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Suburb profile ·Tea Tree Gully LGA · SA ·5097

St Agnes SA 5097

St Agnes is in Tea Tree Gully LGA, SA, postcode 5097, with population 4,233.

Median house $892K +10.7% YoY
Median rent $580/wk Income-stretched rent market
Gross yield 3.4% Below investor band
Population 4,233 4K local footprint
Schools 2 Matched school context
Decision trust

Strong evidence

St Agnes has enough direct local evidence for a first-pass decision.

Direct signals include Property prices, Market rent, Crime, and Schools. Missing or weaker areas are still shown so the page does not overstate precision.

7
Available
0
Verify
1
Missing
Income-stretched rent market

Weekly rent screens at about 52% of annual income. Income and rent use area-level data, so household-level affordability can differ.

Open matching rent ranking
Development momentum

396 latest-year approvals in Tea Tree Gully, +0.0% YoY; population +0.5% YoY (0.7% 5yr).

Open development signals
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Current status
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Source & freshness

QuickProperty mixes release files, Census baselines, and matched local services on this page. Read the status panel before treating every metric as equally fresh.

PRICE POSTURE
Prices come from release-based suburb series.

Release-based suburb price series, not a live market feed

RENT POSTURE
Rent is using a state market dataset when available.

Use current rent as a starting signal, not as a fixed underwriting truth.

SERVICE POSTURE
Service coverage is matched locally, not inferred nationally.

Schools, transport, and hospitals are useful as presence signals, but they still have different source cadences.

Data status
Property prices
ABS Data by Region and processed state datasets · 2025-Q4 · Release-based series
medium stability · manual file · snapshot · release-based
Available
Market rent
SA Housing Authority / CBS · Q4 2025 · State market dataset
medium stability · automated · every update · quarterly
Available
Crime
State crime dataset · 2024-25 · Area-level release dataset
medium stability · mixed acquisition · mixed refresh · mixed
Available
Schools
ACARA 2025 · 2 schools matched
medium stability · manual file · snapshot · annual
Available
Hospitals
AIHW · No linked local hospital coverage
medium stability · manual file · snapshot · mixed
Missing
Transport
GTFS feeds · 28 matched stops/stations
medium stability · manual file · snapshot · mixed
Available
Population growth
ABS ERP · 2025 · Annual estimate series
stable source · automated · every update · annual
Available
Building approvals
ABS Building Approvals · 2026 · Annual release series
stable source · automated · every update · monthly
Available
Available means a direct local dataset is linked. Verify means coverage exists but freshness or precision is weaker, such as Census rent fallback or low-confidence hospital matching.
Rent signal

Income-stretched rent market

Weekly rent screens at about 52% of annual income. Snapshot rent $580/wk.

Income and rent use area-level data, so household-level affordability can differ.

Source level Suburb Confidence Medium Period Q4 2025
$580/wk
Mar 2025 → Dec 2025 · 4 periods
SA private rent report · suburb grain · Dec 2025
$632
$544
Mar 2025Dec 2025
Evidence depth
Strong evidence

St Agnes has enough direct local evidence for a first-pass decision.

Direct signals include Property prices, Market rent, Crime, and Schools. Missing or weaker areas are still shown so the page does not overstate precision.

Next step

Use compare to test the suburb against another candidate, then validate financial assumptions in the calculator where available.

Direct
7

Property prices, Market rent, Crime, Schools

Verify
0

No fallback or lower-precision signals flagged.

Missing
1

Hospitals

Decision intelligence
Growth-momentum

St Agnes currently reads as a growth-momentum candidate.

Recent price movement shows visible market momentum. Transport coverage adds a practical access signal. No major decision caution is visible from the current evidence layer.

Recommended next step

Compare it against a contrasting suburb before turning it into a decision.

Why it fits

Recent price movement shows visible market momentum. Transport coverage adds a practical access signal.

What to check

No major caution is visible beyond the normal source checks.

Decisive gaps

No decisive evidence gap was detected from the current inputs.

Compare status

Compare-ready

Why people look here Intent
  • Buyers want a quick sense of price, schools, and neighbourhood scale before getting lost in data.
  • Investors want to know whether rent, yield, and affordability broadly support the suburb story.
  • Researchers want one place that ties property, demographics, transport, and services together.
Local signals Mixed
Schools: 2 matched, including Ardtornish Primary School, St Agnes School P - 6.
Crime: 5,528 per 100k at the Tea Tree Gully LGA level.
Transport: 28 matched stops/stations across local feeds.

Price history

HousesUnits

Full data detail

St Agnes SA

Postcode 5097 · Tea Tree Gully LGA

St Agnes is a smaller suburb in South Australia within the Tea Tree Gully local government area (postcode 5097). With a population of 4,233, the suburb has an established demographic with 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.

The median house price in St Agnes is $892,000, having surged 10.7% over the past year. Units have a median price of $485,000 (+15.5% YoY). The current median weekly rent is $580. 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, St Agnes offers a gross rental yield of 3.4%, rated as moderate yield. Property prices are near the state median ($892K/$950K). The price-to-income ratio of 11.0x is considered stretched. House prices have moved +10.7% year-on-year. Population growth of +0.5% year-on-year indicates stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.

Investment signals
Rental Yield3.4% Moderate Yield
Price vs State$892K/$950K Near Median
Affordability11.0x Stretched
Price Momentum+10.7% Rising
Pop. Growth+0.5% Stable
Development+0% Steady
Income (ATO 2022-23)
Median income$57,585
Mean income$63,629
Earners8,448
YoY change+4.3%
SEIFA index (ABS) — 1 = most disadvantaged, 10 = most advantaged
Advantage6/10
Education5/10
Economic4/10
Disadvantage5/10
Latest prices (state valuers)
Median house
$892K
10.7% YoY
Median unit
$485K
15.5% YoY
Census 2021 (ABS)
Median rent /wk
$340
Population
4,233
Demographics
Median age44
Household size2.4
HH income /wk$1,557
Personal income /wk$746
Mortgage /mth$1,500
Crime (Tea Tree Gully LGA)
Crime rate (per 100k)5,528
Total incidents234
Transport
Bus stops28
Schools (2)
Avg ICSEA1042
Total students713
Government2
Ardtornish Primary SchoolPrimary · Government · ICSEA 1044
St Agnes School P - 6Primary · Government · ICSEA 1039
Population growth (Tea Tree Gully LGA)
Population (2025)105,120
5-year growth+0.7% CAGR
YoY change+0.5%
Development (Tea Tree Gully LGA)
Approvals (2026)396
Houses277
Units119
YoY change+0%
Data status
Property prices
Processed price datasets · 2025-Q4
Available
Market rent
State rent dataset · Q4 2025 · Market dataset
Available
Crime
State crime dataset · 2024-25 · LGA-level dataset
Available
Schools
ACARA 2025 · 2 schools matched
Available
Hospitals
AIHW
Missing
Transport
GTFS · Stop-level feed
Available
Population growth
ABS ERP · 2025 · Annual estimate
Available
Building approvals
ABS Building Approvals · 2026 · Annual series
Available
Available means a local dataset is present. Verify means coverage exists but location confidence is limited.
Data: 2025-Q4
Sources: ABS Census 2021 · ABS dwelling prices · State Valuers General · ATO income · ACARA schools · AIHW hospitals · GTFS · state police

St Agnes FAQ

Common questions
  1. What LGA is St Agnes in?

    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.

  2. What is the median house price in St Agnes?

    The current median house price in St Agnes, SA is $892K, based on the latest available sales data from state Valuers General offices and ABS Data by Region.

  3. What is the typical weekly rent in St Agnes?

    The median weekly rent in St Agnes is $580/wk, based on the current market rent dataset. The current rent signal is income-stretched rent market.

  4. What does the rent signal say about St Agnes?

    Income-stretched rent market: Weekly rent screens at about 52% 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.

  5. Is St Agnes a good investment?

    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.

  6. Where does QuickProperty get its data for St Agnes?

    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.

  7. How often is the St Agnes data updated?

    Property prices update quarterly. RBA macro indicators update with each deploy. Demographics are from Census 2021. School ICSEA scores are from ACARA 2025.