Seacombe Gardens

Seacombe Gardens lies within the top quartile of areas nationally for population growth performance according to AreaSearch analysis of recent, and medium to long-term trends

As of Nov 2025, the estimated population of the Seacombe Gardens statistical area (Lv2) is around 3,908. This reflects an increase of 535 people since the 2021 Census, which reported a population of 3,373. The change is inferred from the resident population of 3,708 estimated by AreaSearch following examination of the latest ERP data release by the ABS (June 2024) and an additional 43 validated new addresses since the Census date. The population density ratio is 3,947 persons per square kilometer, placing it in the top 10% of national locations assessed by AreaSearch. This high density makes land in the area a highly-sought resource. The Seacombe Gardens (SA2) experienced a growth rate of 15.9% since the 2021 Census, exceeding both the SA4 region's 7.3% and the state's growth rates, marking it as a growth leader in the region.

This growth was primarily driven by overseas migration, contributing approximately 94.0% 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, the SA State Government's Regional/LGA projections by age category are adopted, based on 2021 data and released in 2023. Looking ahead, demographic trends project an above median population growth for the area. Based on aggregated SA2-level projections, the Seacombe Gardens (SA2) is expected to grow by 826 persons to 2041, reflecting a total increase of 15.2% over the 17 years.

Recent residential development output has been above average within Seacombe Gardens when compared nationally

AreaSearch analysis of ABS building approval numbers indicates that Seacombe Gardens has recorded approximately 39 residential properties granted approval annually. Between FY-21 to FY-25, around 197 homes were approved, with an additional 19 so far in FY-26. This results in an average of 1.7 new residents per year per dwelling constructed over the past five financial years.

The supply and demand appear balanced, creating stable market conditions. New properties are constructed at an average value of $291,000. In FY-26, $2.9 million in commercial development approvals have been recorded, reflecting Seacombe Gardens' primarily residential nature. Compared to Greater Adelaide, Seacombe Gardens has 59.0% more development activity per person. This suggests greater choice for buyers and strong developer confidence in the location, which is substantially higher than nationally.

New building activity shows 55.0% detached dwellings and 45.0% townhouses or apartments, offering choices across price ranges from spacious family homes to compact options. The location has approximately 115 people per dwelling approval, indicating an expanding market. Future projections show Seacombe Gardens adding 594 residents by 2041, based on the latest AreaSearch quarterly estimate. With current construction levels, housing supply should adequately meet demand, creating favourable conditions for buyers while potentially enabling growth that exceeds current forecasts.

Seacombe Gardens has emerging levels of nearby infrastructure activity, ranking in the 32ndth percentile nationally

Three projects may significantly affect the area's performance: Oaklands Green, Marion Cultural Centre Plaza Upgrade, Flagstaff Road Upgrade, and Seaview High School Upgrade. AreaSearch has identified these as potentially impactful initiatives.

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Employment performance in Seacombe Gardens has been broadly consistent with national averages

Seacombe Gardens has a highly educated workforce with significant representation in essential services sectors. The unemployment rate was 3.9% as of September 2025.

Employment growth over the past year was estimated at 4.1%. This figure aligns with Greater Adelaide's unemployment rate of 3.9% and workforce participation rate of 61.7%. Key industries of employment among residents include health care & social assistance, retail trade, and accommodation & food. Notably, health care & social assistance has an employment level that is 1.5 times the regional average.

Conversely, professional & technical services show lower representation at 4.5% compared to the regional average of 7.3%. The area's predominantly residential nature suggests limited local employment opportunities, as indicated by the count of Census working population versus resident population. Over a 12-month period ending September 2025, employment increased by 4.1%, while labour force grew by 3.5%, resulting in a 0.6 percentage point decrease in unemployment. In comparison, Greater Adelaide saw employment grow by 3.0% and labour force expand by 2.9%, with unemployment falling by 0.1 percentage points. State-level data from 25-Nov-25 shows South Australian employment grew by 1.19% year-on-year, adding 10,710 jobs, with an unemployment rate of 4.0%. This compares favourably to the national unemployment rate of 4.3%, with SA's employment growth outpacing the national average of 0.14%. Jobs and Skills Australia's national employment forecasts from May-25 project overall employment growth of 6.6% over five years and 13.7% over ten years. However, applying these projections to Seacombe Gardens' employment mix suggests local employment should increase by 7.1% over five years and 14.8% over ten years.

Income levels sit below national averages according to AreaSearch assessment

The suburb of Seacombe Gardens had an income level below the national average according to ATO data aggregated by AreaSearch for the financial year ended 30 June 2023. The median income among taxpayers in Seacombe Gardens was $51,048, with an average income of $60,595. These figures compared to Greater Adelaide's median and average incomes of $54,808 and $66,852 respectively. Based on a Wage Price Index growth rate of 8.8% from financial year 2023 to September 2025, estimated current incomes would be approximately $55,540 (median) and $65,927 (average). According to the 2021 Census, household, family, and personal incomes in Seacombe Gardens ranked modestly, between the 30th and 31st percentiles. The largest income segment consisted of 33.5% earning between $1,500 and $2,999 weekly (1,309 residents), similar to regional levels where 31.8% fell into this bracket. Housing affordability pressures were severe in Seacombe Gardens, with only 79.6% of income remaining after housing costs, ranking at the 24th percentile.

Seacombe Gardens displays a diverse mix of dwelling types, with a higher proportion of rental properties than the broader region

Seacombe Gardens' dwellings, as per the latest Census, consisted of 57.1% houses and 43.0% other dwellings (semi-detached, apartments, 'other'). Adelaide metro had 70.8% houses and 29.2% other dwellings. Home ownership in Seacombe Gardens was 23.3%, with mortgaged dwellings at 33.0% and rented at 43.7%. The median monthly mortgage repayment was $1,672, below Adelaide metro's $1,700. Median weekly rent was $370 in Seacombe Gardens, compared to Adelaide metro's $330. Nationally, Seacombe Gardens' mortgage repayments were lower at $1,672 vs Australia's $1,863, and rents were less at $370 compared to the national figure of $375.

Seacombe Gardens features high concentrations of group households, with a lower-than-average median household size

Family households compose 63.1% of all households, including 23.2% couples with children, 23.4% couples without children, and 14.7% single parent families. Non-family households account for 36.9%, with lone person households at 29.7% and group households comprising 6.9%. The median household size is 2.3 people, smaller than the Greater Adelaide average of 2.4.

Seacombe Gardens performs slightly above the national average for education, showing competitive qualification levels and steady academic outcomes

The area's educational profile is notable regionally, with university qualification rates of 31.7% among residents aged 15+, surpassing the South Australian (SA) average of 25.7% and the SA4 region average of 28.1%. Bachelor degrees are the most prevalent at 20.7%, followed by postgraduate qualifications at 8.4% and graduate diplomas at 2.6%. Vocational credentials are also prominent, with 30.6% of residents aged 15+ holding such qualifications – advanced diplomas at 10.2% and certificates at 20.4%.

Educational participation is high, with 29.0% of residents currently enrolled in formal education, including 9.3% in tertiary education, 8.7% in primary education, and 4.7% pursuing secondary education.

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

Public transport analysis shows 14 active stops operating within Seacombe Gardens. These are mixed bus stops serviced by 30 routes providing 2,220 weekly passenger trips. Transport accessibility is rated excellent with residents typically located 180 meters from the nearest stop.

Service frequency averages 317 trips per day across all routes, equating to approximately 158 weekly trips per individual stop.

Health outcomes in Seacombe Gardens are marginally below the national average with the level of common health conditions among the general population somewhat typical, though higher than the nation's average among older cohorts

Seacombe Gardens shows below-average health indicators with common conditions typical but higher than national averages among older residents.

Private health cover stands at approximately 51%, covering about 1,991 people. Mental health issues affect 9.3% and asthma impacts 7.6% of residents. Meanwhile, 69.6% report no medical ailments compared to 68.1% in Greater Adelaide. The area has 16.1% aged 65 and over (629 people), lower than the 19.2% in Greater Adelaide. Health outcomes among seniors require more attention.

Seacombe Gardens 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

Seacombe Gardens has a high level of cultural diversity, with 30.5% of its population speaking a language other than English at home and 36.7% born overseas. Christianity is the main religion in Seacombe Gardens, comprising 37.2% of the population. Hinduism is overrepresented compared to Greater Adelaide, making up 4.8% of Seacombe Gardens' population versus 4.1%.

The top three ancestry groups are English (25.8%), Australian (21.7%), and Other (12.3%). Polish, Korean, and Filipino ethnicities are notably overrepresented in Seacombe Gardens compared to regional figures: Polish at 1.1% vs 1.1%, Korean at 1.0% vs 0.3%, and Filipino at 2.4% vs 1.2%.

Seacombe Gardens's population is younger than the national pattern

Seacombe Gardens's median age is 34 years, which is lower than Greater Adelaide's average of 39 and Australia's median of 38. Compared to Greater Adelaide, Seacombe Gardens has a higher percentage of residents aged 25-34 (20.1%) but fewer residents aged 55-64 (8.5%). This concentration of 25-34 year-olds is well above the national average of 14.5%. Between the 2021 Census and the present, the percentage of residents aged 35 to 44 has grown from 14.2% to 15.3%, while the percentage of those aged 55 to 64 has declined from 10.1% to 8.5%. By 2041, demographic modeling suggests significant changes in Seacombe Gardens's age profile. The 45 to 54 cohort is projected to grow by 30%, adding 109 residents to reach a total of 473. Meanwhile, the 65 to 74 cohort is projected to grow by a modest 3%, an increase of 11 people.