Aldgate

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

Based on AreaSearch's analysis of ABS population updates for the area, as of November 2025, Aldgate's estimated population is around 3,562. This reflects an increase of 91 people since the 2021 Census, which reported a population of 3,471. The change is inferred from AreaSearch's estimate of 3,551 residents following examination of ABS' latest ERP data release in June 2024 and validation of three new addresses since the Census date. This results in a density ratio of 423 persons per square kilometer. Overseas migration contributed approximately 71.0% 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. Demographic trends suggest a population increase just below the median of Australian statistical areas by 2041, with Aldgate expected to increase by 260 persons, reflecting an 8.9% total increase over the 17 years.

Residential development activity is lower than average in Aldgate according to AreaSearch's national comparison of local real estate markets

AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, shows Aldgate has seen around 4 new homes approved each year over the past five financial years. This totals an estimated 20 homes. So far in FY-26, 1 approval has been recorded. An average of 6.6 new residents per year arrives per dwelling constructed between FY-21 and FY-25.

Supply is substantially lagging demand, which generally means heightened buyer competition leading to pricing pressures. New dwellings are developed at an average value of $651,000, indicating a developer focus on the premium segment with upmarket properties. This financial year has seen $5.2 million in commercial approvals registered, suggesting the area's residential character. Relative to Greater Adelaide, Aldgate records markedly lower building activity, 89.0% below regional average per person. Limited new supply generally supports stronger demand and values for established properties.

This level is also below average nationally, reflecting the area's maturity and possible planning constraints. Recent development has been entirely comprised of detached dwellings, maintaining the area's traditional low density character with a focus on family homes appealing to those seeking space. The estimated count of 1200 people in the area per dwelling approval reflects its quiet, low activity development environment. Looking ahead, Aldgate is expected to grow by 316 residents through to 2041 (from the latest AreaSearch quarterly estimate). At current development rates, housing supply may struggle to match population growth, potentially heightening buyer competition and supporting price increases.

Aldgate has emerging levels of nearby infrastructure activity, ranking in the 22ndth percentile nationally

No changes can influence a region's performance more than modifications to local infrastructure, major projects, and planning initiatives. In total, zero projects have been identified by AreaSearch that could potentially impact the area. Key projects include South Eastern Freeway Upgrade, South Eastern Freeway Upgrade, Adelaide Public Transport Capacity and Access, and Adelaide's Inner And Outer Ring Route Capacity Improvements, with the following list detailing those likely to be most relevant.

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Employment conditions in Aldgate demonstrate exceptional strength compared to most Australian markets

Aldgate has a highly educated workforce with professional services being strongly represented. The unemployment rate in the area is 2.3%, with an estimated employment growth of 2.7% over the past year, according to AreaSearch's aggregation of statistical area data.

As of September 2025, there are 1,958 residents employed, while the unemployment rate is 1.6% lower than Greater Adelaide's rate of 3.9%. The workforce participation rate in Aldgate is 65.1%, compared to Greater Adelaide's 61.7%. Key industries of employment among residents include health care & social assistance, professional & technical services, and education & training. Notably, the area has a high concentration in professional & technical services with employment levels at 1.8 times the regional average.

However, manufacturing has limited presence with only 3.7% employment compared to the regional average of 7.0%. The predominantly residential area appears to offer limited local employment opportunities, as indicated by the count of Census working population versus resident population. In the past 12 months, employment increased by 2.7%, while labour force increased by 3.2%, leading to a rise in unemployment by 0.4 percentage points. In comparison, Greater Adelaide recorded employment growth of 3.0% and a fall in unemployment by 0.1 percentage points. State-level data from 25-Nov shows that South Australia's employment grew by 1.19% year-on-year, adding 10,710 jobs, with the state unemployment rate at 4.0%. This compares favourably to the national unemployment rate of 4.3%, with South Australia's employment growth outpacing the national average of 0.14%. Jobs and Skills Australia's national employment forecasts from May-25 suggest that national employment is expected to expand by 6.6% over five years and 13.7% over ten years. Applying these industry-specific projections to Aldgate's employment mix suggests local employment should increase by 7.2% over five years and 14.6% over ten years, although this is a simple weighting extrapolation for illustrative purposes and does not take into account localised population projections.

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 for financial year 2023 shows that Aldgate has high incomes nationally. The median income is $60,897 and the average is $86,199. In Greater Adelaide, the median income is $54,808 and the average is $66,852. Based on Wage Price Index growth of 8.8% since financial year 2023, current estimates for Aldgate are approximately $66,256 (median) and $93,785 (average) as of September 2025. According to the 2021 Census, incomes in Aldgate rank highly nationally, between the 78th and 91st percentiles for households, families, and individuals. The income bracket of $1,500 - 2,999 dominates with 29.2% of residents (1,040 people), similar to the metropolitan region's 31.8%. A substantial number of higher earners exist, with 41.8% exceeding $3,000 weekly. After housing costs, residents retain 89.4% of their income. The area's SEIFA income ranking places it in the 9th decile.

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

As per the latest Census evaluation, Aldgate's dwelling structure consisted entirely of houses (100.0%) with no other dwellings recorded (0.0%). This contrasted with Adelaide metro's 95.2% houses and 4.8% other dwellings. Home ownership in Aldgate stood at 46.1%, with mortgaged dwellings at 47.9% and rented ones at 5.9%. The median monthly mortgage repayment was $2,200, significantly higher than Adelaide metro's average of $1,863. The median weekly rent in Aldgate was recorded at $500, substantially above the national figure of $375. Nationally, Aldgate's mortgage repayments were higher than the Australian average of $1,863.

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

Family households account for 85.4% of all households, including 43.2% that are couples with children, 33.6% that are couples without children, and 8.4% that are single parent families. Non-family households make up the remaining 14.6%, with lone person households at 13.5% and group households comprising 0.5% of the total. The median household size is 2.8 people, which is larger than the Greater Adelaide average of 2.6.

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

Aldgate's educational attainment is notably higher than broader benchmarks. Among residents aged 15+, 48.9% hold university qualifications, compared to 25.7% in South Australia (SA) and 28.9% in Greater Adelaide. Bachelor degrees are the most common at 30.9%, followed by postgraduate qualifications at 12.3% and graduate diplomas at 5.7%. Vocational pathways account for 23.6% of qualifications, with advanced diplomas at 11.0% and certificates at 12.6%.

Educational participation is high, with 30.5% of residents currently enrolled in formal education. This includes 12.1% in primary education, 9.3% in secondary education, and 5.7% pursuing tertiary education.

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

Transport analysis shows 20 active stops in Aldgate, all bus stops. These are served by 23 routes offering 503 weekly passenger trips combined. Accessibility is moderate with residents typically located 453 meters from the nearest stop.

Service frequency averages 71 trips per day across all routes, equating to around 25 weekly trips per stop.

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

Aldgate shows superior health outcomes for both younger and older age groups with low prevalence of common conditions. Approximately 61% of Aldgate's total population of 2,173 have private health cover, compared to Greater Adelaide's 55.5%. Nationally, the average is 55.7%.

The most prevalent medical conditions are asthma (8.2%) and arthritis (7.2%), with 70.7% reporting no medical ailments, compared to 68.5% in Greater Adelaide. Aldgate has a higher proportion of seniors aged 65 and over at 22.5% (801 people), compared to Greater Adelaide's 19.9%. Senior health outcomes are notably strong, outperforming the general population in health metrics.

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

Aldgate's cultural diversity was found to be below average. Its population was predominantly Australian-born, with 81.4% having been born in Australia and 93.9% being citizens. English was the primary language spoken at home by 95.9%.

Christianity was the dominant religion, comprising 37.5% of Aldgate's population. While Judaism was present, it made up only 0.1%, which was similar to Greater Adelaide's figure of 0.1%. The top three ancestral groups were English (33.9%), Australian (25.8%), and Scottish (8.9%). There were notable differences in the representation of certain ethnic groups: Polish was overrepresented at 1.4% compared to the regional average of 0.8%, Welsh at 1.0% versus 0.7%, and German at 6.8% compared to Greater Adelaide's 8.2%.

Aldgate hosts a notably older demographic compared to the national average

Aldgate's median age is 45 years, which is higher than Greater Adelaide's average of 39 and exceeds the national average of 38. The age group of 65-74 has a strong representation in Aldgate at 13.3%, compared to Greater Adelaide. The 25-34 cohort is less prevalent in Aldgate at 4.6%. Post-2021 Census data shows the 15 to 24 age group grew from 11.9% to 13.7% of the population, while the 75 to 84 cohort increased from 5.9% to 7.3%. Conversely, the 5 to 14 cohort declined from 15.4% to 14.2%. Demographic modeling suggests Aldgate's age profile will significantly evolve by 2041. The 85+ cohort is projected to grow by 136%, adding 92 residents to reach 160. In contrast, numbers in the 65 to 74 age range are expected to fall by 27%.