Seaton (SA)

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

As of November 2025, the estimated population for the Seaton (SA) statistical area (Lv2) is around 11,632. This reflects an increase of 755 people since the 2021 Census, which reported a population of 10,877. The change was inferred from AreaSearch's estimated resident population of 11,128 in June 2024, derived from ABS ERP data release and validated new addresses since the Census date. This results in a density ratio of 2,534 persons per square kilometer, placing Seaton (SA) in the upper quartile relative to other areas assessed by AreaSearch. The area's growth rate of 6.9% since the census is within 1.8 percentage points of the state's growth rate of 8.7%. Population growth was primarily driven by overseas migration, contributing approximately 95.0% of overall population gains during recent periods.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022. For areas not covered and years post-2032, SA State Government's Regional/LGA projections by age category are adopted with adjustments made using weighted aggregation methods from LGA to SA2 levels. Based on aggregated SA2-level projections, the Seaton (SA) area is expected to increase by 965 persons to reach a total population of approximately 12,607 by 2041, reflecting a gain of 6.0% over the 17-year period.

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

Based on AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, Seaton has experienced around 79 dwellings receiving development approval each year. Over the past 5 financial years, between FY21 and FY25, approximately 396 homes were approved, with a further 54 approved in FY26 to date. On average, 1.4 people have moved to the area for each dwelling built over these years, indicating a balanced supply and demand market that supports stable conditions.

The average construction cost of new properties is $439,000, suggesting developers are targeting the premium market segment with higher-end properties. This financial year has seen $10.9 million in commercial approvals, implying balanced commercial development activity. Compared to Greater Adelaide, Seaton has 17.0% less new development per person but ranks among the 84th percentile of areas assessed nationally.

Building activity has accelerated recently, with new development consisting of 76.0% standalone homes and 24.0% medium and high-density housing, preserving the area's suburban nature while attracting space-seeking buyers. With around 115 people per dwelling approval, Seaton exhibits characteristics of a growth area. According to AreaSearch's latest quarterly estimate, Seaton is expected to grow by 695 residents through to 2041. Based on current development patterns, new housing supply should readily meet demand, offering good conditions for buyers and potentially facilitating further population growth beyond current projections.

Seaton has moderate levels of nearby infrastructure activity, ranking in the 45thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 26 projects that could impact 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.

Employment performance in Seaton has been broadly consistent with national averages

Seaton has a skilled workforce with notable representation in essential services sectors. Its unemployment rate was 4.0% as of September 2025.

Employment growth over the past year was estimated at 4.6%. The unemployment rate aligns with Greater Adelaide's rate of 3.9%, but workforce participation is lower, at 58.1% compared to Greater Adelaide's 61.7%. Major employment sectors include health care & social assistance, retail trade, and construction. Transport, postal & warehousing has particularly high concentration, with employment levels at 1.6 times the regional average.

Professional & technical services employ only 5.6% of local workers, below Greater Adelaide's 7.3%. Limited local employment opportunities are indicated by Census data comparing working population to resident population. Between September 2024 and September 2025, employment levels increased by 4.6%, labour force grew by 4.2%, and unemployment fell by 0.4 percentage points in Seaton. In contrast, Greater Adelaide saw employment rise by 3.0% and unemployment fall by 0.1 percentage points over the same period. State-level data to 25-Nov-25 shows SA employment grew by 1.19%, adding 10,710 jobs, with an unemployment rate of 4.0%. This compares favourably to the national unemployment rate of 4.3% and outpaces the national average employment growth 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. 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, based on a simple weighting extrapolation for illustrative purposes.

Income figures position the area below 75% of locations analysed nationally by AreaSearch

AreaSearch's latest postcode level ATO data for financial year 2023 indicates that Seaton had a median income of $50,884 and an average income of $64,773. This is lower than the national average. In Greater Adelaide, the median income was $54,808 and the average was $66,852. Based on Wage Price Index growth of 8.8% since financial year 2023, estimates for September 2025 would be approximately $55,362 (median) and $70,473 (average). According to Census 2021 income data, Seaton's household, family, and personal incomes all fall between the 20th and 27th percentiles nationally. The $1,500 - 2,999 bracket dominates with 30.3% of residents (3,524 people), consistent with broader trends across the surrounding region at 31.8%. Housing affordability pressures are severe in Seaton, 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

The latest Census found that 66.6% of dwellings in Seaton were houses, with the remaining 33.4% comprising semi-detached properties, apartments, and other types. This is similar to Adelaide metro's dwelling structure, which was 66.1% houses and 33.9% other dwellings. Home ownership in Seaton stood at 31.4%, with mortgaged dwellings at 31.5% and rented ones at 37.1%. The median monthly mortgage repayment in Seaton was $1,700, lower than Adelaide metro's $1,733. Weekly rent in Seaton averaged $310, compared to Adelaide metro's $325. Nationally, Seaton's mortgage repayments were below the Australian average of $1,863, and rents were substantially lower at $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 consist of 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

Seaton Trail regional benchmarks indicate that 22.0% of residents aged 15+ hold university degrees, compared to the Australian average of 30.4%. The most common qualifications are bachelor degrees at 16.1%, followed by postgraduate qualifications at 4.2% and graduate diplomas at 1.7%. Vocational credentials are held by 33.2% of residents aged 15+, with advanced diplomas accounting for 9.5% and certificates for 23.7%. Currently, 24.7% of the population is actively pursuing formal education, including 8.5% in primary education, 5.9% in secondary education, and 4.8% in tertiary education.

A substantial 24.7% of the population actively pursues formal education. This includes 8.5% in primary education, 5.9% in secondary education, and 4.8% pursuing tertiary education.

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 22 different routes that facilitate 1,584 weekly passenger trips in total. The city's transport accessibility is rated as good, with residents typically residing 213 meters from the nearest stop.

On average, there are 226 daily trips across all routes, which translates 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 (~6,119 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. Conversely, 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 (2,384 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 is more culturally diverse than most local markets, with 30.6% born overseas and 31.2% speaking a language other than English at home. Christianity is the predominant religion in Seaton, comprising 56.5% of its population. The 'Other' religious category is overrepresented in Seaton at 2.6%, compared to 1.8% across Greater Adelaide.

In terms of ancestry, the top groups are English (20.1%), Australian (18.6%), and Italian (16.4%), with Italians being substantially higher than the regional average of 10.2%. Notably, Serbians (1.9%) and Greeks (4.7%) are overrepresented in Seaton compared to regional averages of 1.3% and 4.7%, respectively.

Seaton's population is slightly older than 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 proportion. Conversely, the 15-24 cohort makes up 10.4%, less prevalent compared to Greater Adelaide. Post-2021 Census data shows that the 35-44 age group has increased from 12.5% to 14.2%. Meanwhile, the 45-54 cohort has decreased from 12.3% to 11.3%. By 2041, population forecasts indicate significant demographic changes in Seaton. Notably, the 75-84 age group is expected to grow by 39%, reaching 1,216 people from 872. The combined 65+ age groups will account for 67% of total population growth, reflecting Seaton's aging demographic profile. Conversely, the 0-4 and 55-64 cohorts are projected to experience population declines.