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This analysis uses ABS Statistical Areas Level 2 (SA2) boundaries, which can materially differ from Suburbs and Localities (SAL) even when sharing similar names.
SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (e.g., census and ERP).
Suburbs and Localities (SAL) represent commonly-used suburb/locality names (postal-style areas) and may use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.
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Sales Activity
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Population
St Agnes - Ridgehaven has seen population growth performance typically on par with national averages when looking at short and medium term trends
As of May 2026, St Agnes - Ridgehaven's population is approximately 13,586, reflecting a growth of 425 people since the 2021 Census. This increase represents a 3.2% rise from the previous population of 13,161. The change is inferred from the estimated resident population of 13,531 in June 2025 and an additional 78 validated new addresses since the Census date. This results in a population density ratio of 1,104 persons per square kilometer, comparable to averages seen across locations assessed by AreaSearch. Over the past decade, St Agnes - Ridgehaven has shown resilient growth patterns with a compound annual growth rate of 0.8%, outperforming the SA3 area. Overseas migration primarily drove population growth, contributing approximately 88.7% of overall population gains during recent periods.
AreaSearch employs 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, based on 2021 data and adjusted using weighted aggregation from LGA to SA2 levels. Considering projected demographic shifts, a population increase of just below the median is expected for St Agnes - Ridgehaven, with an anticipated growth of 1,351 persons by 2041, reflecting a total gain of 9.5% over the 16-year period based on latest annual ERP population numbers.
Frequently Asked Questions - Population
Development
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 have been approved, with an additional 69 approved in FY26 so far. On average, about 1.1 new residents per year are associated with each dwelling constructed during this period.
The average construction value of new properties is approximately $241,000. This financial year has seen around $2.4 million in commercial approvals, indicative of the area's residential character. Compared to Greater Adelaide, St Agnes - Ridgehaven exhibits moderately higher development activity, being 28.0% above the regional average per person over the five-year period.
This maintains good buyer choice while supporting existing property values. New developments consist of approximately 83.0% standalone homes and 17.0% attached dwellings, preserving the area's suburban nature with a focus on detached housing attracting space-seeking buyers. With around 156 people per dwelling approval, St Agnes - Ridgehaven is characterized as a low-density area. According to AreaSearch quarterly estimates, the population is projected to increase by 1,296 residents by 2041. At current development rates, new housing supply should comfortably meet demand, providing favorable conditions for buyers and potentially supporting growth beyond current population projections.
Frequently Asked Questions - Development
Development applications around St Agnes - Ridgehaven
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| Lodged | Address | Description | Type | Distance | Status |
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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
Infrastructure
St Agnes - Ridgehaven has limited levels of nearby infrastructure activity, ranking in the 13thth percentile nationally
Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified six projects likely impacting the area. Key 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.
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Frequently Asked Questions - Infrastructure
SA Water Capital Work Delivery Contracts 2024-28
SA Water's record $3.3 billion capital delivery program for the 2024-28 regulatory period, covering water and wastewater infrastructure across South Australia. The program targets water main replacements, sewerage network upgrades, dam upgrades, water tank refurbishments, and treatment process upgrades across metropolitan and regional areas. A central $1.5 billion component supports the South Australian Premier's Housing Roadmap, expanding network capacity to unlock up to 40,000 new allotments, with major focus on Adelaide's northern growth corridors including Angle Vale, Riverlea, and Roseworthy. Six major framework partners (Fulton Hogan Utilities, John Holland and Guidera O'Connor JV, McConnell Dowell and Diona JV, BMD, Diona, and Leed Engineering and Construction) are delivering works across approximately 120 projects. In Year 1 (to June 2025), $681.6 million in capital was invested. The program runs to June 2028.
Northern Adelaide Irrigation Scheme
The Northern Adelaide Irrigation Scheme (NAIS) is a recycled water scheme delivering high-quality treated water from the Bolivar Wastewater Treatment Plant to agribusinesses across the Northern Adelaide Plains. Stage 1 infrastructure was built to provide up to 12 gigalitres per year of climate-independent recycled water for horticulture, floriculture, fruit and nut orchards, table and wine grapes, and high-value broad-acre crops, with the network designed to enable future expansion to 20 gigalitres. Key infrastructure includes an advanced water recycling plant at Bolivar, a transfer pipeline, pump stations, an above-ground earth-banked storage at Korunye, managed aquifer recharge, and a distribution network with farm-gate connection points. Construction began in 2018 and the scheme is operational. As of 2025 around 35 per cent of the contracted volume has been sold, and SA Water has been undertaking a review to assess current and forecast demand and identify potential opportunities for the scheme.
Gawler Line Electrification & Level Crossing Removals
State and federal government project to electrify the 42km Gawler rail line from Adelaide CBD to Gawler, with 25kV AC overhead wiring, new signalling systems, upgrade of 14 stations, and activation of 13 pedestrian crossings. Electrified passenger services commenced June 2022. The complementary Ovingham Level Crossing Removal ($231M) replaced the high-risk Torrens Road crossing with a new overpass, public plaza and upgraded Ovingham Railway Station, completing in late 2023.
Tea Tree Gully Sustainable Sewers Program
SA Water program to transfer about 4,700 properties in the City of Tea Tree Gully from a council run Community Wastewater Management System with on site septic tanks to a modern sewer network. The project includes staged construction of new wastewater mains, gravity and low pressure sewer connections, new pump stations and on property works, followed by decommissioning and backfilling of septic tanks. Delivery is being rolled out in zones between 2022 and 2028, improving service reliability, reducing overflows and supporting long term water and public health outcomes for the north eastern suburbs of Adelaide.
O-Bahn City Access Project
Completed SA Government public transport project extending the O-Bahn from Gilberton into Adelaide city via centrally aligned priority bus lanes on Hackney Road and a dedicated 670 m bus-only tunnel to Grenfell Street. The works improved bus travel time reliability, reduced Inner Ring Route congestion, reconfigured Rundle Road and East Terrace, and added pedestrian and cycling improvements including a shared path and bridge over the River Torrens.
SA Housing Trust Maintenance Contracts Review and Service Program
Statewide maintenance and service contracts for SA Housing Trust public housing properties, covering reactive maintenance, vacancy restoration and minor works across metropolitan and regional South Australia. The program is delivered by Spotless Facility Services, RTC Facilities Maintenance and Torrens Facility Management. A 2024 SA Government review examined payment, timeliness, dispute resolution and contract performance issues, and the government provided additional funding to accelerate maintenance and upgrades on vacant public housing homes.
Adelaide Public Transport Capacity and Access
State-led program work to increase public transport capacity and access to, through and within central Adelaide. Current work is focused on the City Access Strategy (20-year movement plan for the CBD and North Adelaide) and the State Transport Strategy program, which together will shape options such as bus priority, interchange upgrades, tram and rail enhancements, and better first/last mile access.
Adelaide Level Crossing Removal Planning Program
A joint Australian and South Australian Government program to conduct planning studies at priority at-grade level crossing locations across metropolitan Adelaide, and establish a ten-year Level Crossing Removal Program. Adelaide has 126 at-grade level crossings where boom gates can be closed for up to 25% of peak traffic periods. Priority sites under active planning include Cormack Road (Wingfield), Kings Road (Parafield), and Park Terrace (Salisbury). The program commenced in early 2022 and is expected to be completed by late 2026, with the first major removal project - Curtis Road, Munno Para - announced in May 2025 with a $250 million joint funding commitment and construction starting by 2027.
Employment
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 the past year, with an estimated employment growth of 1.0%. As of December 2025, there were 6,824 residents employed, and the unemployment rate was 1.3% lower than Greater Adelaide's rate of 3.8%.
Workforce participation was somewhat below standard at 61.7%, compared to Greater Adelaide's 66.0%. According to Census responses, only 9.9% of residents worked from home. The dominant employment sectors were health care & social assistance, retail trade, and education & training.
However, professional & technical services were under-represented at 5.9% compared to Greater Adelaide's 7.3%. Employment opportunities locally may be limited as indicated by the count of Census working population vs resident population. Between December 2024 and December 2025, employment levels increased by 1.0%, and labour force increased by 1.0%, keeping the unemployment rate relatively stable at 2.6%. By comparison, Greater Adelaide recorded employment growth of 4.2% and labour force growth of 3.9%, with unemployment falling to 3.5%. 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 St Agnes - Ridgehaven's employment mix, local employment should increase by approximately 6.4% over five years and 13.5% over ten years, based on simple weighting extrapolation for illustrative purposes.
Frequently Asked Questions - Employment
Income
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 income in St Agnes - Ridgehaven SA2 is below the national average. The median income is assessed at $55,772 while the average income stands at $62,164. In contrast, Greater Adelaide's figures show a median income of $54,808 and an average income of $66,852. Based on Wage Price Index growth of 10.17% since financial year 2023, current estimates would be approximately $61,444 (median) and $68,486 (average) as of March 2026. According to the 2021 Census figures, 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 (4,524 residents), which aligns with the broader area where this cohort likewise 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.
Frequently Asked Questions - Income
Housing
St Agnes - Ridgehaven is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership
St Agnes - Ridgehaven's dwelling structure, as per the latest Census, had 83.9% houses and 16.1% other dwellings (semi-detached, apartments, 'other' dwellings), 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 St Agnes - Ridgehaven 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, and rents were substantially below the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
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 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.
Frequently Asked Questions - Households
Local Schools & Education
Educational attainment in St Agnes - Ridgehaven aligns closely with national averages, showing typical qualification patterns and performance metrics
In St Agnes-Ridgehaven trail region, 22.5% of residents aged 15+ hold university degrees, compared to Australia's 30.4%. This gap suggests potential for educational development and skill enhancement. Bachelor degrees are the most common (15.8%), followed by postgraduate qualifications (4.2%) and graduate diplomas (2.5%). Vocational credentials are prominent among residents aged 15+, with 37.6% holding such qualifications, including advanced diplomas (11.0%) and certificates (26.6%).
A significant portion of the population is actively pursuing formal education, with 9.3% in primary, 5.7% in secondary, and 4.5% in tertiary education.
Frequently Asked Questions - Education
Schools Detail
Nearby Services & Amenities
Transport
Transport servicing is good compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility
The analysis of public transport in St Agnes - Ridgehaven indicates there are 88 active transport stops currently operating. These stops serve a mix of bus routes, totalling 29 individual routes that facilitate 2,090 weekly passenger trips combined. The accessibility to transport is rated as good, with residents typically residing approximately 204 meters from the nearest stop. As primarily residential, most commuting in this area is outward-bound. The dominant mode of transportation remains cars at 85%, while buses account for 11%. On average, there are 1.4 vehicles per dwelling.
According to the 2021 Census data, which may reflect COVID-19 conditions, only 9.9% of residents work from home. The service frequency averages 298 trips daily across all routes, equating to roughly 23 weekly trips per individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
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, which consists of around 6847 people.
This compares to 52.7% across Greater Adelaide, with a 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, which totals around 3241 people, higher than the 19.2% in Greater Adelaide. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.
Frequently Asked Questions - Health
Cultural Diversity
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 exhibited cultural diversity above the 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 population showed an overrepresentation in 'Other' religions, at 1.8%, compared to Greater Adelaide's 1.8%.
Ancestry-wise, the top groups were English (32.1%), Australian (25.3%), and Scottish (6.6%). Notably, German ancestry was higher at 6.5% than the regional average of 5.1%, Italian was similarly represented at 5.2%, and Hungarian slightly higher at 0.4% compared to 0.3%.
Frequently Asked Questions - Diversity
Age
St Agnes - Ridgehaven's median age exceeds the national pattern
St Agnes - Ridgehaven has a median age of 42, which exceeds Greater Adelaide's figure of 39 and is higher than the national norm of 38. The age group of 75-84 shows strong representation at 9.6%, compared to Greater Adelaide, while the 25-34 cohort is less prevalent at 12.1%. According to the 2021 Census, the 35 to 44 age group has grown from 12.4% to 13.9% of the population. Conversely, the 45 to 54 cohort has declined from 12.9% to 11.5%, and the 65 to 74 group dropped from 11.8% to 10.7%. Demographic modeling suggests that St Agnes - Ridgehaven's age profile will evolve significantly by 2041. The 85+ group is projected to grow by 88%, reaching 912 people from 485, leading the demographic shift. Those aged 65 and above are expected to comprise 52% of the projected growth. Meanwhile, the 55 to 64 cohort grows by a modest 1%, adding 9 people.