Aldgate

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

Analysis of ABS population figures for the surrounding region, combined with address records verified by AreaSearch since the Census, indicates the population of the suburb of Aldgate is approximately 3,577 as of May 2026. This represents an addition of 106 people (3.1%) relative to the 2021 Census, which recorded 3,471 individuals. This shift is calculated from the resident population of 3,577, estimated by AreaSearch using the latest ABS ERP release from June 2025 alongside 4 validated new addresses added after the Census. This population size results in a density of 425 persons per square kilometer, which offers plenty of space per resident and opportunity for subsequent expansion. Overseas migration was the primary driver of population growth, accounting for roughly 71.0% of the total population gains in recent times.

AreaSearch utilizes projections from the ABS and Geoscience Australia for individual SA2 zones, published in 2024 using 2022 as the baseline. For SA2 zones lacking this data, and for periods after 2032, regional and LGA projections by age bracket from the SA State Government (released in 2023 and utilizing 2021 data) are applied, adjusted via weighted aggregation of growth rates from the LGA to the SA2 level. In terms of future demographics, the suburb of Aldgate is projected to experience growth slightly below the national median, with aggregated SA2 projections estimating an increase of 273 residents by 2041, representing a total expansion of 7.6% over the 16 years.

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

According to AreaSearch evaluations of ABS building permits distributed from statistical data, the suburb of Aldgate has recorded an average of roughly 4 new home approvals annually, with approximately 21 residential approvals over the 5 financial years from FY-21 to FY-25 and 7 during the current FY-26. Because an average of 3.8 individuals moved to the area for every constructed home during the 5 financial years from FY-21 to FY-25, demand is outpacing supply, which generally drives up prices and intensifies buyer competition, while new dwellings carry an average build value of $651,000, indicating developers are targeting the high-end residential sector. Furthermore, commercial building permits worth $5.2 million were registered during the current financial year, highlighting the residential focus of the locality.

Relative to Greater Adelaide, the suburb of Aldgate displays significantly lower construction volumes, sitting 89.0% below the metropolitan average per capita. This constrained supply generally underpins demand and supports values for pre-existing houses. This rate is similarly below the national benchmark, reflecting a mature market and highlighting potential planning constraints. Furthermore, all recent building activity has focused on detached residences, preserving the low-density landscape and providing spacious homes geared toward families. A ratio of 892 people for every residential permit highlights the quiet, low-scale nature of local construction activity.

Future forecasts indicate the suburb of Aldgate will add 273 residents by 2041, based on the latest quarterly estimate from AreaSearch. If current building rates do not accelerate, housing supply may fail to match population growth, potentially worsening buyer competition and supporting upward price movements.

Aldgate has emerging levels of nearby infrastructure activity, ranking in the 21stth percentile nationally

Local infrastructure projects, major works, and planning policies play a major role in regional performance. AreaSearch has identified no projects likely to influence this location. Major projects in the broader region include the South Eastern Freeway Upgrade, Adelaide Public Transport Capacity and Access, Adelaide's Inner And Outer Ring Route Capacity Improvements, and the New Mount Barker Hospital, with relevant details provided below.

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Employment performance in Aldgate ranks among the strongest 15% of areas evaluated nationally

The suburb of Aldgate has a highly educated workforce with a strong concentration of professionals, an unemployment rate of only 2.3%, and an estimated job growth of 4.6% over the last year, based on AreaSearch compilations of statistical data. As of March 2026, there are 1,960 working residents, and the unemployment rate is 1.5% below the Greater Adelaide average of 3.8%, while participation in the labor force matches the metropolitan average of 66.6%. Census data indicates a moderate 21.2% of the workforce worked from home, though this figure reflects the influence of pandemic restrictions.

The primary sectors employing local residents are health care & social assistance, professional & technical, and education & training. The suburb of Aldgate shows a notable concentration in professional & technical services, with its employment share reaching 1.8 times the metropolitan average. Conversely, manufacturing is underrepresented, employing only 3.7% of the local workforce compared to 7.0% across Greater Adelaide. The residential character of the area results in limited local employment opportunities, as shown by comparing the count of Census working residents to the total resident population.

Based on AreaSearch analysis of SALM and ABS data for the broader statistical area, employment rose by 4.6% and the labor force grew by 4.6% over the 12 months ending March 2026, leading to a 0.2 percentage point increase in the unemployment rate. Over the same period, Greater Adelaide recorded employment growth of 4.2% and labor force growth of 4.0%, alongside a 0.2 percentage point decrease in unemployment. National employment forecasts from May-25 by Jobs and Skills Australia provide further context on future demand in the suburb of Aldgate. These five and ten-year forecasts have been applied to the local workforce mix to project growth. While national employment is expected to grow by 6.6% over five years and 13.7% over ten years, trends vary across different industries. Applying these sector-specific forecasts to the local profile suggests employment in the suburb of Aldgate could grow by 7.2% over five years and 14.6% over ten years, using a simple weighted extrapolation that does not incorporate local population forecasts.

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

The suburb of Aldgate records a median taxpayer income of $60,897 and an average of $86,199, according to postcode-level ATO data compiled by AreaSearch for the 2023 financial year. These figures are very high on a national scale, comparing to a median of $54,808 and an average of $66,852 across Greater Adelaide. Adjusting for a Wage Price Index increase of 10.17% since the 2023 financial year, current estimates point to approximately $67,090 for median and $94,965 for average incomes as of March 2026. According to Census data, household, family, and individual incomes are all high, placing between the 78th and 91st percentiles nationally. The largest earnings bracket consists of 29.2% of residents (1,044 people) earning between $1,500 and $2,999 weekly, which is similar to the wider region where this group accounts for 31.8%. High affluence is evident, with 41.8% of taxpayers earning more than $3,000 per week, which helps support local premium retail and service businesses. After paying for housing, residents keep 89.4% of their income, indicating high purchasing power, and the area ranks in the 9th decile on the SEIFA index.

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

The housing stock in the suburb of Aldgate at the time of the latest Census consisted of 100.0% detached houses and no other dwelling types, such as apartments, semi-detached, or alternative housing formats, compared to the Adelaide metropolitan breakdown of 75.2% detached houses and 24.9% other dwellings. Homeownership was highly prevalent at 46.1%, with the remaining properties occupied by residents with a mortgage (47.9%) or renting (5.9%). The median monthly mortgage payment was $2,200, which is significantly higher than the metropolitan Adelaide average of $1,562, while the median weekly rent stood at $500, compared to the regional average of $320. Nationally, mortgage payments in the suburb of Aldgate exceed the Australian average of $1,863, and weekly rents are also well above the national median of $375.

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

Families make up the majority of households at 85.4%, consisting of couples with children at 43.2%, couples without children at 33.6%, and single-parent households at 8.4%. The remaining 14.6% are non-family households, which consist of single-person households at 13.5% and group households at 0.5%. The median household size is 2.8 people, which is larger than the Greater Adelaide average of 2.5.

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

Educational attainment in the suburb of Aldgate is high compared to broader averages, with 48.9% of residents aged 15 and over holding a university degree, compared to 25.7% in South Australia and 28.9% across Greater Adelaide. This concentration of degrees positions the population well for knowledge-intensive roles. Bachelor degrees are the most common qualification at 30.9%, followed by postgraduate degrees at 12.3% and graduate diplomas at 5.7%. Vocational education is held by 23.6% of residents aged 15 and over, with 11.0% holding advanced diplomas and 12.6% holding certificates.

Participation in education is high, with 30.5% of the population enrolled in an educational institution. This includes 12.1% attending primary school, 9.3% in secondary school, and 5.7% enrolled in tertiary education.

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

Public transport services in the suburb of Aldgate include 20 active bus stops. These stops are served by 23 routes, which provide 503 passenger trips each week. Transport accessibility is moderate, with residents living an average of 453 meters from the nearest stop. The area is primarily residential, and most workers commute out of the suburb, with private cars being the main transport mode at 92% and buses used by 6% of commuters. Vehicle ownership stands at an average of 1.9 cars per household, which is above the metropolitan average. At the 2021 Census, 21.2% of residents worked from home, which may have been influenced by pandemic conditions.

Service frequency across all routes averages 71 trips per day, which is equivalent to approximately 25 weekly trips for each transport stop.

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

Health data shows positive outcomes for the suburb of Aldgate, based on AreaSearch assessments of mortality rates and chronic disease frequency, with low rates of common health issues across all age brackets. Private health insurance is highly prevalent, covering approximately 61% of the population (2,182 people), compared to 52.7% across Greater Adelaide and a national average of 55.7%.

Asthma and arthritis are the most common medical conditions, affecting 8.2% and 7.2% of residents respectively, while 70.7% of the population reported no chronic health issues, compared to 67.9% across Greater Adelaide. Health indicators for residents under 65 are better than average. Residents aged 65 and older make up 22.8% of the population (815 people), which is higher than the Greater Adelaide average of 19.2%. Health profiles for these senior residents are positive, with national comparisons aligning closely with the general population.

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

The suburb of Aldgate has lower cultural diversity metrics than average, with 81.4% of residents born in Australia, 93.9% holding citizenship, and 95.9% speaking only English at home. Christianity is the main religion, practiced by 37.5% of residents. Judaism shows the most notable relative concentration, accounting for 0.1% of the population, which matches the 0.1% average for Greater Adelaide.

The top three ancestral backgrounds reported in the suburb of Aldgate are English at 33.9% (higher than the regional average of 27.8%), Australian at 25.8%, and Scottish at 8.9%. There are also differences in other ethnic groups: Polish ancestry is represented at 1.4% (compared to 1.0% regionally), Welsh at 1.0% (compared to 0.6%), and German at 6.8% (compared to 5.1%).

Aldgate hosts a notably older demographic compared to the national average

The median age in the suburb of Aldgate is 45 years, which is older than the Greater Adelaide average of 39 years and the national average of 38 years. The 65 to 74 age group is well represented at 13.1% of the population relative to Greater Adelaide, while the 25 to 34 age bracket is less common at 4.2%. Since the 2021 Census, the 15 to 24 age bracket has increased from 11.9% to 14.4%, and the 75 to 84 bracket rose from 5.9% to 7.7%. Conversely, the 25 to 34 age group decreased from 5.3% to 4.2%. Projections suggest the age structure will change by 2041. The 85 and over cohort is expected to grow by 132%, adding 94 residents to reach a total of 166. Residents aged 65 and over are projected to account for 52% of the overall population growth, highlighting the aging trend. Meanwhile, the 15 to 24 and 0 to 4 age brackets are expected to decrease in size.