Seaton - Grange

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

Based on AreaSearch's analysis, Seaton - Grange's population is around 19,091 as of Feb 2026. This reflects an increase of 1,590 people (9.1%) since the 2021 Census, which reported a population of 17,501 people. The change is inferred from the estimated resident population of 18,255 from the ABS as of June 2024 and an additional 351 validated new addresses since the Census date. This population level equates to a density ratio of 2,314 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. Seaton - Grange's 9.1% growth since the 2021 census exceeded the state (9.0%), marking it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration, which contributed approximately 95.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, and for years post-2032, the SA State Government's Regional/LGA projections by age category, released in 2023 and based on 2021 data, are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Considering the projected demographic shifts, a population increase just below the median of national areas is expected, with the area expected to expand by 1,706 persons to 2041 based on the latest annual ERP population numbers, reflecting an increase of 4.6% in total 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 around 161 new dwelling approvals per year, totalling 808 homes over the past 5 financial years. So far in FY-26126 approvals have been recorded. Given an average of 1.1 new residents per year per dwelling constructed over the past 5 financial years (between FY-21 and FY-25), supply and demand appear well-balanced, creating stable market conditions, while new properties are constructed at an average value of $328,000. There have also been $27.9 million in commercial approvals this financial year, indicating steady commercial investment activity.

Compared to Greater Adelaide, Seaton - Grange maintains similar construction rates (per person), supporting market stability in line with regional patterns. New building activity shows 73.0% detached dwellings and 27.0% townhouses or apartments, sustaining the area's suburban identity with a concentration of family homes suited to buyers seeking space. At around 106 people per approval, Seaton - Grange reflects a developing area.

Looking ahead, Seaton - Grange is expected to grow by 870 residents through to 2041 (from the latest AreaSearch quarterly estimate). 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 limited levels of nearby infrastructure activity, ranking in the 19thth percentile nationally

Nothing can influence an area's performance as much as changes to local infrastructure, major projects, and planning initiatives. In total, 29 projects have been identified by AreaSearch that are likely to have an impact on the area. Key projects include the Findon Energy Storage Facility, Gleneagles Reserve Stormwater Management & Reserve Upgrade, Grange Healthcare Precinct, and Fulham Gardens Shopping Centre Redevelopment, with the list below detailing those likely to be of most relevance.

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.

AreaSearch assessment positions Seaton - Grange ahead of most Australian regions for employment performance

Seaton - Grange features a skilled workforce, with essential services sectors well represented, an unemployment rate of only 3.5%, and 6.5% in estimated employment growth over the past year. As of December 2025, 9,649 residents are in work while the unemployment rate is 0.3% below Greater Adelaide's rate of 3.8%, and workforce participation is somewhat below standard (64.7% compared to Greater Adelaide's 67.2%). Based on Census responses, a low 10.6% of residents were found to work from home, though Covid-19 lockdown impacts should be considered.

The key industries of employment among residents are health care & social assistance, retail trade, and construction. The area shows particularly strong specialization in transport, postal & warehousing, with an employment share of 1.4 times the regional level. Meanwhile, health care & social assistance has a limited presence with 16.0% employment compared to 17.7% regionally. The predominantly residential area appears to offer limited employment opportunities locally, as indicated by the count of Census working population vs resident population.

Based on AreaSearch analysis of SALM and ABS data, over the 12 months to December 2025, employment increased by 6.5% while labour force increased by 5.6%, causing the unemployment rate to fall by 0.9 percentage points. By comparison, Greater Adelaide recorded employment growth of 4.2%, labour force growth of 3.9%, with unemployment falling 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 can offer further insight into potential future demand within Seaton - Grange. These projections, covering five and ten-year periods, have been mapped against the local employment profile to estimate growth patterns. While national employment is forecast to expand by 6.6% over five years and 13.7% over ten years, growth rates differ significantly between industry sectors. Applying these industry-specific projections to Seaton - Grange's employment mix suggests local employment should increase by 6.5% over five years and 13.5% over ten years (please note this is a simple weighting extrapolation for illustrative purposes and does not take into account localised population projections).

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

As per AreaSearch's latest postcode level ATO data released for FY-23, the Seaton - Grange SA2's median income among taxpayers is $56,798, with an average of $71,877. This is above the national average, and compares to Greater Adelaide's median of $54,808 and average of $66,852. Based on Wage Price Index growth of 8.8% since FY-23, current estimates would be approximately $61,796 (median) and $78,202 (average) as of September 2025. Census data reveals household, family and personal incomes all rank modestly in Seaton - Grange, between the 30th and 38th percentiles. Income analysis reveals the predominant cohort spans 29.3% of locals (5,593 people) in the $1,500 - 2,999 category, reflecting patterns seen in the surrounding region where 31.8% similarly occupy this range. Housing affordability pressures are severe, with only 83.7% of income remaining, ranking at the 30th percentile, and 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 within Seaton - Grange, as evaluated at the latest Census, comprised 64.6% houses and 35.5% other dwellings (semi-detached, apartments, 'other' dwellings), in comparison to Adelaide metro's 75.2% houses and 24.9% other dwellings. Meanwhile, the level of home ownership within Seaton - Grange was well beyond that of Adelaide metro, at 35.5%, with the remainder of dwellings either mortgaged (32.0%) or rented (32.5%). The median monthly mortgage repayment in the area was well above the Adelaide metro average at $1,733, while the median weekly rent figure was recorded at $320, compared to Adelaide metro's $1,562 and $320. Nationally, Seaton - Grange's mortgage repayments are lower than the Australian average of $1,863, while rents are 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 dominate at 64.8% of all households, comprising 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% of the total. The median household size of 2.3 people 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

At 26.1%, university qualification levels in Seaton - Grange sit marginally below the Australian average of 30.4%, though the modest gap indicates reasonable educational competitiveness. Bachelor degrees lead at 18.3%, followed by postgraduate qualifications (5.4%) and graduate diplomas (2.4%). Trade and technical skills feature prominently, with 32.5% of residents aged 15+ holding vocational credentials, including advanced diplomas (10.5%) and certificates (22.0%).

A substantial 24.0% of the population actively pursues formal education. This includes 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

Public transport analysis reveals 86 active transport stops operating within Seaton - Grange, comprising a mix of trains and buses. These stops are serviced by 38 individual routes, collectively providing 2,157 weekly passenger trips. Transport accessibility is rated as good, with residents typically located 203 meters from the nearest transport stop. As a primarily residential area, most residents commute outward; the car remains the dominant mode at 87%. Vehicle ownership averages 1.2 per dwelling, which is below the regional average. A relatively low 10.6% of residents work from home (2021 Census; may reflect COVID-19 conditions).

Service frequency averages 308 trips per day across all routes, 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, and the rate of private health cover is fairly high at approximately 55% of the total population (~10,480 people), compared to 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, while 66.8% declared 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 (4,488 people), which is higher than the 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 was found to be more culturally diverse than the vast majority of local markets, with 27.6% of its population born overseas and 24.5% speaking a language other than English at home. The main religion in Seaton-Grange was found to be Christianity, which makes up 55.4% of people in Seaton-Grange. However, the most apparent overrepresentation was in Other, which comprises 1.9% of the population, compared to 1.8% across Greater Adelaide.

In terms of ancestry (country of birth of parents), the top three represented groups in Seaton-Grange are English, comprising 23.4% of the population, Australian, comprising 20.6% of the population, and Italian, comprising 12.8% of the population, which is substantially higher than the regional average of 5.2%. Additionally, there are notable divergences in the representation of certain other ethnic groups: Serbian is notably overrepresented at 1.4% of Seaton-Grange (vs 0.4% regionally), Polish at 1.3% (vs 1.0%) and Greek at 4.2% (vs 2.0%).

Seaton - Grange's median age exceeds the national pattern

The 43-year median age in Seaton - Grange is significantly above Greater Adelaide's average of 39 and similarly considerably older than Australia's 38 years. Relative to Greater Adelaide, Seaton - Grange has a higher concentration of 65 - 74 residents (11.7%) but fewer 15 - 24 year-olds (9.8%). Following the 2021 Census, the 35 to 44 age group has grown from 12.2% to 14.2% of the population. Conversely, the 45 to 54 cohort has declined from 12.4% to 11.1%. Looking ahead to 2041, demographic projections reveal significant shifts in Seaton - Grange's age structure. Leading the demographic shift, the 75 to 84 group will grow by 33% (530 people), reaching 2,119 from 1,588. Notably, the combined 65+ age groups will account for 71% of total population growth, reflecting the area's aging demographic profile. In contrast, both the 5 to 14 and 0 to 4 age groups will see reduced numbers.