St Agnes - Ridgehaven

St Agnes - Ridgehaven has seen population growth performance typically on par with national averages when looking at short and medium term trends

St Agnes - Ridgehaven's population was around 13,942 as of February 2026. This figure represents an increase of 781 people since the 2021 Census, which reported a population of 13,161. The growth is inferred from ABS estimated resident population data of 13,425 in June 2024 and an additional 77 validated new addresses since the Census date. This results in a population density ratio of 1,133 persons per square kilometer. Over the past decade, St Agnes - Ridgehaven has shown resilient growth patterns with a compound annual growth rate of 0.7%, outperforming the SA3 area. Overseas migration contributed approximately 86.3% 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 weighted aggregation methods. Based on projected demographic shifts, St Agnes - Ridgehaven is expected to grow by 1,477 persons to reach a population of approximately 15,419 by 2041, reflecting an increase of around 6.9% over the 17-year period.

Recent residential development output has been above average within St Agnes - Ridgehaven when compared nationally

St Agnes - Ridgehaven has recorded approximately 81 residential properties granted approval annually. Over the past five financial years, from FY21 to FY25, around 405 homes were approved, with an additional 49 approved so far in FY26. On average, each dwelling constructed over these years accommodates about 1.1 new residents per year.

This has resulted in a stable market dynamic, with no significant mismatch between supply and demand. The average construction cost of new properties is around $241,000. This financial year has seen $2.4 million in commercial approvals, indicating the area's predominantly residential character.

Comparatively, St Agnes - Ridgehaven shows moderately higher development activity than Greater Adelaide as a whole, with 28.0% more approvals per person over the past five years. This higher level of activity maintains good buyer choice while supporting existing property values. In terms of dwelling types, approximately 83.0% are standalone homes and 17.0% are attached dwellings, preserving the area's suburban nature and attracting space-seeking buyers. With around 156 people per dwelling approval, St Agnes - Ridgehaven exhibits characteristics of a low density area. According to AreaSearch's latest quarterly estimate, the area is projected to gain approximately 960 residents by 2041. At current development rates, new housing supply should comfortably meet demand, providing good conditions for buyers and potentially supporting growth beyond current population projections.

St Agnes - Ridgehaven has limited levels of nearby infrastructure activity, ranking in the 9thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified six projects that may impact this region. Notable projects include Tea Tree Gully Sustainable Sewers Program, Grove Way and Golden Way Intersection Upgrade, Luminaire Estate - Residential Development, and Golden Grove Neighbourhood Code Amendment. The following list details those most relevant:.

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

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

The labour market in St Agnes - Ridgehaven shows considerable strength compared to most other Australian regions

St Agnes - Ridgehaven has a skilled workforce with essential services sectors well represented. The unemployment rate was 2.5% in September 2025, lower than Greater Adelaide's rate of 3.9%. Employment growth over the past year was estimated at 1.2%.

As of that date, 6,827 residents were employed and workforce participation stood at 62.3%, compared to Greater Adelaide's 66.4%. According to Census responses, 9.9% of residents worked from home. Dominant employment sectors include health care & social assistance, retail trade, and education & training.

However, professional & technical services were under-represented with only 5.9% of the workforce compared to Greater Adelaide's 7.3%. The area appears to offer limited local employment opportunities. Between September 2024 and September 2025, employment levels increased by 1.2% and labour force grew by 1.2%, keeping unemployment relatively stable at 1.4%. By comparison, Greater Adelaide recorded employment growth of 3.0% and labour force growth of 2.9%, with unemployment falling to 3.8%. Jobs and Skills Australia's national employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years. Applying these projections to St Agnes - Ridgehaven's employment mix suggests local employment should increase by 6.4% over five years and 13.5% over ten years, though this is a simple weighting extrapolation for illustrative purposes only.

The area's income profile falls below national averages based on AreaSearch analysis

AreaSearch's latest postcode level ATO data for financial year 2023 shows that St Agnes - Ridgehaven SA2 has incomes below the national average. The median income is $55,772 and the average income stands at $62,164. In comparison, Greater Adelaide has a median income of $54,808 and an average income of $66,852. Based on Wage Price Index growth of 8.8% since financial year 2023, current estimates for St Agnes - Ridgehaven as of September 2025 would be approximately $60,680 (median) and $67,634 (average). According to the 2021 Census, household, family, and personal incomes in St Agnes - Ridgehaven rank modestly, between the 35th and 38th percentiles. The largest segment comprises 33.3% earning $1,500 - $2,999 weekly (4,642 residents), similar to the broader area where this cohort represents 31.8%. After housing costs, 85.8% of income remains for other expenses. The area's SEIFA income ranking places it in the 5th decile.

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

St Agnes - Ridgehaven dwelling structure, as per the latest Census, comprised 83.9% houses and 16.1% other dwellings (semi-detached, apartments, 'other' dwellings). This is compared to Adelaide metro's 75.2% houses and 24.9% other dwellings. Home ownership in St Agnes - Ridgehaven was 38.4%, with mortgaged dwellings at 43.6% and rented ones at 18.0%. The median monthly mortgage repayment was $1,517, below Adelaide metro's average of $1,562. Median weekly rent in the area was $330, compared to Adelaide metro's $320. Nationally, St Agnes - Ridgehaven's mortgage repayments were significantly lower than the Australian average of $1,863, while rents were substantially below the national figure of $375.

St Agnes - Ridgehaven has a typical household mix, with a lower-than-average median household size

Family households comprise 71.2% of all households, including 29.2% couples with children, 29.9% couples without children, and 11.2% single parent families. Non-family households account for the remaining 28.8%, with lone person households at 26.9% and group households comprising 2.0%. The median household size is 2.4 people, which is smaller than the Greater Adelaide average of 2.5.

Educational attainment in St Agnes - Ridgehaven aligns closely with national averages, showing typical qualification patterns and performance metrics

In St Agnes-Ridgehaven region, 22.5% of residents aged 15 years or older hold university degrees, compared to the Australian average of 30.4%. Bachelor degrees are the most common (15.8%), followed by postgraduate qualifications (4.2%) and graduate diplomas (2.5%). Vocational credentials are also prevalent, with 37.6% of residents aged 15 years or older holding such qualifications; advanced diplomas account for 11.0%, while certificates make up 26.6%. A significant portion of the population is actively engaged in education: 24.4% in total, including 9.3% in primary education, 5.7% in secondary education, and 4.5% pursuing tertiary education.

A substantial 24.4% of the population actively pursues formal education. This includes 9.3% in primary education, 5.7% in secondary education, and 4.5% pursuing tertiary education.

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

St Agnes - Ridgehaven has 88 active public transport stops, all of which are bus stops. These stops are served by 29 different routes that together facilitate 2,090 weekly passenger trips. The area's transport accessibility is deemed good, with residents typically located 204 meters from the nearest stop. As a predominantly residential area, most commuters travel outward. Cars remain the primary mode of transport at 85%, while buses account for 11%. On average, there are 1.4 vehicles per dwelling.

According to the 2021 Census, only 9.9% of residents work from home, which may reflect COVID-19 conditions. The service frequency averages 298 trips per day across all routes, translating to approximately 23 weekly trips per individual stop.

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

St Agnes - Ridgehaven faces significant health challenges based on AreaSearch's assessment of mortality rates and chronic condition prevalence. Common health conditions are somewhat prevalent across both younger and older age cohorts. The rate of private health cover is relatively low at approximately 50% of the total population (~7,026 people), compared to 52.7% across Greater Adelaide and the national average of 55.7%.

The most common medical conditions in the area are arthritis and mental health issues, impacting 9.8 and 9.0% of residents respectively. Meanwhile, 63.4% of residents declare themselves completely clear of medical ailments, compared to 67.9% across Greater Adelaide. Health outcomes among the working-age population are broadly typical. The area has 23.9% of residents aged 65 and over (3,326 people), which is 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.

In terms of cultural diversity, St Agnes - Ridgehaven records figures broadly comparable to the national average, as found in AreaSearch's assessment of a number of language and cultural background related metrics

St Agnes-Ridgehaven's cultural diversity was above average, with 12.5% speaking a language other than English at home and 23.3% born overseas. Christianity was the predominant religion, comprising 45.9%. The 'Other' category had similar representation to Greater Adelaide at 1.8%.

Top ancestral groups were English (32.1%), Australian (25.3%), and Scottish (6.6%). Notably, German ancestry was overrepresented at 6.5% compared to the regional average of 5.1%, Italian showed equal representation at 5.2%, and Hungarian had slightly higher representation at 0.4% versus 0.3%.

St Agnes - Ridgehaven's median age exceeds the national pattern

The median age in St Agnes - Ridgehaven is 42, which exceeds both Greater Adelaide's figure of 39 and the national norm of 38. The 75-84 age group comprises 9.5%, higher than Greater Adelaide's percentage, while the 25-34 cohort stands at 12.3%. According to the 2021 Census, the 35-44 age group has increased from 12.4% to 13.7%, but the 45-54 cohort has declined from 12.9% to 11.4%, and the 65-74 group has dropped from 11.8% to 10.6%. By 2041, demographic modeling projects significant changes in St Agnes - Ridgehaven's age profile. The 85+ group is expected to grow by 83%, reaching 954 people from the current 520. This growth will be led by those aged 65 and above, who are projected to comprise 61% of total population growth. Meanwhile, the 5-14 and 55-64 age groups are anticipated to experience population declines.