St Agnes - Ridgehaven
Statistical Area - sa2

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 13,467 as of November 2025, according to AreaSearch's analysis. This figure represents an increase of 306 people, a 2.3% rise from the 2021 Census count of 13,161 residents. The change is inferred from ABS estimates: 13,460 in June 2024 and an additional 54 validated new addresses since the Census date. This results in a population density ratio of 1,094 persons per square kilometer, roughly inline with averages across locations assessed by AreaSearch. Over the past decade, St Agnes - Ridgehaven exhibited resilient growth patterns, with a compound annual growth rate of 0.7%, outperforming its SA3 area. Overseas migration drove recent population growth, contributing approximately 86.3% of overall gains.

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, based on 2021 data and adjusted using weighted aggregation methods from LGA to SA2 levels. Demographic shifts suggest a population increase just below median statistical area levels nationwide by 2041, with St Agnes - Ridgehaven expected to grow by 1,477 persons, marking a 10.7% total gain over the 17 years.

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 28 approved so far in FY26. On average, each dwelling constructed over these years accommodates about 1.1 new residents per year.

This suggests a balance between supply and demand, contributing to stable market dynamics. The average construction value of new properties is approximately $241,000. In terms of commercial approvals, the area has seen around $2.4 million in FY26, indicating its residential character.

Comparatively, St Agnes - Ridgehaven shows moderately higher development activity than Greater Adelaide, with a 28.0% increase per person over the five-year period. This maintains good buyer choice while supporting existing property values. The new developments consist of 83.0% standalone homes and 17.0% attached dwellings, preserving the area's suburban nature and attracting space-seeking buyers. With around 156 people per dwelling approval, St Agnes - Ridgehaven is considered a low density area. Population forecasts indicate that St Agnes - Ridgehaven will gain approximately 1,435 residents by 2041. Given 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 emerging levels of nearby infrastructure activity, ranking in the 22ndth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified six projects likely impacting the area. Key projects include Luminaire Estate - Residential Development, Tea Tree Gully Sustainable Sewers Program, Grove Way and Golden Way Intersection Upgrade, 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.

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

St Agnes - Ridgehaven has a skilled workforce with an unemployment rate of 2.4% as of June 2025. This is below Greater Adelaide's rate of 4.0%.

The estimated employment growth over the past year was 1.3%. There are 6,934 residents in work. Workforce participation is similar to Greater Adelaide's at 61.7%.

Dominant employment sectors include health care & social assistance, retail trade, and education & training. Professional & technical services are under-represented with only 5.9% of the workforce compared to 7.3% in Greater Adelaide. The area offers limited local employment opportunities as indicated by Census data. During the year to June 2025, employment levels increased by 1.3% and labour force by 1.3%, keeping unemployment relatively stable at 1.6%. Jobs and Skills Australia's national employment forecasts from May 2025 project a five-year growth of 6.6% and ten-year growth of 13.7%. Applying these projections to St Agnes - Ridgehaven's employment mix suggests local growth of approximately 6.4% over five years and 13.5% over ten years.

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

AreaSearch's latest postcode level ATO data for financial year 2022 shows that St Agnes - Ridgehaven has an income below the national average. The median income is $52,955 and the average income stands at $59,461. In contrast, Greater Adelaide has a median income of $52,592 and an average income of $64,886. Based on Wage Price Index growth of 12.83% since financial year 2022, current estimates for St Agnes - Ridgehaven would be approximately $59,749 (median) and $67,090 (average) as of September 2025. According to the 2021 Census figures, household, family and personal incomes in St Agnes - Ridgehaven rank modestly, between the 35th and 39th percentiles. The largest income segment comprises 33.3% earning $1,500 - $2,999 weekly (4,484 residents), similar to the broader area where this cohort also 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

The dwelling structure in St Agnes - Ridgehaven, as per the latest Census evaluation, consisted of 83.9% houses and 16.1% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Adelaide metro's 88.6% houses and 11.3% other dwellings. Home ownership in St Agnes - Ridgehaven was at 38.4%, with the remaining dwellings either mortgaged (43.6%) or rented (18.0%). The median monthly mortgage repayment in the area was $1,517, aligning with the Adelaide metro average, while the median weekly rent figure was $330, also matching Adelaide metro's figures. Nationally, St Agnes - Ridgehaven's median monthly mortgage repayments were significantly lower than the Australian average of $1,863, and 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 constitute 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 comprise the remaining 28.8%, with lone person households at 26.9% and group households making up 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

St Agnes - Ridgehaven's educational qualifications trail Australian benchmarks; 22.5% of residents aged 15+ hold university degrees compared to Australia's 30.4%. Bachelor degrees are the most prevalent (15.8%), followed by postgraduate qualifications (4.2%) and graduate diplomas (2.5%). Vocational credentials are prominent, with 37.6% of residents aged 15+ holding them; advanced diplomas account for 11.0% and certificates for 26.6%. A substantial 24.4% of the population actively pursues formal education: 9.3% in primary, 5.7% in secondary, and 4.5% in tertiary education.

The area's five schools have a combined enrollment of 1,433 students, with typical Australian school conditions (ICSEA: 1040) and balanced educational opportunities. These schools focus exclusively on primary education; secondary options are available in surrounding areas. School places per 100 residents stand at 10.7, below the regional average of 16.7, indicating some students may attend schools in adjacent areas.

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

The analysis shows that in St Agnes - Ridgehaven there are currently 88 active public transport stops. These stops offer a variety of bus services. In total, these stops are served by 27 different routes which collectively facilitate around 2,070 weekly passenger trips.

The accessibility to public transport is considered good with residents on average being located about 204 meters away from the nearest stop. On an average day across all routes, there are approximately 295 trips made, which translates to roughly 23 weekly trips per individual stop.

Health performance in St Agnes - Ridgehaven is well below average with prevalence of common health conditions notable across both younger and older age cohorts

Health data indicates significant health challenges in St Agnes - Ridgehaven, with high prevalence of common conditions across both younger and older age groups. Approximately half (50%) of the total population (~6,666 people) have private health cover, lower than the national average of 55.3%.

The most prevalent medical conditions are arthritis affecting 9.8% of residents and mental health issues impacting 9.0%. A higher proportion, 63.4%, report being free from medical ailments compared to Greater Adelaide's 66.3%. The area has a larger senior population at 23.6% (3,171 people) compared to Greater Adelaide's 21.2%. Senior health outcomes present challenges broadly aligned with the general population's health profile.

The level of cultural diversity witnessed in St Agnes - Ridgehaven was found to be above average when compared nationally for a number of language and cultural background related metrics

St Agnes-Ridgehaven exhibited above-average cultural diversity, with 12.5% of its population speaking a language other than English at home and 23.3% born overseas. Christianity was the predominant religion in St Agnes-Ridgehaven, comprising 45.9% of its population. Notably, the 'Other' religious category represented 1.8%, slightly higher than Greater Adelaide's average of 2.1%.

The top three ancestry groups were English (32.1%), Australian (25.3%), and Scottish (6.6%). Certain ethnic groups showed notable variations: German was overrepresented at 6.5% compared to the regional average of 5.8%, Hungarian remained consistent at 0.4%, and Italian was slightly underrepresented at 5.2% versus Greater Adelaide's 5.5%.

St Agnes - Ridgehaven hosts an older demographic, ranking in the top quartile nationwide

The median age in St Agnes - Ridgehaven is 42, which is slightly higher than Greater Adelaide's figure of 39 and significantly higher than the national norm of 38. The age group of 75-84 is strongly represented at 9.4%, compared to Greater Adelaide, while the 15-24 cohort is less prevalent at 10.7%. According to the 2021 Census, the 35 to 44 age group has increased from 12.4% to 13.6% of the population. Conversely, the 45 to 54 cohort has decreased from 12.9% to 11.6%, and the 65 to 74 group has dropped from 11.8% to 10.6%. By 2041, demographic modeling suggests that St Agnes - Ridgehaven's age profile will change significantly. The 85+ group is projected to grow by 101%, reaching 954 people from the current figure of 475. This growth is led by those aged 65 and above, who will comprise 53% of the projected population growth. Meanwhile, the 55 to 64 cohort is expected to grow by a modest 1%, with an increase of 11 people.