Seaton - Grange
Statistical Area - sa2

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

Seaton-Grange's population, as per AreaSearch's analysis, is 18,399 as of August 2025. This figure shows an increase of 898 people from the 2021 Census, which recorded a population of 17,501. The change is inferred from ABS' estimated resident population of 18,264 in June 2024 and validated new addresses since then. This results in a density ratio of 2,230 persons per square kilometer, higher than the national average assessed by AreaSearch. Seaton-Grange's growth rate of 5.1% since the census is within 1.6 percentage points of the state's (6.7%), indicating strong growth fundamentals. Overseas migration contributed approximately 95.0% to population gains recently.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For un-covered areas post-2032, State Government's Regional/LGA projections by age category are adopted and adjusted using weighted aggregation. Based on projected demographic shifts, Seaton-Grange is expected to increase by just below the national median to 2041, with an overall increase of 8.5% over 17 years, totaling 1,706 persons.

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

Seaton - Grange has averaged approximately 161 new dwelling approvals annually. The Australian Bureau of Statistics produces development approval data on a financial year basis, with 808 dwellings approved over the past five financial years from FY21 to FY25, and 55 approvals so far in FY26. On average, 1.1 new residents per year are associated with each dwelling constructed during these years. This has resulted in a balanced supply and demand scenario, maintaining stable market conditions.

The average construction cost of new properties is $439,000. In the current financial year, there have been $27.9 million in commercial approvals, indicating steady commercial investment activity. Compared to Greater Adelaide, Seaton - Grange maintains similar construction rates per capita, contributing to market stability aligned with regional patterns.

New building activity comprises 73.0% detached dwellings and 27.0% townhouses or apartments, sustaining the area's suburban identity with a concentration of family homes suitable for buyers seeking space. With around 106 people per approval, Seaton - Grange reflects a low-density area. By 2041, it is projected that Seaton - Grange will grow by 1,562 residents. At current development rates, new housing supply should comfortably meet demand, providing good conditions for buyers and potentially supporting growth beyond current population projections.

Seaton - Grange has moderate levels of nearby infrastructure activity, ranking in the 47thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 27 projects likely to affect the area. Notable ones include Findon Energy Storage Facility, Findon Residential Development, Gleneagles Reserve Stormwater Management & Reserve Upgrade, and Grange Healthcare Precinct. The following list details those most relevant.

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

The employment landscape in Seaton - Grange shows performance that lags behind national averages across key labour market indicators

Seaton-Grange has a skilled workforce with strong representation in essential services sectors. Its unemployment rate was 4.2% as of June 2025, with an estimated employment growth of 3.1% over the past year.

In June 2025, 9,404 residents were employed while the unemployment rate was 0.2% higher than Greater Adelaide's rate of 4.0%. Workforce participation was lower at 58.5%, compared to Greater Adelaide's 61.7%. Key industries for employment among residents include health care & social assistance, retail trade, and construction. The area shows significant specialization in transport, postal & warehousing with an employment share of 1.4 times the regional level.

However, health care & social assistance has a limited presence at 16.0% compared to the regional average of 17.7%. Employment opportunities locally appear limited as indicated by Census data. Over the year to June 2025, employment increased by 3.1% while labour force grew by 3.2%, leading to a rise in unemployment rate by 0.2 percentage points. By comparison, Greater Adelaide had employment growth of 2.1%. State-level data to Sep-25 shows SA employment grew by 1.06% year-on-year, with the state unemployment rate at 4.5%, matching the national rate. Jobs and Skills Australia forecasts national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Seaton-Grange's employment mix suggests local growth of approximately 6.5% over five years and 13.5% over ten years.

Income levels align closely with national averages, indicating typical economic conditions for Australian communities according to AreaSearch analysis

AreaSearch's latest postcode level ATO data for financial year 2022 shows Seaton - Grange had a median taxpayer income of $54,613 and an average of $69,520. This is above the national average. Greater Adelaide's median was $52,592 with an average of $64,886. Based on Wage Price Index growth of 10.83% since financial year 2022, current estimates for March 2025 would be approximately $60,528 (median) and $77,049 (average). Census data shows incomes in Seaton - Grange rank modestly, between the 31st and 38th percentiles. Income analysis reveals that 29.3% of locals (5,390 people) fall into the $1,500 - 2,999 income category. Housing affordability pressures are severe with only 83.7% of income remaining, ranking at the 30th percentile. The area's SEIFA income ranking places it in the 5th decile.

Seaton - Grange displays a diverse mix of dwelling types, with above-average rates of outright home ownership

Dwelling structure in Seaton-Grange, as per the latest Census, consisted of 64.6% houses and 35.5% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Adelaide metro had 66.1% houses and 33.9% other dwellings. Home ownership in Seaton-Grange was at 35.5%, with the rest being mortgaged (32.0%) or rented (32.5%). The median monthly mortgage repayment was $1,733, aligning with Adelaide metro's average. The median weekly rent was $320, compared to Adelaide metro's $325. Nationally, Seaton-Grange's mortgage repayments were lower at $1,733 against the Australian average of $1,863, and rents were substantially lower at $320 compared to the national figure of $375.

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

Family households account for 64.8% of all households, including 25.2% couples with children, 26.4% couples without children, and 11.9% single parent families. Non-family households constitute the remaining 35.2%, with lone person households at 32.2% and group households comprising 3.0%. The median household size is 2.3 people, which is smaller than the Greater Adelaide average of 2.4.

Educational attainment in Seaton - Grange aligns closely with national averages, showing typical qualification patterns and performance metrics

University qualification levels in Seaton-Grange are 26.1%, slightly below the Australian average of 30.4%. Bachelor degrees are most common at 18.3%, followed by postgraduate qualifications (5.4%) and graduate diplomas (2.4%). Vocational credentials are also prominent, with 32.5% of residents aged 15+ holding these skills, including advanced diplomas (10.5%) and certificates (22.0%).

A significant 24.0% of the population is actively pursuing formal education, which includes primary (8.4%), secondary (5.7%), and tertiary education (5.0%). Seaton-Grange has three schools with a combined enrollment of 1,869 students. The ICSEA score for these schools is 1020, indicating typical Australian school conditions with balanced educational opportunities. School places per 100 residents are lower than the regional average at 10.2 compared to 13.6, suggesting some students may attend schools in nearby areas.

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

Transport analysis indicates 87 active transport stops operating within Seaton - Grange, consisting of a mix of train and bus services. These stops are served by 37 individual routes, collectively facilitating 2,153 weekly passenger trips. Transport accessibility is rated as good, with residents typically located 202 meters from the nearest transport stop.

Service frequency averages 307 trips per day across all routes, equating to approximately 24 weekly trips per individual stop.

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

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

The rate of private health cover is high at approximately 54%, covering about 10,009 people. The most common medical conditions are arthritis, impacting 9.5% of residents, and mental health issues, affecting 8.1%. About 66.8% of residents declare themselves completely clear of medical ailments, compared to 68.9% across Greater Adelaide. The area has a higher proportion of seniors aged 65 and over at 23.2%, with 4,263 people in this age group, compared to the Greater Adelaide average of 20%. Health outcomes among seniors present some challenges, broadly aligning with the general population's health profile.

Seaton - Grange 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-Grange has a higher cultural diversity compared to most local markets, with 27.6% of its population born overseas and 24.5% speaking a language other than English at home. Christianity is the predominant religion in Seaton-Grange, accounting for 55.4% of its population. The most significant overrepresentation is seen in the 'Other' category, which comprises 1.9% of the population compared to 1.8% across Greater Adelaide.

Regarding ancestry, the top three groups are English (23.4%), Australian (20.6%), and Italian (12.8%). Notably, Serbian (1.4%) is overrepresented in Seaton-Grange compared to the regional average of 1.3%. Similarly, Polish is at 1.3%, slightly below the regional average of 1.4%. However, Greek is overrepresented at 4.2% compared to the regional average of 4.7%.

Seaton - Grange hosts an older demographic, ranking in the top quartile nationwide

The median age in Seaton - Grange is 43 years, which is significantly higher than Greater Adelaide's average of 39 years and Australia's median age of 38 years. Compared to Greater Adelaide, Seaton - Grange has a higher proportion of residents aged 65-74 (11.5%) but fewer residents aged 15-24 (9.8%). According to the 2021 Census, the population aged 35-44 grew from 12.2% to 13.8%, while the population aged 45-54 declined from 12.4% to 11.3%. By 2041, demographic projections show significant shifts in Seaton - Grange's age structure. The 75-84 age group is projected to grow by 41%, reaching 2,119 people from 1,497. Notably, the combined age groups of 65 and above will account for 64% of total population growth, indicating an aging demographic profile in the area. In contrast, both the 0-4 and 25-34 age groups are projected to decrease in number.