St Agnes is in Tea Tree Gully LGA, SA, postcode 5097, with population 4,233.
There are enough stretched or weaker signals here that you should assume trade-offs rather than a clean story. Use compare mode to see whether the downside is price, local quality, or weaker momentum before treating it as a target suburb.
Transport coverage adds a practical access signal.
Houses to Q1'26 · Units to 2024 — house and unit medians are released on separate cycles, so their latest period can differ.
Indicative cashflow is interest-only and excludes tax — use the calculator for a full projection.
Owners with a mortgage repay a median of $1,500/mo, while renters pay about $2,427/mo — renting runs $927/mo higher on these medians.
1 of 2 schools here operate published enrolment zones (catchments). Zone boundaries set eligibility — check the official source for the exact catchment. Not enrolment advice.
St Agnes is a smaller residential area in South Australia within the Tea Tree Gully local government area (postcode 5097). It is home to about 4,233 residents, with a settled mid-life population and a median age of 44. Households earn a median income of $81K per year, with an average household size of 2.4 people. Recent annual estimates show population movement staying broadly stable across the broader catchment, with population growth running at +0.5% year-on-year at the LGA level. SA employment has moved +2.1% year-on-year in the official Jobs and Skills Australia NERO series, which provides the broader jobs backdrop for this suburb. SA also had 23 Commonwealth-backed major projects under construction, 2 underway, and 11 in planning as at 2 October 2024, which is useful as a broader delivery backdrop rather than a suburb-specific project count. The most common occupations are professionals, clerical & administrative, technicians & trades. Employment in the area leans toward healthcare and retail trade. The top ancestries reported are English, Australian, German.
St Agnes has a median house price of $845,000, which has moved lower by 5.2% year-on-year. Units have a median price of $485,000 (+15.5% YoY). The current median weekly rent is $560. This gives a gross rental yield of approximately 3.4%. The median monthly mortgage repayment is $1,500.
St Agnes is served by 2 schools, including 2 primary. The average ICSEA score is 1042, which is around the national average of 1,000. Public transport access includes 28 bus stops. The crime rate in the Tea Tree Gully LGA is moderate at 5,528 incidents per 100,000 population.
From an investment perspective, The gross rental yield works out to roughly 3.4%, which reads as moderate yield. Property prices are near the state median ($845K/$950K). The price-to-income ratio of 10.4x is considered stretched. House prices have moved -5.2% year-on-year. Population growth of +0.5% year-on-year points to stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.
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St Agnes has enough direct local evidence for a first-pass decision.
QuickProperty mixes release files, Census baselines, and matched local services on this page. Read the status panel before treating every metric as equally fresh.
Official quarterly house sales workbooks; units remain on ABS fallback coverage
Use current rent as a starting signal, not as a fixed underwriting truth.
Schools, transport, and hospitals are useful as presence signals, but they still have different source cadences.
St Agnes is in the Tea Tree Gully Local Government Area, SA, postcode 5097. Council-level context for Tea Tree Gully LGA (suburb mix, population, rent, and price coverage) is available on the QuickProperty LGA page.
The current median house price in St Agnes, SA is $845K, based on the latest available sales data from state Valuers General offices and ABS Data by Region.
The median weekly rent in St Agnes is $560/wk, based on the current market rent dataset. The current rent signal is income-stretched rent market.
Income-stretched rent market: Weekly rent screens at about 51% of annual income. Use this as a suburb screening signal before comparing candidates or modelling a purchase; the matching rent ranking can provide broader market context.
QuickProperty's investment signals for St Agnes show: Moderate Yield, Near Median, Stretched. These are computed from price, rent, income, and population data — not an opaque score.
Property prices come from state Valuers General offices and ABS Data by Region. Demographics are from ABS Census 2021. School ICSEA scores are from ACARA. Crime statistics are from state police agencies. Transport data is sourced from GTFS feeds.
Property prices update quarterly. RBA macro indicators update with each deploy. Demographics are from Census 2021. School ICSEA scores are from ACARA 2025.