St Agnes at a glance
Median house
$845,000
+10.1% year on year
Median unit
$237,600
Walk score
6
Very car dependent
Population
4,233
Median age 44
The brief
What to know about St Agnes.
The postcode for St Agnes is 5097 (SA), part of Greater Adelaide.
The median house price in St Agnes is $845,000.
St Agnes (5097) sits in the Tea Tree Gully region of South Australia. The median house here is $845,000, above the South Australia median of around $720K. Prices have moved +10.1% over the past year, well clear of the South Australia average (5%).
St Agnes has roughly 4,233 residents, with an established, older skew. Households are predominantly owner-occupied. Daily life is car-dependent: most residents drive to work, school and the shops.
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Day to day
What it’s like to live here.
St Agnes scores 6/100 on walkability, which makes it car-dependent with limited public transport. Plan for two cars in a typical household, especially if work isn't local.
Summer days here average around 28°C (warm), winter mornings around 7°C (cool). Annual rainfall lands at about 448mm. Data comes from the Bureau of Meteorology's Adelaide (Kent Town) station, 11.1km away.
Schooling within or near the suburb covers 11 government primary, 2 government secondary, 2 Catholic, 3 independent.
Who lives here
Demographics.
The 2021 Census put St Agnes's population at 4,233, with a median age of 44. That sits as an established, older skew. Households are predominantly owner-occupied (82% own, 17% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (72% family households, 27% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
4,233
Median age
44
Family households
72%
Lone person
27%
Demographics data as of May 2026· ABS 2021 Census
Houses change hands at $845,000 on a typical sale, above the South Australia median. Units come in around $237,600, roughly 72% below the house median. The last 12 months delivered strong growth (+10.1%) — well clear of the long-run average for the state.
For buyers
A 20% deposit on the median house works out to roughly $169,000. Prices sit above the South Australia median, so plan for a stretched deposit and shop carefully on borrowing capacity.
For sellers
Twelve-month growth is +10.1%, supporting confident pricing at the upper end of recent comparables.
Market
The price of a home here.
Median house price
$845,000
+10.1% over the past year. Median unit price $237,600.
Sales data as of July 2026· sales-sa
Rental and ownership
Weekly rent (house)
$630/wk
Weekly rent (unit)
$490/wk
Owner occupied
82%
Renter occupied
17%
At a deeper level
$845,000
+10.1% annual growth
$237,600
4,233
Median age: 44
Rental data as of March 2026· rental-sa
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For investors
Investment overview.
Gross rental yield on houses sits at 3.88% (median rent $630/wk against a $845,000 price tag). Units yield 10.72% gross, often the better cash-flow play for first-time investors. Renter share is modest (17%), so the rental pool is smaller and tenant demand can be patchier than in higher-density suburbs. The 12-month growth of +10.1% adds a capital-growth case on top of the yield.
Gross Yield (House)
Source: data.sa.gov.au · July 20263.88%
Based on $845,000 median
Gross Yield (Unit)
Source: data.sa.gov.au · July 202610.72%
Based on $237,600 median
Annual Growth (House)
Source: data.sa.gov.au · July 2026+10.1%
Year-on-year capital growth
Annual Growth (Unit)
Source: data.sa.gov.au · July 2026–
Year-on-year capital growth
Owner Occupancy
Source: ABS Census 2021 · May 202682%
Higher = more owner-occupier demand
Days on Market
Source: data.sa.gov.au · July 2026–
Lower = higher buyer demand
Gross rental yield is annual rent divided by purchase price, before expenses. It does not account for vacancy rates, management fees, maintenance, or financing costs. Use this as a starting point for further research.
5-year trajectory
at +10.1%/yr
2021
$522K
5-year change
+62%
2026
$845K
Trajectory derived from the current median compounded at the suburb’s annual growth rate, not raw sale-by-sale history.
Safety
Crime and safety.
173
total offences in 2025-26
Top offence categories
Crime statistics are reported at LGA level and may cover a broader area than this suburb.
Source: State Police Open Data
Crime data as of June 2026· State Police Open Data
Getting around
Walkability.
6
0
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in St Agnes.
Local schools for St Agnes
View the catchment for each school to find out more.
Government School Catchment
St Agnes School P - 6
Ardtornish Primary School
Ridgehaven Primary School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
448 mm
Hottest Month (avg max)
28.0°C
Coldest Month (avg min)
7.0°C
Monthly Rainfall (mm)
Weather data from BOM station Adelaide (Kent Town) (11 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About St Agnes.
- What is the median house price in St Agnes?
- The median house price in St Agnes, SA 5097 is $845,000. The median unit price is $237,600. Annual growth is +10.1%.
- What is the St Agnes postcode?
- St Agnes is in the 5097 postcode, in SA, in the City of Tea Tree Gully region.
- Where is St Agnes?
- St Agnes is a suburb of Adelaide, in SA 5097. It is part of the Greater Adelaide area, in the City of Tea Tree Gully region.
- What is the average rent in St Agnes?
- The median weekly rent for houses is $630, for units it's $490.
- What schools are in St Agnes?
- There are 20 schools serving St Agnes on this page, including St Agnes School P - 6, Ardtornish Primary School, Ridgehaven Primary School.
- How walkable is St Agnes?
- St Agnes has a Walk Score of 6 out of 100, highly car-dependent. transit score 0, bike score 100.
- What suburbs are near St Agnes?
- St Agnes is close to Ridgehaven, Tea Tree Gully, Vista, Redwood Park, Hope Valley.
- What is the population of St Agnes?
- The population of St Agnes is approximately 4,233 (2021 Census). The median age is 44.
For Sale
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
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