Seaford Heights

Seaford Heights lies within the top 10% of areas nationally in terms of population growth performance according to AreaSearch analysis of short and medium-term trends

The population of the Seaford Heights statistical area (Lv2) is estimated to be around 1,702 as of November 2025. This reflects an increase of 623 people since the 2021 Census, which reported a population of 1,079 people. The change is inferred from the resident population of 1,591 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 336 validated new addresses since the Census date. This level of population equates to a density ratio of 983 persons per square kilometer. The area's population growth rate of 57.7% since the 2021 census exceeded that of the SA3 area (6.2%) and the SA4 region, marking it as a growth leader in the region. Population growth was primarily driven by interstate migration contributing approximately 81.0% 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, and years post-2032, SA State Government's Regional/LGA projections by age category released in 2023 based on 2021 data are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Looking at population projections moving forward, an above median population growth is projected for the area, with an expected increase of 288 persons to 2041 based on aggregated SA2-level projections, reflecting a decrease of 8.0% in total over the 17 years.

AreaSearch assessment of residential development activity positions Seaford Heights among the top 25% of areas assessed nationwide

AreaSearch analysis of ABS building approval numbers in Seaford Heights shows approximately 79 dwelling approvals annually over the past five financial years, totalling around 399 homes. As of FY26, 25 approvals have been recorded. The average population growth per dwelling built between FY21 and FY25 was 0.8 people per year. New construction has matched or outpaced demand, with new properties constructed at an average value of $302,000.

There were $2.7 million in commercial approvals this financial year. Compared to Greater Adelaide, Seaford Heights had 1453.0% higher new home approvals per person as of FY26. Recent construction comprised 92.0% detached houses and 8.0% medium and high-density housing. The area has approximately 22 people per dwelling approval. Population is expected to remain stable or decline, potentially reducing pressure on housing.

With population expected to remain stable or decline, Seaford Heights should see reduced pressure on housing, potentially creating opportunities for buyers.

Seaford Heights has emerging levels of nearby infrastructure activity, ranking in the 20thth percentile nationally

No factor impacts a region's performance more than modifications to local infrastructure, major projects, and planning initiatives. AreaSearch has identified zero projects that could potentially affect this area. Notable projects include Main South Road Duplication Stage 1 - Aldinga Project, Victor Harbor Road Duplication, Sunset Residential Development, and Majors Road Interchange, with the following list outlining those most pertinent.

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

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AreaSearch analysis of employment trends sees Seaford Heights performing better than 90% of local markets assessed across Australia

Seaford Heights has a skilled workforce with significant representation in essential services sectors. Its unemployment rate was 0.4% as of September 2025, with an estimated employment growth of 4.7% over the past year.

This is based on AreaSearch's aggregation of statistical area data. The unemployment rate in Seaford Heights was 3.6%, lower than Greater Adelaide's rate of 3.9%. Workforce participation was high at 83.3%, compared to Greater Adelaide's 61.7%. Dominant employment sectors among residents include health care & social assistance, retail trade, and construction.

Retail trade has a particularly strong presence with an employment share of 1.4 times the regional level. Professional & technical services have limited presence at 3.8% compared to the regional average of 7.3%. Employment levels increased by 4.7% in Seaford Heights during the year to September 2025, while labour force increased by 4.5%, causing the unemployment rate to fall by 0.1 percentage points. In comparison, Greater Adelaide recorded employment growth of 3.0%, labour force growth of 2.9%, with a similar decrease in unemployment. State-level data from 25-Nov shows SA employment grew by 1.19% year-on-year, with the state unemployment rate at 4.0%. National employment forecasts suggest an expansion of 6.6% over five years and 13.7% over ten years. Applying these projections to Seaford Heights' employment mix suggests local employment should increase by 6.5% over five years and 13.5% over ten years, though these are simple extrapolations for illustrative purposes only.

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

The suburb of Seaford Heights had an extremely high national income level according to ATO data aggregated by AreaSearch for financial year 2023. The median income among taxpayers was $68,945 and the average income stood at $85,216. These figures compared to Greater Adelaide's median of $54,808 and average of $66,852 respectively. Based on Wage Price Index growth of 8.8% since financial year 2023, current estimates for September 2025 would be approximately $75,012 (median) and $92,715 (average). Census data revealed household, family and personal incomes all ranked highly in Seaford Heights, between the 76th and 85th percentiles nationally. The income bracket of $1,500 - 2,999 captured 51.7% of the community (879 individuals), consistent with broader trends across the metropolitan region showing 31.8% in the same category. High housing costs consumed 16.3% of income, yet strong earnings placed disposable income at the 75th percentile. The area's SEIFA income ranking placed it in the 6th decile.

Seaford Heights is characterized by a predominantly suburban housing profile, with ownership patterns similar to the broader region

The dwelling structure in Seaford Heights, as per the latest Census, consisted of 94.9% houses and 5.1% other dwellings. In comparison, Adelaide metro had 89.2% houses and 10.7% other dwellings. Home ownership in Seaford Heights was at 10.2%, with mortgaged dwellings at 67.0% and rented ones at 22.8%. The median monthly mortgage repayment in the area was $1,733, higher than Adelaide metro's average of $1,452. The median weekly rent figure for Seaford Heights was $380, compared to Adelaide metro's $314. Nationally, Seaford Heights' mortgage repayments were lower than the Australian average of $1,863, while rents exceeded the national figure of $375.

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

Family households comprise 81.4% of all households, including 37.2% couples with children, 33.6% couples without children, and 9.2% single parent families. Non-family households constitute the remaining 18.6%, with lone person households at 16.8% and group households comprising 1.7%. The median household size is 2.6 people, larger than the Greater Adelaide average of 2.5.

Educational achievement in Seaford 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 25.0% of residents aged 15+, surpassing the SA3 area average of 18.9%. Bachelor degrees are most prevalent at 17.5%, followed by postgraduate qualifications (4.7%) and graduate diplomas (2.8%). Vocational credentials are prominent, with 41.8% of residents aged 15+ holding such qualifications – advanced diplomas at 9.2% and certificates at 32.6%.

Educational participation is high, with 26.7% of residents currently enrolled in formal education. This includes 10.4% in primary education, 5.1% in tertiary education, and 4.8% pursuing secondary education.

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

Seaford Heights has two active public transport stops operating within its boundaries. These stops serve a mix of bus routes, with four individual routes in total providing 145 weekly passenger trips combined. The accessibility of these transport services is rated as good, with residents on average located 395 meters from the nearest stop.

Across all routes, service frequency averages 20 trips per day, resulting in approximately 72 weekly trips per individual stop.

Seaford Heights's residents boast exceedingly positive health performance metrics with a fairly standard level of common health conditions seen across both young and old age cohorts

Health outcomes data shows excellent results throughout Seaford Heights, with typical health conditions seen across both young and elderly populations. Private health cover is exceptionally high at approximately 61% of the total population (1,031 people), compared to 49.1% in Greater Adelaide.

The most common medical conditions are asthma and mental health issues, affecting 7.8 and 7.5% of residents respectively, while 79.0% report no medical ailments, compared to 62.9% in Greater Adelaide. Only 4.0% of residents are aged 65 and over (68 people), lower than the 21.0% in Greater Adelaide.

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

Seaford Heights had a higher than average cultural diversity, with 12.3% of its residents speaking a language other than English at home and 26.6% born overseas. Christianity was the predominant religion in Seaford Heights, comprising 31.4% of its population. Notably, the 'Other' religious category made up 1.9%, compared to 0.7% across Greater Adelaide.

In terms of ancestry, the top groups were English (36.7%), Australian (25.6%), and Other (6.5%). Some ethnic groups showed notable differences: Croatian was overrepresented at 1.0% in Seaford Heights versus 0.3% regionally, Sri Lankan at 0.5% versus 0.1%, and Dutch at 1.6% versus 1.7%.

Seaford Heights hosts a very young demographic, ranking in the bottom 10% of areas nationwide

Seaford Heights has a median age of 29 years, which is lower than Greater Adelaide's average of 39 years and the Australian median of 38 years. Compared to Greater Adelaide, Seaford Heights has a higher proportion of residents aged 25-34 (31.6%) but fewer residents aged 65-74 (2.4%). This concentration of 25-34 year-olds is significantly higher than the national average of 14.5%. Between 2021 and present, the proportion of residents aged 45-54 has decreased from 10.5% to 8.1%. By 2041, demographic modeling suggests significant changes in Seaford Heights' age profile. The number of residents aged 85 and above is projected to increase by 8 people (62%), from 13 to 22. Notably, the combined age groups of 65 and above will account for all population growth in the area, reflecting its aging demographic trend. Conversely, population declines are projected for the age cohorts of 65-74 and 45-54 years.