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 November 2025, the estimated population of Allambie Heights is around 7,483. This represents an increase of 166 people since the 2021 Census, which reported a population of 7,317. The current resident population estimate of 7,445 by AreaSearch, following examination of the latest ERP data release by the ABS in June 2024, and an additional 3 validated new addresses since the Census date, reflects this increase. This results in a population density ratio of approximately 1,121 persons per square kilometer, which is relatively consistent with averages seen across other locations assessed by AreaSearch. Over the past decade, Allambie Heights has shown resilient growth patterns with an average annual growth rate of 0.5%, outperforming its SA4 region. Overseas migration contributed significantly to population growth in recent periods, accounting for approximately 95% of overall population gains.

For future projections until 2041, AreaSearch is adopting ABS/Geoscience Australia projections 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 used. Growth rates by age group from these aggregations are applied to all areas for the years 2032 to 2041. Based on aggregated SA2-level projections, the suburb is expected to grow by 157 persons by 2041, reflecting an increase of approximately 2.4% in total over the 17-year period.

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

AreaSearch analysis of ABS building approval numbers in Allambie Heights shows approximately 13 residential properties granted approval per year over the past five financial years, totalling an estimated 66 homes. So far in FY26, two approvals have been recorded. The average population increase per dwelling built between FY21 and FY25 was 1.2 people per year. However, this figure increased to 22.7 people per dwelling over the past two financial years, indicating growing popularity and potential supply constraints. New properties are constructed at an average value of $794,000, suggesting a focus on the premium market with high-end developments.

In FY26, $81,000 in commercial approvals have been registered, predominantly reflecting residential focus. Compared to Greater Sydney, Allambie Heights shows approximately 60% of the construction activity per person, placing it among the 11th percentile nationally, indicating limited buyer options while strengthening demand for established homes. Recent construction comprises 87.0% detached houses and 13.0% townhouses or apartments, maintaining the area's traditional suburban character with a focus on family homes appealing to those seeking space. Allambie Heights has around 1488 people per approval, demonstrating its mature, established nature.

Population forecasts indicate an increase of 178 residents by 2041. With current construction levels, housing supply should meet demand adequately, 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 10% nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified 17 projects likely affecting the region. Key initiatives include Frenchs Forest Park Upgrades, Northern Beaches Hospital Infrastructure, 40-Unit Development Wakehurst Parkway, and The Falls Estate. Below is a list detailing those most relevant.

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

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AreaSearch analysis indicates Allambie Heights maintains employment conditions that align with national benchmarks

Allambie Heights has a highly educated workforce with strong representation in professional services. Its unemployment rate is 3.4%, as per AreaSearch's aggregation of statistical area data.

As of June 2025, 4,055 residents are employed, with an unemployment rate of 0.8% below Greater Sydney's rate of 4.2%. Workforce participation in Allambie Heights is 64.6%, slightly higher than Greater Sydney's 60.0%. The dominant employment sectors among residents include professional & technical services (35.1%), health care & social assistance (17.8%), and education & training (12.3%).

Transport, postal & warehousing employs only 3.1% of local workers, lower than Greater Sydney's 5.3%. Between June 2024 and June 2025, the labour force in Allambie Heights remained unchanged while employment declined by 1.1%, leading to a rise in unemployment rate by 1.1 percentage points. In contrast, Greater Sydney saw employment growth of 2.6% and labour force expansion of 2.9%. Jobs and Skills Australia's national employment forecasts from Sep-2022 project overall employment growth of 6.6% 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, assuming constant population projections for illustrative purposes.

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

Allambie Heights' median income among taxpayers was $60,414 in financial year 2022. The average income stood at $111,469 during the same period. These figures are higher than Greater Sydney's median income of $56,994 and average income of $80,856. By September 2025, estimates suggest the median income will be approximately $68,032 and the average income around $125,525, based on a 12.61% growth in wages since financial year 2022. According to Census 2021 data, Allambie Heights' household incomes rank at the 95th percentile with $2,890 weekly income. Income analysis reveals that 35.4% of residents (2,648 people) fall within the $4,000+ bracket, unlike broader area trends where 30.9% earn between $1,500 - $2,999 weekly. A substantial proportion of high earners (48.5%) have incomes above $3,000 per week, indicating strong economic capacity in the district. High housing costs consume 16.1% of income, but strong earnings place disposable income at the 95th percentile. 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

Allambie Heights' dwelling structure in its latest Census evaluation consisted of 87.1% houses and 12.9% other dwellings (semi-detached, apartments, 'other' dwellings), contrasting with Sydney metro's 57.6% houses and 42.4% other dwellings. Home ownership in Allambie Heights stood at 36.9%, with mortgaged dwellings at 44.0% and rented ones at 19.0%. The median monthly mortgage repayment was $3,467, surpassing Sydney metro's average of $3,000. Weekly rent in Allambie Heights was recorded at $600, slightly higher than Sydney metro's $592. Nationally, Allambie Heights' mortgage repayments were significantly higher than the Australian average of $1,863, with rents 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 account for the remaining 20.4%, with lone person households at 18.9% and group households comprising 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 of 37.8% among residents aged 15+ exceeding the Australian average of 30.4% and that of NSW at 32.2%. Bachelor degrees are the most prevalent at 25.5%, followed by postgraduate qualifications (8.8%) and graduate diplomas (3.5%). Trade and technical skills are prominent, with 31.3% of residents aged 15+ holding vocational credentials – advanced diplomas (12.9%) and certificates (18.4%).

Educational participation is high, with 32.7% of residents currently enrolled in formal education, including 11.8% in primary, 9.6% in secondary, and 5.5% pursuing tertiary education. Allambie Heights has 3 schools with a combined enrollment of 514 students, demonstrating above-average socio-educational conditions (ICSEA: 1084). The educational mix includes 1 primary, 1 secondary, and 1 K-12 school. Local school capacity is limited at 6.9 places per 100 residents compared to the regional average of 16.2, leading many families to travel for schooling.

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

Transport analysis shows 44 active transport stops in Allambie Heights, served by buses via 50 routes offering 1,942 weekly passenger trips. Residents' average proximity to the nearest stop is 151 meters, with service frequency averaging 277 daily trips and approximately 44 weekly trips per stop.

Service frequency averages 277 trips per day across all routes, equating to approximately 44 weekly trips per individual stop.

Allambie Heights's residents are extremely healthy with both young and old age cohorts seeing low prevalence of common health conditions

Analysis of health metrics indicates strong performance across Allambie Heights. Both younger and older age cohorts exhibit low prevalence of common health conditions.

Approximately 71% of the total population (5300 people) has private health cover, significantly higher than the national average of 55.3%. The most prevalent medical conditions are arthritis and asthma, affecting 6.8% and 6.2% of residents respectively. A majority, 74.0%, report being completely free of medical ailments, slightly lower than the Greater Sydney average of 74.7%. Allambie Heights has a higher proportion of seniors aged 65 and over, at 18.9% (1414 people), compared to Greater Sydney's 17.8%. Health outcomes among seniors are above average, mirroring the general population's health profile.

Allambie Heights 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

Allambie Heights, as per the findings, exhibited higher cultural diversity compared to most local areas, with 13.3% of its residents speaking a language other than English at home and 28.6% born overseas. Christianity was identified as the predominant religion in Allambie Heights, comprising 53.3% of the population. Notably, Judaism showed an overrepresentation, making up 0.4% of the population compared to 0.3% across Greater Sydney.

In terms of ancestry, the top three groups were English (29.2%), Australian (25.3%), and Irish (9.4%). There were also notable differences in the representation of certain ethnic groups: Welsh was overrepresented at 1.0% compared to 0.7% regionally, French at 0.9% versus 1.1%, and South African at 0.9% matching the regional figure.

Allambie Heights hosts an older demographic, ranking in the top quartile nationwide

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 16.8% of the population, while those aged 25-34 make up only 6.4%. Between 2021 and present, the proportion of people aged 15-24 has grown from 11.8% to 14.0%, while the proportion of those aged 5-14 has declined from 16.1% to 14.8%, and the proportion of those aged 35-44 has dropped from 12.9% to 11.6%. By 2041, demographic projections show that the number of people aged 85 and above is expected to rise substantially, increasing by 189 people (75%) from 254 to 444. Notably, the combined age groups of 65 and above are projected to account for 89% of total population growth. Conversely, the populations of those aged 25-34 and 45-54 are expected to decline.