Seaton - Grange

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 of February 2026, is approximately 19,091. This figure represents an increase of 1,590 people since the 2021 Census, which recorded a population of 17,501. The growth is inferred from ABS estimates: 18,255 residents in June 2024 and 351 new addresses validated after the Census date. This results in a density ratio of 2,314 persons per square kilometer, exceeding national averages assessed by AreaSearch. Seaton-Grange's 9.1% growth since the 2021 census surpassed the state average of 9%. Overseas migration accounted for approximately 95% of population gains during recent periods.

AreaSearch adopts 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, the SA State Government's Regional/LGA projections by age category are used, based on 2021 data and adjusted employing weighted aggregation from LGA to SA2 levels. Projected demographic shifts indicate a population increase just below the median of national areas. By 2041, Seaton-Grange is expected to expand by 1,706 persons, reflecting an overall increase of 4.6% over the 17 years.

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 per year over the past five financial years, totalling 808 homes. As of FY26117 approvals have been recorded. The average number of new residents per year per dwelling constructed in the area between FY21 and FY25 was 1.1. This suggests a balanced supply and demand dynamic, contributing to stable market conditions.

The average construction value for new properties is $328,000. In terms of commercial approvals, there have been $27.9 million in FY26, indicating steady investment activity. Compared to Greater Adelaide, Seaton - Grange maintains similar construction rates per person, supporting market stability aligned with regional trends.

The current building activity shows 73.0% detached dwellings and 27.0% townhouses or apartments, reflecting the area's suburban identity with a focus on family homes. With approximately 106 people per approval, Seaton - Grange is considered a developing area. According to AreaSearch's latest quarterly estimate, the area is expected to grow by 870 residents by 2041. Given current development rates, new housing supply should comfortably meet demand, providing favourable conditions for buyers and potentially supporting growth beyond current population projections.

Seaton - Grange has limited levels of nearby infrastructure activity, ranking in the 19thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified 29 projects likely affecting the region. Notable initiatives include Findon Energy Storage Facility, Gleneagles Reserve Stormwater Management & Reserve Upgrade, Grange Healthcare Precinct, and Fulham Gardens Shopping Centre Redevelopment. The following list details those most relevant.

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

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AreaSearch analysis indicates Seaton - Grange maintains employment conditions that align with national benchmarks

Seaton - Grange has a skilled workforce with essential services sectors well represented. The unemployment rate is 3.9%, having seen an estimated employment growth of 4.4% in the past year up to September 2025. As of that date, 9,438 residents are employed, with an unemployment rate in line with Greater Adelaide's at 3.9%.

However, workforce participation is lower, at 63.6% compared to Greater Adelaide's 66.4%. According to Census responses, only 10.6% of residents work from home. The key industries of employment are health care & social assistance, retail trade, and construction. Seaton - Grange shows strong specialization in transport, postal & warehousing, with an employment share 1.4 times the regional level.

Conversely, health care & social assistance has limited presence at 16.0% compared to the regional average of 17.7%. The area appears to offer limited local employment opportunities, as indicated by the count of Census working population versus resident population. Between September 2024 and September 2025, employment increased by 4.4%, while labour force grew by 4.0%, causing a fall in unemployment rate by 0.3 percentage points. By comparison, Greater Adelaide recorded employment growth of 3.0% and labour force growth of 2.9%, with unemployment falling by 0.1 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest that over five years, national employment is forecast to expand by 6.6%. Over ten years, this growth is projected at 13.7%. Applying these projections to Seaton - Grange's employment mix suggests local employment should increase by 6.5% over five years and 13.5% over ten years, based on a simple weighting extrapolation for illustrative purposes.

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 2023 shows Seaton - Grange SA2 had a median income among taxpayers of $56,798 and an average of $71,877. This is higher than the national average. Greater Adelaide had a median income of $54,808 and an average of $66,852 in the same period. Based on Wage Price Index growth of 8.8% since financial year 2023, estimated incomes as of September 2025 would be approximately $61,796 (median) and $78,202 (average). Census data indicates household, family, and personal incomes in Seaton - Grange rank modestly, between the 30th and 38th percentiles. Income analysis reveals that 29.3% of locals (5,593 people) fall into the $1,500 - $2,999 category, similar to the surrounding region where 31.8% occupy this range. 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

Seaton-Grange's dwellings, as per the latest Census, consisted of 64.6% houses and 35.5% other dwellings (semi-detached, apartments, 'other' dwellings). Adelaide metro had 75.2% houses and 24.9% other dwellings. Home ownership in Seaton-Grange was 35.5%, with mortgaged dwellings at 32.0% and rented ones at 32.5%. The median monthly mortgage repayment was $1,733, higher than Adelaide metro's $1,562. Median weekly rent was $320, equal to Adelaide metro's figure. Nationally, Seaton-Grange's mortgage repayments were lower than the Australian average of $1,863, and rents were substantially below 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 make up 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 2.5.

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

University qualification levels in Seaton-Grange stand at 26.1%, slightly below the Australian average of 30.4%. Bachelor degrees are most prevalent at 18.3%, followed by postgraduate qualifications (5.4%) and graduate diplomas (2.4%). Vocational credentials are held by 32.5% of residents aged 15 and above, with advanced diplomas at 10.5% and certificates at 22.0%.

A significant 24.0% of the population is actively engaged in formal education, including 8.4% in primary education, 5.7% in secondary education, and 5.0% pursuing tertiary education.

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

Seaton-Grange has 86 active public transport stops offering a mix of train and bus services. These stops are served by 38 individual routes, facilitating 2,157 weekly passenger trips in total. The area's transport accessibility is rated as good, with residents typically living 203 meters from the nearest stop. As primarily residential, most commutes are outward-bound, with cars being the dominant mode at 87%. On average, there are 1.2 vehicles per dwelling, below the regional norm. According to the 2021 Census, only 10.6% of residents work from home, which may be influenced by COVID-19 conditions.

Across all routes, service frequency averages 308 trips daily, equating to approximately 25 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 based on AreaSearch's assessment of mortality rates and chronic condition prevalence. The prevalence of common health conditions is notable across both younger and older age cohorts.

The rate of private health cover is approximately 55% of the total population, which amounts to around 10,480 people. This compares to a rate of 52.7% across Greater Adelaide. The most common medical conditions in the area are arthritis and mental health issues, impacting 9.5 and 8.1% of residents respectively. Conversely, 66.8% of residents declare themselves as completely clear of medical ailments compared to 67.9% across Greater Adelaide. Health outcomes among the working-age population are broadly typical. The area has 23.5% of residents aged 65 and over, which amounts to 4,488 people. This is higher than the rate of 19.3% in Greater Adelaide. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.

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

Seaton-Grange has a higher cultural diversity than 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 category 'Other' is slightly overrepresented compared to Greater Adelaide, with 1.9% versus 1.8%.

In terms of ancestry, the top three groups are English (23.4%), Australian (20.6%), and Italian (12.8%), which is significantly higher than the regional average of 5.2%. Notably, Serbian (1.4%) and Polish (1.3%) populations are overrepresented compared to Greater Adelaide's averages of 0.4% and 1.0%, respectively. Additionally, Greek ancestry is also notably higher at 4.2% versus the regional average of 2.0%.

Seaton - Grange's median age exceeds the national pattern

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 percentage of residents aged 65-74 (11.7%) but fewer residents aged 15-24 (9.8%). According to the 2021 Census, the population aged 35-44 grew from 12.2% to 14.2%, while the 45-54 age group declined from 12.4% to 11.1%. By 2041, demographic projections show significant shifts in Seaton-Grange's age structure. The 75-84 age group is projected to grow by 33%, reaching 2,119 people from 1,588. Notably, the combined age groups of 65 and above will account for 71% of total population growth, reflecting the area's aging demographic profile. In contrast, both the 5-14 and 0-4 age groups are projected to decrease in number.