment with upmarket properties. This financial year, $16.9 million in commercial development approvals have been recorded, showing steady commercial investment activity. Comparatively, Allambie Heights shows around 56% of Greater Sydney's construction activity per person and ranks among the 10th percentile nationally, suggesting relatively constrained buyer choice and supporting interest in existing properties. This is below average nationally, reflecting the area's maturity and possible planning constraints.

New building activity comprises 86.0% detached dwellings and 14.0% townhouses or apartments, preserving Allambie Heights' suburban nature with an emphasis on detached housing attracting space-seeking buyers. With around 1822 people per dwelling approval, Allambie Heights indicates a highly mature market. According to AreaSearch's latest quarterly estimate, the area is forecasted to gain 28 residents by 2041. Given current construction levels, housing supply should adequately meet demand, creating favourable conditions for buyers while potentially enabling growth that exceeds current forecasts.

Allambie Heights has very high levels of nearby infrastructure activity, ranking in the top 20% nationally

Changes in local infrastructure significantly impact an area's performance. AreaSearch has identified 16 projects that could affect this region. Notable ones include Northern Beaches Hospital, 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.

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While Allambie Heights retains a healthy unemployment rate of 3.7%, recent employment declines have impacted its national performance ranking

Allambie Heights has a highly educated workforce with strong representation in professional services. Its unemployment rate is 3.7%, as per AreaSearch's aggregation of statistical area data. As of December 2025, 3966 residents are employed while the unemployment rate stands at 4.2% below Greater Sydney's rate of 4.2%.

Workforce participation in Allambie Heights is similar to Greater Sydney's figure of 68.8%. According to Census responses, 50.5% of residents work from home, though Covid-19 lockdown impacts should be considered. Key industries for employment among residents are professional & technical services, health care & social assistance, and education & training.

However, transport, postal & warehousing has limited presence with 3.1% employment compared to the regional figure of 5.3%. The area appears to offer limited local employment opportunities, as indicated by the ratio of Census working population to resident population. Over a 12-month period ending in December 2025, labour force decreased by 0.7% and employment declined by 1.6%, leading to an unemployment rate increase of 0.9 percentage points. In contrast, Greater Sydney recorded employment growth of 2.2% during the same period. Jobs and Skills Australia's national employment forecasts from May-25 project a 6.6% expansion over five years and 13.7% over ten years. Applying these projections to Allambie Heights' employment mix suggests local employment should increase by 7.1% over five years and 14.2% over ten years, though these are simple weighted extrapolations for illustrative purposes only and do 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

The suburb of Allambie Heights had an income level among the top percentile nationally according to ATO data aggregated by AreaSearch for the financial year ended June 2023. The median income among taxpayers was $60,414 and the average income stood at $111,469, compared to figures for Greater Sydney of $60,817 and $83,003 respectively. Based on Wage Price Index growth of 10.32% since June 2023, current estimates would be approximately $66,649 (median) and $122,973 (average) as of March 2026. According to the Census conducted in August 2021, household incomes ranked exceptionally at the 95th percentile with a weekly income of $2,890. In terms of income distribution, 35.4% of individuals earned over $4,000 per week, unlike regional trends where 30.9% fell within the $1,500 - $2,999 range. The area showed considerable affluence with 48.5% earning over $3,000 per week, supporting premium retail and service offerings. High housing costs consumed 16.1% of income, but strong earnings still placed disposable income at the 95th percentile. The suburb's SEIFA income ranking placed it in the 9th decile.

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

Allambie Heights' dwellings, as per the latest Census, consisted of 87.1% houses and 12.9% other dwellings (semi-detached, apartments, 'other'). This differed from Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Allambie Heights was 36.9%, with mortgaged dwellings at 44.0% and rented ones at 19.0%. The median monthly mortgage repayment was $3,467, higher than Sydney metro's average of $2,427. Median weekly rent in Allambie Heights was $600, compared to Sydney metro's $470. Nationally, Allambie Heights' mortgage repayments were significantly higher at $3,467 vs. Australia's 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% among residents aged 15+, surpassing the Australian average of 30.4% and the NSW 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% of residents currently enrolled in formal education, including 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 currently operating. These stops serve a mix of bus routes, with a total of 50 individual routes providing service to the area. The weekly passenger trips facilitated by these routes amount to 2,019. Transport accessibility is rated as excellent in Allambie Heights, with residents typically located an average of 151 meters from their nearest transport stop. As a primarily residential area, most commuting patterns involve outward travel. The dominant mode of transportation among residents is car, used by 82% of them, while 7% use bus and 5% walk.

On average, there are 1.6 vehicles per dwelling in Allambie Heights, which is higher than the regional average. According to the 2021 Census, a high percentage of residents, specifically 50.5%, work from home, which may be influenced by COVID-19 conditions. The service frequency across all routes averages 288 trips per day, 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

AreaSearch's assessment shows outstanding health outcomes in Allambie Heights. Mortality rates and chronic condition prevalence are low, particularly in younger cohorts. Private health cover is exceptionally high at approximately 71% of the total population (5,181 people), compared to 59.9% across Greater Sydney and a national average of 55.7%.

The most common medical conditions are arthritis and asthma, impacting 6.8% and 6.2% of residents respectively. 74.0% of residents declare themselves completely clear of medical ailments, compared to 74.6% across Greater Sydney. The area has 19.1% of residents aged 65 and over (1,397 people), higher than the 15.5% 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, surveyed in June 2021, exhibited higher linguistic diversity than most local areas, with 13.3% of residents speaking a language other than English at home. Born overseas, 28.6% of the population was recorded in August 2020. Christianity dominated religious affiliation as of July 2021, comprising 53.3%.

Judaism, though small at 0.4%, was notably higher than Greater Sydney's average of 0.8%, observed in June 2021. Parental ancestry revealed English as the top group at 29.2% (compared to 19.0% regionally), Australian at 25.3% (against 17.8%), and Irish at 9.4%. Notable disparities existed for Welsh (1.0% vs 0.4%), French (0.9% vs 0.5%), and South Australian (0.9% vs 0.5%) ancestry, as of June 2021.

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

The median age in Allambie Heights is 43 years, significantly higher than Greater Sydney's average of 37 years and the national average of 38 years. The age profile shows that individuals aged 45-54 make up a substantial portion at 16.9%, while those aged 25-34 constitute a smaller proportion at 6.8%. Between 2021 and present, the population aged 15-24 has increased from 11.8% to 15.0%, and the 55-64 age group has grown from 11.1% to 12.2%. Conversely, the 5-14 age group has decreased from 16.1% to 14.4%, and the 35-44 cohort has dropped from 12.9% to 11.6%. By 2041, demographic projections indicate a significant increase in the 65-74 age cohort, expanding by 162 people to reach 806 individuals. Notably, those aged 65 and above will account for 97% of total population growth due to the area's aging demographic trend. Conversely, populations aged 25-34 and 45-54 are expected to decline.