Seaforth (NSW)

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

As of Nov 2025, the estimated population for the Seaforth (NSW) statistical area (Lv2) is around 7,661, reflecting a 3.8% increase from the 2021 Census figure of 7,384 people. This growth was inferred from AreaSearch's estimation of the resident population at 7,506 in June 2024, along with an additional 30 validated new addresses since the Census date. The population density ratio is 2,463 persons per square kilometer, placing Seaforth (NSW) (SA2) in the upper quartile nationally according to AreaSearch assessments. The area's growth exceeded its SA4 region's average of 3.4%, making it a regional growth leader. Overseas migration contributed approximately 78.0% of overall population gains during recent periods. AreaSearch adopts ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as the base year.

For areas not covered by this data, NSW State Government's SA2 level projections from 2022 with a 2021 base year are used. Growth rates by age group are applied to all areas for years 2032 to 2041. By 2041, the area's population is projected to decline by 83 persons according to this methodology. However, specific age cohorts like the 85 and over group are anticipated to grow, with an increase of 153 people expected.

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

Based on AreaSearch analysis of ABS building approval numbers from statistical area data, Seaforth has experienced around 26 dwellings receiving development approval each year. Approximately 130 homes were approved over the past five financial years, from FY-21 to FY-25, with an additional 19 approved so far in FY-26. Despite a decrease in population during this period, housing supply has remained adequate relative to demand, creating a well-balanced market with good buyer choice.

New properties are constructed at an average value of $965,000, indicating that developers target the premium market segment with higher-end properties. In FY-26, there have been $9.1 million in commercial approvals, suggesting limited focus on commercial development. Compared to Greater Sydney, Seaforth shows moderately higher new home approvals, at 49.0% above the regional average per person over the five-year period, while still being below the national average, which indicates the area's established nature and potential planning limitations. New development consists of 52.0% standalone homes and 48.0% attached dwellings, with a growing mix of townhouses and apartments providing options across different price points. This reflects a considerable change from the current housing mix, which is currently 87.0% houses, likely due to reduced availability of development sites and shifting lifestyle demands and affordability requirements.

Seaforth has around 315 people per dwelling approval, indicating characteristics of a low-density area. With population projections showing stability or decline, Seaforth should see reduced housing demand pressures in the future, benefiting potential buyers.

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

Area infrastructure changes significantly influence performance. Four relevant projects were identified by AreaSearch: Seaforth Village Masterplan & Redevelopment, Seaforth Public School Expansion & Modernisation, Sangrado Road Residential Development, and Beaches Link Tunnel.

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Employment performance in Seaforth has been broadly consistent with national averages

Seaforth has a highly educated workforce with notable representation in the technology sector. Its unemployment rate is 3.5%, as per AreaSearch's aggregation of statistical area data.

As of September 2025, there are 3,844 employed residents, with an unemployment rate of 0.7% lower than Greater Sydney's 4.2%. Workforce participation stands at 63.5%, slightly higher than Greater Sydney's 60.0%. The dominant employment sectors among residents include professional & technical, finance & insurance, and health care & social assistance. Seaforth shows strong specialization in professional & technical services, with an employment share of 1.6 times the regional level.

However, health care & social assistance has limited presence, at 10.8% compared to the regional 14.1%. The area appears to offer limited local employment opportunities, as indicated by the Census working population vs resident population count. Over the 12 months to September 2025, labour force levels decreased by 0.6%, with a 2.1% employment decline, resulting in a 1.5 percentage point rise in unemployment rate. In comparison, Greater Sydney recorded employment growth of 2.1%, labour force growth of 2.4%, and an unemployment rate increase of 0.2 percentage points. State-level data from NSW to 25-Nov shows employment contracted by 0.03% (losing 2,260 jobs), with the state unemployment rate at 3.9%. Nationally, the unemployment rate stands 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 Seaforth's employment mix suggests local employment should increase by 7.4% over five years and 14.6% over ten years, though this is a simple weighting extrapolation for illustrative purposes and does not account for localized population projections.

The economic profile demonstrates exceptional strength, placing the area among the top 10% nationally based on comprehensive AreaSearch income analysis

AreaSearch reports that Seaforth had a median taxpayer income of $71,559 and an average income of $147,933 in the financial year 2023. Nationally, these figures place Seaforth in the top percentile. Compared to Greater Sydney's median of $60,817 and average of $83,003, Seaforth's incomes are higher. Factoring in an 8.86% Wage Price Index growth since financial year 2023, estimated incomes for September 2025 would be approximately $77,899 (median) and $161,040 (average). Census data shows Seaforth's household, family, and personal incomes rank between the 93rd and 99th percentiles nationally. The earnings profile indicates that 51.1% of residents earn over $4,000 per week (3,914 people), differing from Greater Sydney where the dominant category is $1,500 - $2,999 at 30.9%. A significant proportion of high earners (61.0% above $3,000/week) suggests strong economic capacity in Seaforth. Housing expenses consume 14.0% of income, and residents rank within the 99th percentile for disposable income. The area's SEIFA income ranking places it in the 10th decile.

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

Seaforth's dwelling structure, as per the latest Census, consisted of 86.8% houses and 13.1% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Sydney metro's 36.7% houses and 63.3% other dwellings. Home ownership in Seaforth stood at 39.4%, with the rest being mortgaged (44.2%) or rented (16.5%). The median monthly mortgage repayment was $4,333, higher than Sydney metro's average of $3,800. Median weekly rent was $875, compared to Sydney metro's $720. Nationally, Seaforth's mortgage repayments were significantly higher at $1,863 and rents substantially above the national figure of $375.

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

Family households account for 86.6% of all households, including 53.9% couples with children, 23.5% couples without children, and 8.9% single parent families. Non-family households comprise the remaining 13.4%, with lone person households at 11.4% and group households making up 1.6%. The median household size is 3.1 people, larger than the Greater Sydney average of 2.5.

Seaforth demonstrates exceptional educational outcomes, ranking among the top 5% of areas nationally based on AreaSearch's comprehensive analysis of qualification and performance metrics

In Seaforth, residents aged 15+ have a notably higher proportion of university qualifications at 50.7%, compared to the national average of 30.4% and the NSW average of 32.2%. This educational advantage is largely due to bachelor degrees held by 34.8% of residents, followed by postgraduate qualifications (12.8%) and graduate diplomas (3.1%). Vocational pathways are also pursued, with advanced diplomas accounting for 11.2% and certificates for another 11.2%. Educational participation is high in Seaforth, with 35.2% of residents currently enrolled in formal education.

This includes primary education (12.1%), secondary education (11.6%), and tertiary education (5.8%).

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

Seaforth has 84 active public transport stops, all of which are bus stops. These stops are served by 54 different routes that together facilitate 4,064 weekly passenger trips. The accessibility of these transport services is rated as excellent, with residents on average located just 132 meters from the nearest stop.

On an average day, there are 580 trips across all routes, which equates to approximately 48 weekly trips per individual stop.

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

Seaforth exhibits excellent health outcomes, with a very low prevalence of common health conditions across all age groups. The rate of private health cover is exceptionally high at approximately 85% of the total population (6,519 people), compared to the national average of 55.7%.

The most prevalent medical conditions in the area are asthma and mental health issues, affecting 6.1 and 5.5% of residents respectively. A significant majority, 77.5%, report being completely free from medical ailments, closely matching the Greater Sydney average of 77.4%. As of a recent date, 15.8% of Seaforth's population is aged 65 and over (1,210 people). Seniors in Seaforth enjoy strong health outcomes, largely aligning with those of the general population.

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

Seaforth's population showed higher linguistic diversity, with 15.5% speaking a language other than English at home. Born overseas, 33.3% of Seaforth residents were born outside Australia. Christianity was the dominant religion, practiced by 53.3%.

Judaism, at 0.3%, was slightly overrepresented compared to Greater Sydney's 0.4%. The top three ancestry groups were English (29.8%), Australian (20.6%), and Irish (9.7%). Notable differences in ethnic group representation included Welsh (0.9% vs regional 0.9%), French (1.0% vs 1.4%), and South African (1.2% vs 1.1%).

Seaforth's median age exceeds the national pattern

The median age in Seaforth is 42 years, which is significantly higher than Greater Sydney's average of 37 years and Australia's national average of 38 years. The 45-54 age group constitutes 17.6% of the population in Seaforth, compared to Greater Sydney, while the 25-34 cohort makes up only 5.8%. This concentration of people aged 45-54 is notably higher than the national average of 12.1%. According to data from the 2021 Census, the 15-24 age group has increased from 12.9% to 15.4% of the population in Seaforth. Conversely, the 35-44 age group has decreased from 12.2% to 10.7%. Population forecasts for the year 2041 indicate substantial demographic changes for Seaforth. The 85+ age group is projected to grow by 85%, reaching 312 people from 168, leading the demographic shift. Notably, all population growth in this period will be accounted for by the combined 65+ age groups, reflecting the area's aging demographic profile. In contrast, the 55-64 and 25-34 cohorts are expected to experience population declines.