Seaforth (NSW)

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

Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch, the population of Seaforth (NSW) is estimated at around 7,668 as of Feb 2026. This reflects an increase of 284 people since the 2021 Census, which reported a population of 7,384 people. The change is inferred from the resident population of 7,506 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 42 validated new addresses since the Census date. This level of population equates to a density ratio of 2,465 persons per square kilometer, placing it in the upper quartile relative to national locations assessed by AreaSearch. Seaforth's growth rate of 3.8% since the 2021 census exceeded the SA4 region's growth rate of 3.5%, marking it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration, contributing approximately 78.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as the base year. For areas not covered by this data, AreaSearch utilises NSW State Government's SA2 level projections, released in 2022 with 2021 as the base year. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. Over this period, projections indicate a decline in overall population of 66 persons by 2041. However, growth across specific age cohorts is anticipated, led by the 75 to 84 age group, which is projected to increase by 156 people.

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

AreaSearch analysis of ABS building approval numbers allocated from statistical area data shows Seaforth experienced around 26 dwelling approvals each year. Approximately 130 homes were approved between financial years FY-21 and FY-25, with an additional 19 approved in FY-26. Despite population decline during this period, housing supply has remained adequate relative to demand, maintaining a balanced market with diverse buyer options.

New properties are constructed at an average value of $965,000, indicating developers target the premium market segment. This financial year saw $9.1 million in commercial approvals, suggesting limited focus on commercial development. Compared to Greater Sydney, Seaforth has moderately higher new home approvals (49.0% above regional average per person over five years), preserving buyer options while sustaining existing property demand. However, this activity is below the national average, implying 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 offering varied price points from family homes to compact living.

This shift reflects reduced development site availability and changing lifestyle demands and affordability requirements compared to the current housing mix (currently 87.0% houses). With around 315 people per dwelling approval, Seaforth demonstrates low-density characteristics. Given stable or declining population projections, Seaforth is expected to experience reduced housing demand pressures, benefiting potential buyers.

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

Changes to local infrastructure significantly affect an area's performance. AreaSearch has identified four projects expected to impact the area: Seaforth Village Masterplan & Redevelopment, Seaforth Public School Expansion & Modernisation, Sangrado Road Residential Development, and Beaches Link Tunnel. The following list details those considered most relevant.

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Despite maintaining a low unemployment rate of 3.5%, Seaforth has experienced recent job losses, resulting in a below average employment performance ranking when compared nationally

Seaforth has a highly educated workforce with notable representation in the technology sector. Its unemployment rate is 3.5%, according to AreaSearch's aggregation of statistical area data. As of September 2025, 3,847 residents are employed while the unemployment rate is 0.7% lower than Greater Sydney's rate of 4.2%.

Workforce participation in Seaforth stands at 67.0%, slightly below Greater Sydney's 70.0%. Census responses indicate that 62.7% of residents work from home, potentially influenced by Covid-19 lockdowns. The dominant employment sectors are professional & technical, finance & insurance, and health care & social assistance. Seaforth shows strong specialization in professional & technical services with an employment share 1.6 times the regional level, while 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 Census data on working population versus resident population. Over the 12 months to September 2025, labour force levels decreased by 0.6%, alongside a 2.2% decline in employment, leading to a 1.6 percentage point rise in unemployment rate. In contrast, Greater Sydney saw employment growth of 2.1% and labour force growth of 2.4%, with unemployment rising by 0.2 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest that Seaforth's employment should increase by 7.4% over five years and 14.6% over ten years, based on industry-specific projections applied to the local employment mix.

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

Seaforth's median taxpayer income was $71,559 in financial year 2023. The average stood at $147,933. Nationally, this ranks among the top percentile. In Greater Sydney, it compares to $60,817 and $83,003 respectively. By September 2025, estimated median income is approximately $77,899, average being around $161,040, based on an 8.86% Wage Price Index growth since financial year 2023. Seaforth's household, family and personal incomes rank highly nationally, between the 93rd and 99th percentiles. The earnings profile shows that 51.1% of residents (3,918 people) fall into the $4000+ bracket, differing from the metropolitan region where the $1,500 - 2,999 category predominates at 30.9%. A substantial proportion of high earners (61.0% above $3,000/week) indicates strong economic capacity in Seaforth. Housing accounts for 14.0% of income, with residents ranking 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

In Seaforth, as per the latest Census evaluation, 86.8% of dwellings were houses with 13.1% being other types such as semi-detached homes, apartments, and others. This is compared to Sydney metropolitan area's 55.9% houses and 44.1% other dwellings. Home ownership in Seaforth stood at 39.4%, with mortgaged properties at 44.2% and rented ones at 16.5%. The median monthly mortgage repayment was $4,333, higher than Sydney metro's average of $2,427. The median weekly rent in Seaforth was recorded at $875, compared to Sydney metro's $470. Nationally, Seaforth's mortgage repayments were significantly higher than the Australian average of $1,863, with 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 compose 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 account for the remaining 13.4%, with lone person households at 11.4% and group households comprising 1.6%. The median household size is 3.1 people, which is larger than the Greater Sydney average of 2.7.

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

Seaforth's educational attainment is notably higher than national averages. Among residents aged 15+, 50.7% hold university qualifications, compared to 30.4% nationally and 32.2% in NSW. Bachelor degrees are the most common at 34.8%, followed by postgraduate qualifications (12.8%) and graduate diplomas (3.1%). Vocational pathways account for 22.4% of qualifications, with advanced diplomas at 11.2% and certificates also at 11.2%.

Educational participation is high, with 35.2% currently enrolled in formal education. This includes 12.1% in primary education, 11.6% in secondary education, and 5.8% pursuing tertiary education.

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

Public transport analysis shows 82 active stops operating in Seaforth, serving a mix of bus routes. These stops are covered by 54 individual routes, collectively offering 4,064 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 132 metres from the nearest stop. As predominantly residential, most residents commute outward. Car remains dominant at 85%, while bus usage stands at 7%. Average vehicle ownership is 1.7 per dwelling, above regional average.

In 2021 Census data (which may reflect COVID-19 conditions), 62.7% of residents work from home. Service frequency averages 580 trips daily across all routes, translating to approximately 49 weekly trips per stop.

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

Seaforth's health outcomes show exceptional results based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are very low across all age groups. Private health cover is exceptionally high at approximately 85% of the total population (6,525 people), compared to 59.9% in Greater Sydney and a national average of 55.7%.

The most common medical conditions are asthma and mental health issues, affecting 6.1 and 5.5% of residents respectively. 77.5% of residents declare themselves completely clear of medical ailments, compared to 74.6% in Greater Sydney. In Seaforth, 16.2% of residents are aged 65 and over (1,242 people). Health outcomes among seniors align with the general population, ranking nationally in line with them.

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 shows higher linguistic diversity, with 15.5% speaking a language other than English at home, compared to most local markets. Born overseas, 33.3% of Seaforth residents reflect this diversity. Christianity is the predominant religion in Seaforth, accounting for 53.3%.

Notably, Judaism is overrepresented at 0.3%, higher than Greater Sydney's 0.8%. Ancestry-wise, English (29.8%) and Australian (20.6%) are the top groups, both above regional averages of 19.0% for English and 14.7% for Australian. Irish ancestry is also prominent at 9.7%. Other ethnicities with notable representation include Welsh (0.9%), French (1.0%), and South African (1.2%).

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 makes up 17.2% of the population in Seaforth, compared to Greater Sydney, while the 25-34 cohort represents only 5.5%. This concentration of the 45-54 age group is well above the national average of 12.0%. According to post-2021 Census data, the 15 to 24 age group has grown from 12.9% to 15.9%, and the 55 to 64 cohort has increased from 12.7% to 13.8%. Conversely, the 35 to 44 cohort has declined from 12.2% to 10.6%, and the 0 to 4 age group has dropped from 5.9% to 4.7%. Population forecasts for the year 2041 indicate substantial demographic changes in Seaforth, with the 85+ age group expected to grow by 72 people, reaching 317 from 184. Notably, all of this growth will be accounted for by the combined 65+ age groups, reflecting Seaforth's aging population profile. In contrast, the 25 to 34 and 55 to 64 cohorts are expected to experience population declines.