St Peters - Marden
Statistical Area - sa2

An assessment of population growth drivers in St Peters - Marden reveals an overall ranking slightly below national averages considering recent, and medium term trends

St Peters - Marden's population was around 14,378 as of November 2025. This reflects an increase of 863 people since the 2021 Census, which reported a population of 13,515 people. The change is inferred from the estimated resident population of 14,250 in June 2024 and an additional 77 validated new addresses since the Census date. This level of population equates to a density ratio of 2,404 persons per square kilometer, placing it in the upper quartile relative to national locations assessed by AreaSearch. St Peters - Marden's growth rate of 6.4% since the census positions it within 0.7 percentage points of the state (7.1%). Population growth for the area was primarily driven by overseas migration, contributing approximately 92.0% of overall 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 adopted, based on 2021 data and released in 2023, with adjustments made using weighted aggregation from LGA to SA2 levels. Based on demographic trends and latest population numbers, St Peters - Marden is expected to increase by just below the median of national areas, expanding by 1,619 persons to reach a total of 15,997 by 2041, recording an overall gain of 10.2% over the 17-year period.

Residential development activity is slightly higher than average within St Peters - Marden when compared nationally

St Peters - Marden has seen approximately 54 new homes approved annually. Over the past five financial years, from FY21 to FY25, around 273 homes were approved, with an additional 29 approvals in FY26 so far. On average, about two people have moved to the area per new home constructed over these five years, indicating solid demand that supports property values.

New homes are being built at an average expected construction cost value of $562,000, suggesting a focus on the premium segment with upmarket properties. This financial year has seen around $65.1 million in commercial approvals, indicating strong commercial development momentum. Compared to Greater Adelaide, St Peters - Marden has about two-thirds the rate of new dwelling approvals per person and places among the 45th percentile of areas assessed nationally, offering more limited choices for buyers and supporting demand for existing dwellings.

New development consists of approximately 60% detached houses and 40% attached dwellings, featuring a blend of housing types across various price ranges. The location has around 380 people per dwelling approval, reflecting an established area. Future projections show St Peters - Marden adding approximately 1,472 residents by 2041. Current development appears well-matched to future needs, supporting steady market conditions without extreme price pressure.

St Peters - Marden has limited levels of nearby infrastructure activity, ranking in the 14thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 14 projects likely impacting the area. Notable projects are East Park Development, Broad Street Reserve Playground Upgrade, Norwood Green, and Marden Connect Development. The following details these projects in order of relevance.

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

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AreaSearch analysis places St Peters - Marden well above average for employment performance across multiple indicators

St Peters - Marden has a highly educated workforce with strong representation in professional services. Its unemployment rate was 2.5% as of June 2025.

The area experienced an estimated employment growth of 1.6% over the past year. As of June 2025, 8,266 residents were employed, with an unemployment rate of 1.5%, below Greater Adelaide's rate of 4.0%. Workforce participation was 65.2%, compared to Greater Adelaide's 61.7%. Key industries for employment among residents are health care & social assistance, professional & technical, and education & training.

The area has a particular specialization in professional & technical services, with an employment share of 1.8 times the regional level. Construction employs just 5.9% of local workers, below Greater Adelaide's 8.7%. Employment opportunities exist locally, but many residents commute elsewhere for work based on Census data. Between June 2024 and June 2025, employment levels increased by 1.6%, labour force grew by 1.7%, with unemployment remaining essentially unchanged. In contrast, Greater Adelaide saw employment rise by 2.1% and the labour force grow by 2.1%, with a marginal increase in unemployment. Jobs and Skills Australia's national employment forecasts from May 2025 project national employment growth of 6.6% over five years and 13.7% over ten years, varying significantly between industry sectors. Applying these projections to St Peters - Marden's employment mix suggests local growth of approximately 7.2% over five years and 14.8% over ten years.

Income analysis reveals strong economic positioning, with the area outperforming 60% of locations assessed nationally by AreaSearch

AreaSearch's latest postcode level ATO data for financial year 2022 shows that St Peters - Marden has high national incomes. The median assessed income is $58,643 and the average income stands at $88,428. This contrasts with Greater Adelaide's figures of a median income of $52,592 and an average income of $64,886. Based on Wage Price Index growth of 12.83% since financial year 2022, current estimates for September 2025 would be approximately $66,167 (median) and $99,773 (average). Census 2021 income data shows personal income ranks at the 74th percentile ($954 weekly), while household income sits at the 58th percentile. Income brackets indicate that 28.0% of residents (4,025 people) earn between $1,500 and $2,999 weekly, consistent with broader trends across the metropolitan region showing 31.8% in the same category. A significant 31.1% earn above $3,000 weekly. After housing costs, residents retain 86.7% of income. The area's SEIFA income ranking places it in the 8th decile.

St Peters - Marden displays a diverse mix of dwelling types, with above-average rates of outright home ownership

St Peters - Marden dwelling structure, as per the latest Census, consisted of 61.6% houses and 38.4% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Adelaide metro's 51.7% houses and 48.4% other dwellings. Home ownership in St Peters - Marden stood at 37.1%, with mortgaged dwellings at 30.0% and rented ones at 32.9%. The median monthly mortgage repayment was $2,080, higher than Adelaide metro's average of $2,000. Median weekly rent in the area was $320, lower than Adelaide metro's $340. Nationally, St Peters - Marden's mortgage repayments were significantly higher at $2,080 compared to Australia's average of $1,863, while rents were substantially lower at $320 against the national figure of $375.

St Peters - Marden features high concentrations of lone person households and group households, with a higher-than-average median household size

Family households constitute 63.8 percent of all households, including 28.6 percent couples with children, 26.3 percent couples without children, and 7.8 percent single parent families. Non-family households comprise the remaining 36.2 percent, with lone person households at 31.8 percent and group households making up 4.5 percent of the total. The median household size is 2.3 people, larger than the Greater Adelaide average of 2.2.

St Peters - Marden shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

St Peters - Marden has a notably high educational attainment among its residents aged 15 and above. 48.6% of these residents hold university qualifications, significantly surpassing the broader benchmarks of South Australia (25.7%) and Greater Adelaide (28.9%). This substantial educational advantage positions the area strongly for knowledge-based opportunities. Bachelor degrees are the most common at 30.5%, followed by postgraduate qualifications (13.3%) and graduate diplomas (4.8%).

Vocational pathways account for 21.9% of qualifications among those aged 15 and above, with advanced diplomas making up 9.3% and certificates 12.6%. Educational participation is also notably high in the area, with 29.2% of residents currently enrolled in formal education. This includes 9.1% in tertiary education, 8.4% in primary education, and 7.2% pursuing secondary education. The four schools in St Peters - Marden have a combined enrollment reaching 6,993 students as of the latest data. The area demonstrates above-average socio-educational conditions with an ICSEA score of 1091. The educational mix includes one primary school, one secondary school, and two K-12 schools. School capacity exceeds typical residential needs in the area, with 48.7 places per 100 residents compared to the regional average of 32.8, indicating that St Peters - Marden serves as an educational center for the broader region.

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

Public transport analysis shows 57 active transport stops operating within St Peters - Marden area. These stops serve a mix of bus routes, totalling 27 individual routes. They collectively provide 2,660 weekly passenger trips.

Transport accessibility is rated good, with residents typically located 216 meters from the nearest stop. Service frequency averages 380 trips per day across all routes, equating to approximately 46 weekly trips per individual stop.

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

St Peters - Marden demonstrates above-average health outcomes, with both young and old age cohorts showing low prevalence of common health conditions. The rate of private health cover is exceptionally high at approximately 64% of the total population (9,201 people), compared to 61.4% across Greater Adelaide. Nationally, this figure stands at 55.3%.

The most prevalent medical conditions in the area are mental health issues and arthritis, impacting 7.7 and 7.3% of residents respectively. Notably, 71.3% of residents declare themselves completely clear of medical ailments, compared to 70.4% across Greater Adelaide. The area has 19.9% of residents aged 65 and over (2,864 people). Health outcomes among seniors are particularly strong, broadly in line with the general population's health profile.

St Peters - Marden 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

St Peters-Marden has a higher cultural diversity compared to most local markets, with 28.8% of its population born overseas and 24.0% speaking a language other than English at home. Christianity is the predominant religion in St Peters-Marden, accounting for 46.3% of the population. Notably, the 'Other' religious category comprises 1.5% of the population, slightly higher than the Greater Adelaide average of 1.6%.

In terms of ancestry, the top three groups are English (24.7%), Australian (19.6%), and Italian (10.0%). Some ethnic groups show notable variations: Greek is overrepresented at 3.2% compared to 2.9% regionally, German is at 5.1% versus 5.0%, and Polish remains steady at 0.9%.

St Peters - Marden's median age exceeds the national pattern

The median age in St Peters - Marden as of 2021 is 40 years, similar to Greater Adelaide's average of 39 years but somewhat older than Australia's median age of 38 years. The 15-24 age group constitutes 14.3% of the population compared to Greater Adelaide, while the 5-14 cohort makes up 9.7%. Post-census data shows that the 15-24 age group has grown from 12.0% in the previous census to 14.3%, the 45-54 cohort has declined from 12.8% to 11.3%, and the 5-14 group has dropped from 10.8% to 9.7%. Population forecasts for 2041 indicate significant demographic changes in St Peters - Marden, with the 85+ age group projected to grow by 89% (from 407 to 865 people). The combined 65+ age groups are expected to account for 60% of total population growth, reflecting the area's aging demographic profile. Conversely, the 0-4 cohort is projected to decline by 1 person.