Somerton Park

An assessment of population growth drivers in Somerton Park reveals an overall ranking slightly below national averages considering recent, and medium term trends

Based on AreaSearch's analysis of Australian Bureau of Statistics population updates for the broader area, the suburb of Somerton Park had an estimated population of around 6,466 as of May 2026. This figure reflects a growth of 655 people (11.3%) since the 2021 Census, which reported a population of 5,811 people. AreaSearch's estimation is based on resident population data from June 2025 and validated new addresses since the Census date. This results in a population density ratio of 2,886 persons per square kilometer, placing Somerton Park in the upper quartile relative to national locations assessed by AreaSearch. The suburb's growth rate exceeded that of its SA3 area (5.7%) and SA4 region, marking it as a growth leader. Overseas migration was the primary driver 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 by this data and years post-2032, SA State Government's Regional/LGA projections by age category, released in 2023 based on 2021 data, are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Looking ahead, AreaSearch projects the suburb will increase its population by just below the median statistical area rate, expecting an expansion of 816 persons to reach 7,282 by 2041, reflecting a gain of 12.5% in total over the 16 years.

AreaSearch analysis of residential development drivers sees Somerton Park recording a relatively average level of approval activity when compared to local markets analysed countrywide

Based on AreaSearch analysis, Somerton Park averaged approximately 32 new dwelling approvals per year. Between FY-21 and FY-25, around 160 homes were approved, with a further 27 approved in FY-26. This averages to about 1.4 new residents per year per dwelling constructed over these years.

The average construction cost value of new dwellings is approximately $631,000, indicating a focus on the premium market segment. In FY-26, there have been $5.7 million in commercial approvals, suggesting the area's residential character. Compared to Greater Adelaide, Somerton Park has 15.0% less new development per person but ranks among the 68th percentile nationally. New developments consist of 41.0% detached houses and 59.0% attached dwellings, marking a shift from existing housing patterns (currently 63.0% houses). This trend may be due to diminishing developable land availability and evolving lifestyle preferences.

There are approximately 198 people per dwelling approval in the area. Future projections estimate Somerton Park will add around 811 residents by 2041, based on the latest AreaSearch quarterly estimate. Current development levels appear aligned with future requirements, suggesting stable market conditions without significant price pressures.

Somerton Park has emerging levels of nearby infrastructure activity, ranking in the 29thth percentile nationally

No infrastructure projects have been identified by AreaSearch as likely to impact the area. Key projects include Tram Grade Separation at Marion Road and Cross Road in Plympton, River Torrens to Darlington (T2D) Project, 12-Storey Residential Tower In Glenelg, and Morphettville/Glengowrie Horse Related Activities Code Amendment. The following list details those likely to be most relevant.

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The exceptional employment performance in Somerton Park places it among Australia's strongest labour markets

Somerton Park has an educated workforce with strong professional services representation. Its unemployment rate was 0.8% in December 2025, with estimated employment growth of 6.3% over the past year. This is based on AreaSearch aggregation of statistical area data.

As of December 2025, 3,543 residents were employed while the unemployment rate was 3.0% lower than Greater Adelaide's rate of 3.8%. Workforce participation was somewhat below standard at 63.3%, compared to Greater Adelaide's 66.0%. According to Census responses, 15.4% of residents worked from home in December 2025. Leading employment industries were health care & social assistance, education & training, and professional & technical services.

Somerton Park had a notably high concentration in professional & technical services, with employment levels at 1.3 times the regional average. Conversely, manufacturing showed lower representation at 4.6% versus the regional average of 7.0%. Many residents commuted elsewhere for work based on Census data. During the year to December 2025, employment levels increased by 6.3%, and labour force increased by 5.9%, causing the unemployment rate to fall by 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest national employment will expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Somerton Park's employment mix suggests local employment should increase by 7.0% over five years and 14.3% 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

The suburb of Somerton Park has an extremely high income level nationally, according to the latest Australian Taxation Office (ATO) data aggregated by AreaSearch for the financial year 2023. The median income among taxpayers in Somerton Park is $56,518, with an average income of $79,707. These figures compare to those for Greater Adelaide, which are $54,808 and $66,852 respectively. Based on Wage Price Index growth of 10.17% since financial year 2023, current estimates would be approximately $62,266 (median) and $87,813 (average) as of March 2026. According to the 2021 Census figures, personal income ranks at the 68th percentile ($908 weekly), while household income sits at the 43rd percentile. The largest segment comprises 24.2% earning $1,500 - 2,999 weekly (1,564 residents), which aligns with the metropolitan region where this cohort likewise represents 31.8%. After housing expenses, 85.6% of income remains for other expenses. The area's Socio-Economic Indexes for Areas (SEIFA) income ranking places it in the 7th decile.

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

In Somerton Park, as per the latest Census evaluation, 62.7% of dwellings were houses, with the remaining 37.3% consisting of other types such as semi-detached homes, apartments, and 'other' dwellings. This is compared to Adelaide metro's 75.2% houses and 24.9% other dwellings. Home ownership in Somerton Park stood at 43.0%, with mortgaged properties at 31.6% and rented dwellings at 25.5%. The median monthly mortgage repayment was $2,058, exceeding the Adelaide metro average of $1,562. The median weekly rent in Somerton Park was recorded at $335, compared to Adelaide metro's $320. Nationally, Somerton Park's mortgage repayments were significantly higher than the Australian average of $1,863, while rents were substantially lower than the national figure of $375.

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

Family households account for 62.5% of all households, including 26.5% couples with children, 27.5% couples without children, and 7.9% single parent families. Non-family households constitute the remaining 37.5%, with lone person households at 34.6% and group households comprising 2.7%. The median household size is 2.2 people, which is smaller than the Greater Adelaide average of 2.5.

Somerton Park shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

The area's educational profile is notable regionally, with university qualification rates at 35.2% among residents aged 15+, surpassing the South Australian average of 25.7% and the SA4 region's rate of 28.1%. Bachelor degrees are most prevalent at 23.6%, followed by postgraduate qualifications at 8.3% and graduate diplomas at 3.3%. Vocational credentials are also prominent, with 30.1% of residents aged 15+ holding such qualifications – advanced diplomas at 12.0% and certificates at 18.1%.

Educational participation is high, with 26.2% of residents currently enrolled in formal education. This includes 8.4% in secondary education, 8.1% in primary education, and 6.1% pursuing tertiary education.

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

Transport analysis indicates 29 active public transport stops within Somerton Park, offering a mix of bus services. These stops are served by 24 individual routes, collectively facilitating 1,262 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 177 meters from the nearest stop. Most residents commute outward due to the area's primarily residential nature. Car remains the dominant transport mode at 86%, with an average of 1.3 vehicles per dwelling. According to the 2021 Census, 15.4% of residents work from home, which may reflect COVID-19 conditions.

Service frequency averages 180 trips per day across all routes, translating to approximately 43 weekly trips per stop.

The level of general health in Somerton Park is notably higher than the national average with both young and old age cohorts seeing low prevalence of common health conditions

Somerton Park shows superior health outcomes, as assessed by AreaSearch's analysis of mortality rates and chronic condition prevalence. Both younger and older age groups exhibit low rates of common health conditions.

Private health cover is exceptionally high at approximately 58% of the total population (3,780 people), compared to 52.7% across Greater Adelaide. The most prevalent medical conditions are arthritis and asthma, affecting 9.2 and 7.6% of residents respectively. Notably, 65.9% of residents report being completely free from medical ailments, compared to 67.9% in Greater Adelaide. The under-65 population shows better-than-average health outcomes. The area has a higher proportion of seniors aged 65 and over at 29.6% (1,913 people), compared to 19.2% in Greater Adelaide. Health outcomes among seniors are above average, with national rankings largely matching those of the general population.

In terms of cultural diversity, Somerton Park records figures broadly comparable to the national average, as found in AreaSearch's assessment of a number of language and cultural background related metrics

Somerton Park's population, like the wider region, is predominantly Australian-born (80.0%), with a citizenship rate of 92.2% and English as the primary language spoken at home (90.8%). Christianity is the dominant religion in Somerton Park, accounting for 50.9% of its population. Notably, Judaism is slightly overrepresented compared to Greater Adelaide, with 0.2% of Somerton Park's population identifying as such.

The top three ancestral groups are English (32.4%), Australian (25.0%), and Scottish (8.3%). Some ethnic groups show notable differences: Polish residents comprise 1.1%, German 5.9%, and Welsh 0.6% of Somerton Park's population, each slightly higher than their regional counterparts.

Somerton Park hosts an older demographic, ranking in the top quartile nationwide

Somerton Park's median age is 48 years, significantly higher than Greater Adelaide's 39 and above the national average of 38. Compared to Greater Adelaide, Somerton Park has a higher proportion of residents aged 75-84 at 11.8%, but fewer residents aged 25-34 at 9.2%. This 75-84 age group is well above the national figure of 6.1%. Between the 2021 Census and now, the proportion of Somerton Park's population aged 75 to 84 has grown from 8.7% to 11.8%, while the 45 to 54 age group has declined from 13.9% to 12.3% and the 55 to 64 group has dropped from 13.7% to 12.5%. By 2041, Somerton Park's population is expected to see significant shifts in its age composition. The 85+ age group is projected to grow by 107%, reaching 656 people from the current 316. This demographic aging trend will result in residents aged 65 and older representing 68% of the anticipated growth. In contrast, the 0 to 4 age cohort is expected to show minimal growth of just 3%, with an increase of only 6 people.