Marleston

Population growth drivers in Marleston are strong compared to national averages based on AreaSearch's ranking of recent, and medium to long-term trends

As of May 2026, the population of the suburb of Marleston is estimated at around 2,963. This reflects a growth of 1,013 people since the 2021 Census, which reported a population of 1,950. The increase was inferred from AreaSearch's estimation of the resident population as 2,961 following examination of ABS data released in June 2025 and validation of an additional 26 new addresses since the Census date. This results in a population density ratio of 3,054 persons per square kilometer, placing Marleston in the upper quartile relative to national locations assessed by AreaSearch. The suburb's growth rate of 51.9% since the 2021 census exceeded both the state's rate of 7.5% and the SA3 area average, making it a growth leader in the region. Overseas migration contributed approximately 97.0% 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 by this data and years post-2032, the SA State Government's Regional/LGA projections by age category are adopted, released in 2023 based on 2021 data, with adjustments made using weighted aggregation methods from LGA to SA2 levels. Considering projected demographic shifts, an above median population growth is projected for statistical areas across the nation. The suburb of Marleston is expected to grow by 497 persons to 2041 based on aggregated SA2-level projections, reflecting a total increase of 16.7% over the 16-year period.

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

AreaSearch analysis of ABS building approval data indicates Marleston recorded approximately 31 residential property approvals per year over the past five financial years, totalling an estimated 157 homes. As of FY26, 13 approvals have been recorded. The average population increase per dwelling built in the area between FY21 and FY25 was 0.9 people per year. New construction has been matching or outpacing demand, offering buyers more options and potentially enabling population growth to exceed current expectations.

Average expected construction cost of new properties is $379,000, indicating a focus on the premium segment with upmarket properties. In FY26, there have been $10.0 million in commercial approvals, suggesting steady commercial investment activity. Compared to Greater Adelaide, Marleston records 134.0% more new home approvals per person, creating greater choice for buyers despite recent slowdowns in building activity. This level is above the national average, reflecting strong developer confidence in the area. New building activity shows 43.0% detached houses and 57.0% attached dwellings, focusing on higher-density living to create more affordable entry points for downsizers, investors, and first-home buyers. With around 187 people per dwelling approval, Marleston exhibits characteristics of a growth area.

According to the latest AreaSearch quarterly estimate, Marleston is projected to add 495 residents by 2041. Current construction levels should adequately meet demand, creating favourable conditions for buyers while potentially enabling growth that exceeds current forecasts.

Marleston has emerging levels of nearby infrastructure activity, ranking in the 30thth percentile nationally

AreaSearch has identified zero infrastructure projects that could impact this area. Notable initiatives include the North South Corridor project, Tram Grade Separation Projects, construction of a New Women's and Children's Hospital, and SA Water Capital Work Delivery Contracts from 2024 to 28. These are among those most likely to be relevant.

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

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The labour market in Marleston shows considerable strength compared to most other Australian regions

Marleston has an educated workforce with significant representation in essential services sectors. The unemployment rate is 3.2%. In the past year, estimated employment growth was 14.4%, according to AreaSearch's aggregation of statistical area data.

As of December 2025, 1,858 residents are employed while the unemployment rate is 0.6% lower than Greater Adelaide's rate of 3.8%. Workforce participation in Marleston is higher at 74.2%, compared to Greater Adelaide's 66.0%. Census responses indicate that 9.5% of residents work from home, with Covid-19 lockdown impacts considered. Leading employment industries are health care & social assistance, accommodation & food, and retail trade.

The area specializes in accommodation & food, with an employment share 1.8 times the regional level. Construction has limited presence at 5.6%, compared to the regional average of 8.7%. There are 1.9 workers per resident as of the Census, indicating Marleston functions as an employment hub attracting workers from surrounding areas. Over a 12-month period, employment increased by 14.4% and labour force grew by 13.7%, reducing the unemployment rate by 0.6 percentage points. In comparison, Greater Adelaide saw employment grow by 4.2%, labour force expand by 3.9%, and unemployment fall by 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest future demand within Marleston. National employment is projected to increase by 6.6% over five years and 13.7% over ten years, but growth rates vary between industry sectors. Applying these projections to Marleston's employment mix indicates local employment should grow by 6.8% over five years and 14.1% over ten years, based on a simple weighting extrapolation for illustrative purposes.

Income figures position the area below 75% of locations analysed nationally by AreaSearch

Marleston's median income among taxpayers was $49,507 in financial year 2023. The average income stood at $59,045 during the same period. These figures are lower than Greater Adelaide's median income of $54,808 and average income of $66,852. By March 2026, estimates suggest Marleston's median income will be approximately $54,542 and average income around $65,050, based on a 10.17% growth in wages since financial year 2023. Census data from 2021 shows incomes in Marleston are modest, ranking between the 30th and 38th percentiles for household, family, and personal incomes. Income analysis reveals that 31.4% of Marleston's population (930 individuals) fall within the $1,500 - $2,999 income range, similar to the metropolitan region where 31.8% occupy this bracket. Housing affordability pressures are severe in Marleston, with only 82.8% of income remaining after housing costs, ranking at the 28th percentile. The suburb's SEIFA income ranking places it in the 4th decile.

Marleston displays a diverse mix of dwelling types, with a higher proportion of rental properties than the broader region

In Marleston, as per the latest Census, 50.2% of dwellings were houses, with the remaining 49.8% comprising semi-detached homes, apartments, and other types. In contrast, Adelaide metro had 75.2% houses and 24.9% other dwellings. Home ownership in Marleston stood at 22.4%, with mortgaged properties at 30.3% and rented ones at 47.3%. The median monthly mortgage repayment was $1,528, lower than Adelaide metro's $1,562. Weekly rent median was $290, compared to Adelaide metro's $320. Nationally, Marleston's mortgage repayments were significantly lower than the Australian average of $1,863, and rents were substantially below the national figure of $375.

Marleston features high concentrations of group households and lone person households, with a lower-than-average median household size

Family households account for 54.9% of all households, including 19.7% couples with children, 24.3% couples without children, and 8.5% single parent families. Non-family households constitute the remaining 45.1%, with lone person households at 36.7% and group households comprising 8.5%. The median household size is 2.1 people, which is smaller than the Greater Adelaide average of 2.5.

Marleston faces educational challenges, with performance metrics placing it in the bottom quartile of areas assessed nationally

The area's educational profile is notable regionally with university qualification rates at 35.3% of residents aged 15+, surpassing the South Australia average of 25.7% and Greater Adelaide's rate of 28.9%. Bachelor degrees are most prevalent at 22.9%, followed by postgraduate qualifications (9.4%) and graduate diplomas (3.0%). Vocational credentials are also prominent, with 27.8% of residents aged 15+ holding these, including advanced diplomas (9.3%) and certificates (18.5%).

Educational participation is high at 25.5%, comprising tertiary education (9.5%), primary education (6.5%), and secondary education (3.6%).

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

Marleston has 13 active public transport stops, all serving buses. These stops are covered by 15 different routes, offering a total of 1,111 weekly passenger trips. Residents enjoy good transport accessibility, with an average distance of 217 meters to the nearest stop. Most residents commute outwards from this primarily residential area. Car remains the primary mode of transport, used by 79% of residents, while bus accounts for 12%. On average, there is one vehicle per dwelling, lower than the regional norm.

Only 9.5% of residents work from home, according to the 2021 Census, which may be influenced by COVID-19 conditions. Across all routes, service frequency averages 158 trips per day, translating to approximately 85 weekly trips per stop.

Health performance in Marleston is well below average with considerably higher than average prevalence of common health conditions and to an even higher degree among older age cohorts

Marleston faces significant health challenges, as indicated by AreaSearch's assessment. The prevalence of common health conditions is substantially higher than average, particularly among older age cohorts. Only approximately 50% (1,492 people) of Marleston's total population has private health cover, compared to Greater Adelaide's 52.7% and the national average of 55.7%.

Mental health issues and arthritis are the most prevalent conditions, affecting 10.7% and 8.0% of residents respectively. However, 67.1% of residents report having no medical ailments, similar to Greater Adelaide's 67.9%. Health outcomes among working-age individuals are generally typical. Marleston has a lower proportion of seniors (16.9%, or 500 people) than Greater Adelaide (19.2%). While health outcomes for seniors present some challenges, they rank lower nationally compared to the broader population.

Marleston is among the most culturally diverse areas in the country based on AreaSearch assessment of a range of language and cultural background related metrics

Marleston has a high level of cultural diversity, with 40.2% of its population born overseas and 40.4% speaking a language other than English at home. Christianity is the predominant religion in Marleston, accounting for 41.8% of the population. The category 'Other' is overrepresented in Marleston compared to Greater Adelaide, with 4.1% versus 1.8%.

In terms of ancestry, Australians make up 20.7%, English 19.7% (lower than the regional average of 27.8%), and Other 14.5%. Notably, Greeks are overrepresented at 5.0% compared to 2.0% regionally, Indians at 6.3% versus 2.3%, and Koreans at 0.8% versus 0.3%.

Marleston's population is slightly younger than the national pattern

The median age in Marleston is 36, which is slightly below Greater Adelaide's average of 39 and the Australian median of 38. Compared to Greater Adelaide, Marleston has a higher proportion of residents aged 25-34 (21.6%), but fewer residents aged 5-14 (7.9%). This concentration of 25-34 year-olds is significantly higher than the national average of 14.6%. According to the 2021 Census, the proportion of Marleston's population aged 25-34 has increased from 20.1% to 21.6%, while the percentage of residents aged 85 and over has decreased from 5.6% to 4.9%. By 2041, Marleston is projected to experience notable changes in its age distribution. The 45-54 age group is expected to grow by 29%, adding 86 people and reaching a total of 383 residents from the previous figure of 296. The 5-14 age group, meanwhile, is projected to grow at a more modest rate of 7%, with an increase of 16 residents.