Aldgate - Stirling

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

Aldgate - Stirling's population, as per AreaSearch's analysis, is approximately 18,902 as of February 2026. This figure represents an increase of 694 individuals (3.8%) since the 2021 Census, which reported a population of 18,208 people. The change was inferred from the estimated resident population of 18,843 in June 2024 and an additional 22 validated new addresses since the Census date. This results in a population density ratio of 161 persons per square kilometer, indicating significant space per person and potential room for further development. Overseas migration primarily drove population growth, contributing approximately 70.5% 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 used, based on 2021 data and released in 2023, with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Looking ahead, population projections indicate an increase just below the median of national statistical areas. The area is expected to expand by 1,356 persons to 2041 based on the latest annual ERP population numbers, reflecting a gain of 6.9% in total over the 17 years.

Residential development activity is slightly higher than average within Aldgate - Stirling when compared nationally

Aldgate - Stirling has seen approximately 40 dwelling approvals per year. Between FY-21 and FY-25203 homes were approved, with a further 24 approved in FY-26. On average, 3.3 people moved to the area each year for every dwelling built over these five years.

This indicates that supply is falling short of demand, likely leading to increased buyer competition and pricing pressures. The average construction cost of new dwellings is $500,000, suggesting developers are targeting the premium market segment with higher-end properties. In FY-26, there have been $24.4 million in commercial development approvals, showing moderate levels of commercial development. Compared to Greater Adelaide, Aldgate - Stirling has significantly less development activity, 79.0% below the regional average per person. This limited new construction typically reinforces demand and pricing for existing dwellings.

The recent development has been entirely comprised of detached dwellings, maintaining the area's low density nature and attracting space-seeking buyers. There are estimated to be 447 people in the area per dwelling approval. By 2041, Aldgate - Stirling is projected to grow by 1,297 residents. Development is keeping pace with this projected growth, but as the population expands, buyers may face increasing competition.

Aldgate - Stirling has emerging levels of nearby infrastructure activity, ranking in the 29thth percentile nationally

Four projects identified by AreaSearch are expected to influence the local area significantly: South Eastern Freeway Upgrade (scheduled for completion in 2025), Adelaide Public Transport Capacity and Access project (commencing in late 2023), and Adelaide's Inner And Outer Ring Route Capacity Improvements initiative (planned for commencement in early 2024).

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AreaSearch analysis of employment trends sees Aldgate - Stirling performing better than 90% of local markets assessed across Australia

Aldgate - Stirling has a highly educated workforce with professional services being well represented. The unemployment rate is 1.8% and there has been an estimated employment growth of 2.7% in the past year. As of September 2025, 10,671 residents are employed while the unemployment rate is 2.1% lower than Greater Adelaide's rate of 3.9%.

Workforce participation is at 70.4%, similar to Greater Adelaide's 66.4%. According to Census responses, 19.4% of residents work from home. Employment is concentrated in health care & social assistance, education & training, and professional & technical services, with the latter being particularly notable at 1.7 times the regional average. Retail trade shows lower representation at 7.4% compared to the regional average of 10.0%.

The area may offer limited local employment opportunities as indicated by the ratio of Census working population to resident population. Between September 2024 and September 2025, employment levels increased by 2.7%, labour force grew by 3.2%, and unemployment rose by 0.4 percentage points. In contrast, Greater Adelaide saw employment rise by 3.0%, labour force grow by 2.9%, and unemployment fall by 0.1 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest that Aldgate - Stirling's employment should increase by 7.0% over five years and 14.4% over ten years, based on a simple weighting extrapolation of industry-specific projections against the local employment mix.

Income metrics indicate excellent economic conditions, with the area achieving higher performance than 75% of national locations assessed by AreaSearch

AreaSearch's latest postcode level ATO data, released for financial year ending June 2023, indicates Aldgate - Stirling SA2 had a median income of $62,222 and an average income of $87,511 among taxpayers. These figures are among the highest in Australia, compared to Greater Adelaide's median of $54,808 and average of $66,852. Based on Wage Price Index growth of 8.8% since financial year ending June 2023, current estimates would be approximately $67,698 (median) and $95,212 (average) as of September 2025. According to the 2021 Census, household, family, and personal incomes in Aldgate - Stirling rank highly nationally, between the 78th and 83rd percentiles. The earnings profile shows that 29.9% of residents (5,651 people) fall into the $1,500 - $2,999 weekly income bracket, aligning with regional levels where this cohort represents 31.8%. Notably, 36.9% of residents exceed $3,000 weekly, indicating strong purchasing power within the community. After housing costs, residents retain 88.7% of their income, reflecting strong purchasing power and the area's SEIFA income ranking places it in the 9th decile.

Aldgate - Stirling is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

Aldgate-Stirling's dwelling structures, as per the latest Census, consisted of 98.1% houses and 1.8% other dwellings (semi-detached, apartments, 'other' dwellings). This contrasts with Adelaide metro's 75.2% houses and 24.9% other dwellings. Home ownership in Aldgate-Stirling stood at 42.9%, with mortgaged dwellings at 48.8% and rented ones at 8.2%. The median monthly mortgage repayment was $2,000, higher than Adelaide metro's average of $1,562. Median weekly rent in Aldgate-Stirling was $410, compared to Adelaide metro's $320. Nationally, Aldgate-Stirling's mortgage repayments exceed the Australian average of $1,863, while rents are higher than the national figure of $375.

Aldgate - Stirling features high concentrations of family households, with a higher-than-average median household size

Family households comprise 79.8% of all households, including 39.3% couples with children, 31.7% couples without children, and 8.3% single parent families. Non-family households account for the remaining 20.2%, with lone person households at 18.8% and group households comprising 1.4%. The median household size is 2.7 people, which is larger than the Greater Adelaide average of 2.5.

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

Educational attainment in Aldgate significantly exceeds broader benchmarks. As of the latest data, 45.9% of residents aged 15 and above hold university qualifications, compared to 25.7% in South Australia (SA) and 28.9% in Greater Adelaide. The area's educational advantage is evident in its high proportion of residents with bachelor degrees (28.9%), postgraduate qualifications (11.5%), and graduate diplomas (5.5%). Vocational credentials are also prominent, with 27.2% of residents aged 15 and above holding such qualifications, including advanced diplomas (11.1%) and certificates (16.1%).

Educational participation is notably high in Aldgate, with 30.2% of residents currently enrolled in formal education. This includes 11.4% in primary education, 8.8% in secondary education, and 5.9% pursuing tertiary education.

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

Aldgate-Stirling has 152 active public transport stops, all serving buses. These are covered by 49 routes offering 1,282 weekly passenger trips in total. Transport accessibility is moderate, with residents located an average of 430 meters from the nearest stop. Most residents commute outwards daily. Car use dominates at 90%, while bus usage stands at 6%. Vehicle ownership averages 1.9 per dwelling, higher than the regional norm.

According to the 2021 Census, 19.4% of residents work from home, possibly due to COVID-19 conditions. Service frequency across all routes is 183 trips per day on average, equating to around 8 weekly trips per stop. A map accompanies this data, displaying the 100 nearest stops to the area's centerpoint.

Aldgate - Stirling's residents boast exceedingly positive health performance metrics with very low prevalence of common health conditions across all age groups

Aldgate - Stirling's health outcomes show excellent results based on AreaSearch's assessment of mortality rates and chronic condition prevalence. The area has a very low prevalence of common health conditions across all age groups. Approximately 63% of the total population (11,964 people) have private health cover, compared to 52.7% in Greater Adelaide and the national average of 55.7%.

Asthma and arthritis were found to be the most common medical conditions, affecting 8.0% and 7.8% of residents respectively. A total of 70.1% of residents declared themselves completely clear of medical ailments, compared to 67.9% in Greater Adelaide. The under-65 population demonstrates better than average health outcomes. The area has 21.3% of residents aged 65 and over (4,018 people), which is higher than the 19.3% in Greater Adelaide. Health outcomes among seniors are particularly strong, with national rankings broadly in line with the general population.

Aldgate - Stirling ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics

Aldgate-Stirling had a below-average cultural diversity, with 81.8% of its population born in Australia, 93.3% being citizens, and 94.9% speaking English only at home. Christianity was the main religion, comprising 37.0% of people in Aldgate-Stirling. Judaism was overrepresented, making up 0.2%, compared to 0.1% across Greater Adelaide.

The top three ancestry groups were English (33.9%), Australian (25.6%), and Scottish (8.7%). Notably, German (7.1%) and Welsh (0.9%) were also overrepresented compared to regional averages of 5.1% and 0.6%, respectively.

Aldgate - Stirling hosts a notably older demographic compared to the national average

The median age in Aldgate - Stirling is 44 years, which is notably higher than Greater Adelaide's average of 39 years and also exceeds the Australian median of 38 years. Compared to the Greater Adelaide average, the 45-54 age cohort is significantly over-represented at 15.0% locally, while the 25-34 age group is under-represented at 6.6%. Between the 2021 Census and the present, the 15 to 24 age group has increased from 11.3% to 13.2%, while the 75 to 84 cohort has grown from 5.6% to 7.5%. Conversely, the 5 to 14 age group has declined from 14.2% to 13.1%. Population forecasts for 2041 indicate substantial demographic changes in Aldgate - Stirling. The 85+ age cohort is projected to increase dramatically by 475 people (134%), from 355 to 831. The aging population trend is clear, with those aged 65 and above comprising 53% of the projected growth. Conversely, the 15 to 24 and 0 to 4 age cohorts are expected to experience population declines.