Seaton (SA)

Seaton has seen population growth performance typically on par with national averages when looking at short and medium term trends

As of Nov 2025, the estimated population of the suburb of Seaton (SA) is around 11,044. This reflects a growth of 167 people since the 2021 Census, which reported a population of 10,877. The change is inferred from AreaSearch's estimate of resident population at 10,884 following examination of ABS ERP data release in June 2024 and an additional 155 validated new addresses since the Census date. This results in a density ratio of 2,406 persons per square kilometer, placing Seaton in the upper quartile relative to national locations assessed by AreaSearch. Overseas migration contributed approximately 95.0% of overall population gains during recent periods.

AreaSearch adopts ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022, and the SA State Government's Regional/LGA projections by age category released in 2023 based on 2021 data for areas not covered or years post-2032. Future demographic trends suggest a population increase just below the median of statistical areas across the nation, with Seaton expected to grow by 961 persons to 2041, reflecting an overall gain of 11.6% over the 17-year period.

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

AreaSearch analysis shows Seaton approved around 73 new homes annually. From FY-21 to FY-25, approximately 366 homes were approved, with another 30 in FY-26 so far. Each dwelling built attracted an average of 1.5 people over the past five financial years.

The average construction value was $439,000. This year, Seaton recorded $12.9 million in commercial development approvals. Compared to Greater Adelaide, Seaton has about three-quarters the rate of new dwelling approvals per person and ranks at the 69th percentile nationally for new dwelling approvals.

New developments consist of 75% standalone homes and 25% medium-high density housing. With around 195 people per dwelling approval, Seaton exhibits low-density characteristics. By 2041, AreaSearch projects Seaton to gain 1,279 residents. At current development rates, new housing supply should meet demand comfortably, benefiting buyers and potentially supporting population growth beyond projections.

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

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 26 projects likely to affect the area. Notable projects include Findon Energy Storage Facility, Grange Healthcare Precinct, Gleneagles Reserve Stormwater Management & Reserve Upgrade, and Findon Green Corridor. The following list details those most relevant.

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

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

Seaton has seen below average employment performance when compared to national benchmarks

Seaton's workforce comprises skilled individuals with notable representation in essential services sectors. The unemployment rate was 4.2% as of June 2025, reflecting a 3.3% employment growth over the preceding year, according to AreaSearch's statistical area data aggregation.

In June 2025, 5,875 residents were employed while the unemployment rate stood at 4.2%, slightly higher than Greater Adelaide's rate of 4.0%. Workforce participation was lower in Seaton at 58.1% compared to Greater Adelaide's 61.7%. Dominant employment sectors among residents included health care & social assistance, retail trade, and construction. Notably, transport, postal & warehousing had employment levels at 1.6 times the regional average.

Conversely, professional & technical services employed just 5.6% of local workers, lower than Greater Adelaide's 7.3%. The area appeared to offer limited local employment opportunities based on Census data comparing working population and resident population. Between June 2024 and June 2025, employment levels increased by 3.3%, while the labour force grew by 3.4%, leading to a slight rise in unemployment rate of 0.1 percentage points. In contrast, Greater Adelaide saw employment grow by 2.1% and the labour force increase by 2.1%. For future insights, Jobs and Skills Australia's national employment forecasts from Sep-22 project overall employment growth of 6.6% over five years and 13.7% over ten years. However, growth rates vary significantly across industry sectors. Applying these projections to Seaton's employment mix suggests local employment should increase by 6.4% over five years and 13.4% over ten years, though this is a simple extrapolation for illustrative purposes and does not account for localized population projections.

Income levels sit below national averages according to AreaSearch assessment

AreaSearch's latest postcode level ATO data for financial year 2022 reports Seaton's median income among taxpayers as $50,884 and average as $64,773. This is approximately average nationally, compared to Greater Adelaide's median of $52,592 and average of $64,886. Based on Wage Price Index growth of 12.83% since financial year 2022, current estimates would be approximately $57,412 (median) and $73,083 (average) as of September 2025. Census 2021 income data shows household, family and personal incomes in Seaton all fall between the 20th and 27th percentiles nationally. The data shows the $1,500 - 2,999 bracket dominates with 30.3% of residents (3,346 people), consistent with broader trends across the surrounding region showing 31.8% in the same category. Housing affordability pressures are severe, with only 81.7% of income remaining, ranking at the 18th percentile.

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

Seaton's dwelling structure, as recorded in the latest Census, consisted of 66.6% houses and 33.4% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Adelaide metro had 66.1% houses and 33.9% other dwellings. Home ownership in Seaton was at 31.4%, with mortgaged dwellings at 31.5% and rented ones at 37.1%. The median monthly mortgage repayment in the area was $1,700, below Adelaide metro's average of $1,733. The median weekly rent figure in Seaton was $310, compared to Adelaide metro's $325. Nationally, Seaton's mortgage repayments were lower than the Australian average of $1,863, while rents were substantially below the national figure of $375.

Seaton features high concentrations of lone person households, with a lower-than-average median household size

Family households account for 63.1% of all households, including 24.7% couples with children, 23.1% couples without children, and 13.9% single parent families. Non-family households make up the remaining 36.9%, with lone person households at 33.3% and group households comprising 3.5%. The median household size is 2.3 people, which is smaller than the Greater Adelaide average of 2.4.

Educational outcomes in Seaton fall within the lower quartile nationally, indicating opportunities for improvement in qualification attainment

Educational qualifications in Seaton Trail show 22.0% of residents aged 15+ have university degrees, compared to Australia's 30.4%. This indicates potential for educational development. Bachelor degrees are most common at 16.1%, followed by postgraduate qualifications (4.2%) and graduate diplomas (1.7%). Vocational credentials are also prominent, with 33.2% of residents aged 15+ holding them - advanced diplomas (9.5%) and certificates (23.7%).

A significant 24.7% of the population is actively pursuing formal education, including 8.5% in primary, 5.9% in secondary, and 4.8% in tertiary education. Educational institutions include Seaton Park Primary School and Seaton High School, serving a total of 1,148 students. The area has typical Australian school conditions (ICSEA: 988) with balanced educational opportunities. There is one primary and one secondary institution providing conventional educational provision. However, there are fewer school places per 100 residents (10.4) compared to the regional average (13.6), suggesting some students may attend schools in nearby areas.

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

Seaton has 50 active public transport stops offering a mix of train and bus services. These stops are served by 21 different routes that together facilitate 1,580 weekly passenger trips. Residents enjoy good transport accessibility, with an average distance of 213 meters to the nearest stop.

Service frequency averages 225 trips per day across all routes, equating to approximately 31 weekly trips per individual stop.

Health performance in Seaton is lower than average with prevalence of common health conditions notable across both younger and older age cohorts

Seaton faces significant health challenges, with common health conditions notably prevalent across both younger and older age cohorts.

The rate of private health cover is approximately 53% of the total population (~5,810 people), leading that of the average SA2 area. The most common medical conditions in the area are arthritis and mental health issues, impacting 9.1 and 8.3% of residents respectively. Meanwhile, 67.2% of residents declare themselves completely clear of medical ailments, compared to 68.9% across Greater Adelaide. The area has 20.5% of residents aged 65 and over (2,264 people). Health outcomes among seniors present some challenges, broadly in line with the general population's health profile.

Seaton 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

Seaton's population shows high cultural diversity, with 30.6% born overseas and 31.2% speaking a language other than English at home. Christianity is the predominant religion in Seaton, accounting for 56.5%. The 'Other' religious category is overrepresented in Seaton compared to Greater Adelaide (2.6% vs 1.8%).

For ancestry, the top groups are English (20.1%), Australian (18.6%), and Italian (16.4%), with Italians significantly more represented than regionally (16.4% vs 10.2%). Serbian (1.9%) and Polish (1.3%) also show notable overrepresentation compared to regional averages, while Greek representation is equal at 4.7%.

Seaton's median age exceeds the national pattern

The median age in Seaton is 40 years, similar to Greater Adelaide's average of 39 years but somewhat older than Australia's median age of 38 years. The 25-34 age group comprises 16.3% of Seaton's population, higher than Greater Adelaide's percentage. Conversely, the 15-24 age group makes up 10.4%, which is less prevalent compared to Greater Adelaide. Post-2021 Census data reveals that the 35 to 44 age group has grown from 12.5% to 14.2%. Meanwhile, the 45 to 54 cohort has declined from 12.3% to 11.3%. By 2041, population forecasts indicate significant demographic changes in Seaton. Notably, the 75 to 84 age group is expected to grow by 47%, reaching 1,217 people from 828. The combined 65+ age groups will account for 56% of total population growth, reflecting Seaton's aging demographic profile. In contrast, the 25-34 and 55-64 cohorts are projected to experience population declines.