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 is approximately 19,039 as of May 2026. This figure represents an increase of 831 people since the 2021 Census, which reported a population of 18,208. The growth is inferred from ABS data showing an estimated resident population of 19,039 in June 2025 and an additional 25 validated new addresses since the Census date. This results in a population density ratio of 162 persons per square kilometer. Aldgate - Stirling's population grew by 4.6% between the 2021 Census and May 2026, which is within 2.9 percentage points of the state's growth rate (7.5%). Overseas migration contributed approximately 72.4% of overall population gains during recent periods.

AreaSearch uses 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 are adopted with adjustments made using a method of weighted aggregation of population growth from LGA to SA2 levels. By 2041, Aldgate - Stirling's population is projected to increase by just below the median for national statistical areas, adding 1,383 persons over the 16-year period and reflecting a total gain of 7.3%.

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

Aldgate - Stirling has seen approximately 40 dwelling approvals per year. Over the past five financial years, from FY21 to FY25, around 203 homes were approved, with another 30 approved so far in FY26. On average, about 3.3 people have moved to the area each year for every dwelling built during this period.

This indicates substantial demand outstripping supply, potentially leading to heightened buyer competition and pricing pressures. Developers are targeting the premium market segment, with new dwellings valued at an average of $500,000. In FY26, there have been $24.4 million in commercial development approvals, showing moderate levels of commercial activity compared to Greater Adelaide. Aldgate - Stirling has significantly less development activity overall, being 79.0% below the regional average per person. This constrained new construction typically reinforces demand and pricing for existing dwellings.

The area's recent development has been entirely comprised of detached dwellings, maintaining its low-density nature and attracting space-seeking buyers. As of now, there are approximately 447 people in the area for every dwelling approval. Looking ahead, Aldgate - Stirling is projected to grow by 1,383 residents by 2041, according to the latest AreaSearch quarterly estimate. Development appears to be keeping pace with this projected growth, but increasing competition among buyers can be expected as the population expands.

Aldgate - Stirling has emerging levels of nearby infrastructure activity, ranking in the 31stth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified three projects that may affect this region. Major initiatives include South Eastern Freeway Upgrade, Adelaide Public Transport Capacity and Access, Adelaide's Inner And Outer Ring Route Capacity Improvements, and New Mount Barker Hospital. The following details those most relevant.

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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 strong representation in professional services. The unemployment rate is 1.8%, lower than the national average. Over the past year, employment growth was estimated at 5.0%.

As of December 2025, 10,840 residents are employed, with an unemployment rate of 2.0%, below Greater Adelaide's rate of 3.8%. Workforce participation is 70.7%, comparable to Greater Adelaide's 66.0%. 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.

The area has a notable concentration in professional & technical jobs, at 1.7 times the regional average, but retail trade shows lower representation at 7.4%. Local employment opportunities appear limited based on Census data comparison of working population vs resident population. Between December 2024 and December 2025, employment levels increased by 5.0%, labour force grew by 5.3%, leading to a slight rise in unemployment (0.3 percentage points). In contrast, Greater Adelaide saw employment grow by 4.2% and unemployment fall by 0.3 percentage points. National employment forecasts from Jobs and Skills Australia, published in May-25, project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Aldgate - Stirling's employment mix suggests local employment should increase by 7.0% over five years and 14.4% over ten years, though this is a simple extrapolation for illustrative purposes only.

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

In AreaSearch's latest postcode level ATO data released for financial year 2023, Aldgate - Stirling SA2's median income among taxpayers is $62,222 with an average of $87,511. This is 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 10.17% since financial year 2023, current estimates would be approximately $68,550 (median) and $96,411 (average) as of March 2026. According to the 2021 Census, household, family, and personal incomes all rank highly in Aldgate - Stirling, between the 78th and 83rd percentiles nationally. The earnings profile shows that the $1,500 - 2,999 bracket dominates with 29.9% of residents (5,692 people), aligning with regional levels where this cohort likewise represents 31.8%. Higher earners represent a substantial presence with 36.9% exceeding $3,000 weekly. After housing costs, residents retain 88.7% of 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 structure, as per the latest Census, had 98.1% houses and 1.8% other dwellings (semi-detached, apartments, 'other' dwellings), contrasting 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, exceeding 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 exceeded the Australian average of $1,863, while rents surpassed the national figure of $375.

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

Family households constitute 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 surpasses 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. This substantial educational advantage positions the area strongly for knowledge-based opportunities. Bachelor degrees are the most common at 28.9%, followed by postgraduate qualifications at 11.5% and graduate diplomas at 5.5%.

Trade and technical skills also feature prominently, with 27.2% of residents aged 15 and above holding vocational credentials – advanced diplomas at 11.1% and certificates at 16.1%. Educational participation is notably high, 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 of which are bus stops. These stops are served by 49 different routes that together facilitate 1,282 weekly passenger trips. The area's transport accessibility is rated as moderate, with residents typically living 430 meters from the nearest stop. As a predominantly residential zone, most inhabitants commute outward. Cars remain the primary mode of transportation at 90%, with buses used by 6% of residents. On average, there are 1.9 vehicles per dwelling, exceeding the regional norm.

According to the 2021 Census, 19.4% of residents work from home, a figure that may be influenced by COVID-19 conditions. The service frequency averages 183 trips daily across all routes, translating to roughly 8 weekly trips per individual 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

AreaSearch's assessment of Aldgate - Stirling shows excellent health outcomes. Mortality rates and chronic condition prevalence are very low across all age groups. Private health cover is exceptionally high at approximately 63% of the total population (12,051 people), compared to 52.7% in Greater Adelaide and a national average of 55.7%.

The most common medical conditions are asthma and arthritis, affecting 8.0% and 7.8% of residents respectively. 70.1% of residents report no medical ailments, higher than the 67.9% across Greater Adelaide. Under-65s have better-than-average health outcomes. The area has 21.5% of residents aged 65 and over (4,089 people), higher than Greater Adelaide's 19.2%. Health outcomes among seniors are strong, aligning with national rankings for 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 below average cultural diversity, with 81.8% born in Australia, 93.3% being citizens, and 94.9% speaking English only at home. Christianity was the main religion, comprising 37.0%. Judaism was overrepresented at 0.2%, compared to 0.1% in Greater Adelaide.

Top ancestry groups were English (33.9%), Australian (25.6%), and Scottish (8.7%). German (7.1%) and Welsh (0.9%) were notably overrepresented, while Polish was similarly represented at 1.0%.

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

The median age in Aldgate - Stirling is notably higher at 44 years compared to Greater Adelaide's average of 39 years, which is also above the Australian median of 38 years. In comparison with the Greater Adelaide average, the 45-54 age cohort is significantly over-represented locally at 14.9%, while the 25-34 age group is under-represented at 6.2%. Between the 2021 Census and present, the population aged 15 to 24 has increased from 11.3% to 13.7%, while those aged 75 to 84 have risen from 5.6% to 7.6%. Conversely, the 25-34 age group has decreased from 7.4% to 6.2%, and the 5-14 age group has dropped from 14.2% to 13.1%. Population forecasts for 2041 indicate substantial demographic changes in Aldgate - Stirling, with the 85+ age cohort projected to surge dramatically by 495 people (136%), from 365 to 861. The aging population trend is clear, with those aged 65 and above comprising 53% of projected growth. Conversely, the 0-4 and 65-74 age cohorts are expected to experience population declines.