Aldinga

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

Aldinga's population was around 17,559 as of February 2026. This reflected an increase of 1,636 people since the 2021 Census, which reported a population of 15,923 people. The change was inferred from the estimated resident population of 16,777 from the ABS in June 2024 and an additional 285 validated new addresses since the Census date. This level of population resulted in a density ratio of 497 persons per square kilometer. Aldinga's population growth rate of 10.3% since the 2021 census exceeded that of its SA3 area (6.4%) and SA4 region, indicating it was a leader in regional growth. Overseas migration contributed approximately 50.1% of overall population gains during recent periods, although all drivers including natural growth and interstate migration were positive factors.

AreaSearch adopted 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 were used, released in 2023 and based on 2021 data, with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Demographically, Aldinga is expected to grow by 1,417 persons to 2041, reflecting an increase of 3.6% over the 17-year period based on the latest annual ERP population numbers.

AreaSearch assessment of residential development activity positions Aldinga among the top 25% of areas assessed nationwide

Aldinga has seen approximately 122 new homes approved annually over the past five financial years, totalling 613 homes. As of FY-26, 70 approvals have been recorded. On average, each dwelling constructed between FY-21 and FY-25 accommodates 1.3 new residents per year, indicating a balanced supply and demand market with stable conditions. The average construction cost value of new homes is $319,000.

In the current financial year, there have been $121.8 million in commercial approvals, demonstrating strong commercial development momentum. Compared to Greater Adelaide, Aldinga has 54.0% higher new home approvals per capita, offering greater choice for buyers. New developments consist of 86.0% standalone homes and 14.0% attached dwellings, maintaining the area's traditional low-density character focused on family homes. With around 138 people per approval, Aldinga reflects a developing area with population forecasts indicating an increase of 635 residents by 2041.

Current construction levels are expected to meet housing demand adequately, creating favourable conditions for buyers and potentially enabling growth that exceeds current forecasts.

Aldinga has limited levels of nearby infrastructure activity, ranking in the 4thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 13 projects likely affecting this region. Notable initiatives include Aldinga Master Planned Community by Villawood Properties, Aldinga Sports Park Master Plan Redevelopment, Main South Road Duplication Project (Stage 2) from Aldinga to Sellicks Beach, and Aldinga Central Shopping Centre Expansion. The following list details those most relevant.

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

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Employment conditions in Aldinga remain below the national average according to AreaSearch analysis

Aldinga has a skilled labor force with notable representation in essential services sectors. Its unemployment rate was 4.8% as of September 2025. This rate is 0.8% higher than Greater Adelaide's rate of 3.9%.

Employment growth over the past year was estimated at 4.4%. As of September 2025, there were 8,463 residents employed in Aldinga. Workforce participation was broadly similar to Greater Adelaide's 66.4%. According to Census responses, only 11.1% of residents worked from home as of September 2025.

The key industries of employment among residents are health care & social assistance, construction, and retail trade. Aldinga has a particular employment specialization in construction, with an employment share of 1.5 times the regional level. In contrast, professional & technical services employ only 4.2% of local workers, lower than Greater Adelaide's 7.3%. Over the 12 months to September 2025, employment increased by 4.4%, while labor force increased by 3.7%, leading to a decrease in unemployment rate by 0.7 percentage points. In comparison, Greater Adelaide saw employment grow by 3.0%, labor force expand by 2.9%, and unemployment fall by 0.1 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 indicate that Aldinga's employment should increase by 6.3% over five years and 13.3% over ten years, based on a simple weighting extrapolation of industry-specific projections against the local employment profile.

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

AreaSearch's latest postcode level ATO data for financial year 2023 shows that Aldinga SA2 has lower income compared to national averages. The median income is $49,068 and the average is $57,482. In contrast, Greater Adelaide has a median income of $54,808 and an average of $66,852. Based on Wage Price Index growth of 8.8% since financial year 2023, estimated incomes as of September 2025 are approximately $53,386 (median) and $62,540 (average). Census 2021 data indicates that Aldinga's household, family, and personal incomes all fall between the 21st and 23rd percentiles nationally. Income distribution shows that the $1,500 - $2,999 bracket dominates with 31.4% of residents (5,513 people), similar to the surrounding region at 31.8%. Housing affordability pressures are severe, with only 82.8% of income remaining, ranking at the 20th percentile.

Aldinga is characterized by a predominantly suburban housing profile, with ownership patterns similar to the broader region

Aldinga's dwellings, as per the latest Census, were 91.4% houses and 8.6% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Adelaide metro's 75.2% houses and 24.9% other dwellings. Home ownership in Aldinga was at 29.8%, with the rest either mortgaged (44.7%) or rented (25.6%). The median monthly mortgage repayment was $1,400, below Adelaide metro's average of $1,562. Median weekly rent was $320, matching Adelaide metro's figure but significantly lower than the national average of $375. Nationally, Aldinga's mortgage repayments were notably lower at $1,400 compared to Australia's average of $1,863.

Aldinga has a typical household mix, with a fairly typical median household size

Family households account for 70.7% of all households, including 27.8% couples with children, 26.8% couples without children, and 15.4% single parent families. Non-family households make up the remaining 29.3%, with lone person households at 26.5% and group households comprising 2.7% of the total. The median household size is 2.5 people, which matches the Greater Adelaide average.

Educational outcomes in Aldinga fall within the lower quartile nationally, indicating opportunities for improvement in qualification attainment

The area's university qualification rate is 17.3%, significantly lower than the Australian average of 30.4%. Bachelor degrees are the most common at 12.0%, followed by postgraduate qualifications (3.1%) and graduate diplomas (2.2%). Vocational credentials are prevalent, with 43.4% of residents aged 15+ holding them - advanced diplomas at 10.6% and certificates at 32.8%. Educational participation is high, with 29.2% currently enrolled in formal education.

This includes 12.4% in primary education, 7.7% in secondary education, and 3.4% pursuing tertiary education.

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

Aldinga has 115 active public transport stops, all of which are bus stops. These stops are served by 11 different routes that together facilitate 621 weekly passenger trips. Residents have excellent access to these services, with an average distance of 199 meters to the nearest stop. Most residents commute outwards from Aldinga, and cars remain the primary mode of transport for 90% of them. On average, there are 1.5 vehicles per dwelling in the area. According to the 2021 Census, only 11.1% of residents work from home, which may be influenced by COVID-19 conditions.

The service frequency averages 88 trips per day across all routes, resulting in approximately five weekly trips per stop. A map accompanies this data, highlighting the 100 nearest stops to the location's centrepoint.

Health performance in Aldinga is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts

Aldinga faces significant health challenges according to AreaSearch's assessment. Mortality rates and chronic condition prevalence are high, with common health conditions prevalent across both younger and older age cohorts. Private health cover is very low at approximately 48% of the total population (~8,358 people), compared to 52.7% in Greater Adelaide and a national average of 55.7%.

The most common medical conditions are mental health issues and arthritis, impacting 10.2% and 9.5% of residents respectively. Conversely, 64.1% of residents declare themselves completely clear of medical ailments, compared to 67.9% in Greater Adelaide. Working-age population faces notable health challenges with elevated chronic condition rates. The area has 20.7% of residents aged 65 and over (3,627 people), higher than the 19.3% in Greater Adelaide. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.

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

Aldinga's cultural diversity was found to be below average, with 79.4% of its population born in Australia. The majority were citizens, standing at 89.8%, and most spoke English only at home, at a rate of 95.9%. Christianity was the predominant religion in Aldinga, accounting for 31.1% of people.

Notably, the 'Other' category comprised just 0.5% of Aldinga's population, compared to 1.8% across Greater Adelaide. In terms of ancestry, the top groups were English (37.5%), Australian (27.6%), and Scottish (7.8%). Some ethnic groups showed notable differences in representation: German at 5.1% versus the regional average of 5.1%, Dutch at 1.7% compared to 1.2%, and Welsh at 0.7% against 0.6%.

Aldinga's population is slightly older than the national pattern

The median age in Aldinga is 40 years, similar to Greater Adelaide's average of 39 years but somewhat older than Australia's median age of 38 years. The 55-64 age group comprises 13.4% of Aldinga's population, higher than Greater Adelaide's percentage, while the 25-34 cohort is less prevalent at 10.7%. Post-2021 Census data shows the 75 to 84 age group grew from 5.6% to 7.4% of Aldinga's population. Conversely, the 5 to 14 cohort declined from 14.5% to 12.9%, and the 45 to 54 group dropped from 13.3% to 11.9%. Population forecasts for 2041 indicate significant demographic changes in Aldinga. The 85+ age group is projected to grow by 128% (464 people), reaching 826 from 361. Notably, the combined 65+ age groups are expected to account for 80% of total population growth, reflecting Aldinga's aging demographic profile. In contrast, the 15 to 24 and 0 to 4 cohorts are forecasted to experience population declines.