Aldinga at a glance
Median house
$879,800
-16.6% year on year
Median unit
$221,760
Walk score
18
Very car dependent
Population
764
Median age 49
The brief
What to know about Aldinga.
The postcode for Aldinga is 5173 (SA), part of Greater Adelaide.
The median house price in Aldinga is $879,800.
Aldinga (5173) sits in the Onkaparinga region of South Australia. The median house here is $879,800, above the South Australia median of around $720K. Prices have moved -16.6% over the past year, well behind the South Australia average (5%).
Aldinga has roughly 764 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.
Side by side
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Median, growth, schools, walkability, all in one view.
Day to day
What it’s like to live here.
Aldinga scores 18/100 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 6 government primary, 2 government secondary, 1 Catholic, 2 independent.
Who lives here
Demographics.
The 2021 Census put Aldinga's population at 764, with a median age of 49. That sits as an established, older skew. Households are predominantly owner-occupied (83% own, 15% rent), which shapes everything from school catchment stability to how often properties turn over. Lone-person households are notable here (40%), often a marker of unit-heavy stock and walkable infrastructure.
Population
764
Median age
49
Family households
58%
Lone person
40%
Demographics data as of May 2026· ABS 2021 Census
Houses change hands at $879,800 on a typical sale, above the South Australia median. Units come in around $221,760, roughly 75% below the house median. The 12-month picture shows a softening market (-16.6%), giving buyers more room to negotiate.
For buyers
A 20% deposit on the median house works out to roughly $176,000. Prices sit above the South Australia median, so plan for a stretched deposit and shop carefully on borrowing capacity.
For sellers
With 12-month growth at -16.6%, pricing should anchor to the most recent six months of comparables, not last year's peak.
Market
The price of a home here.
Median house price
$879,800
-16.6% over the past year. Median unit price $221,760.
Sales data as of July 2026· sales-sa
Rental and ownership
Weekly rent (house)
$400/wk
Weekly rent (unit)
$255/wk
Owner occupied
83%
Renter occupied
15%
At a deeper level
$879,800
-16.6% annual growth
$221,760
764
Median age: 49
Rental data as of March 2026· rental-sa
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For investors
Investment overview.
Gross rental yield on houses sits at 2.36% (median rent $400/wk against a $879,800 price tag). Units yield 5.98% gross, often the better cash-flow play for first-time investors. Renter share is modest (15%), so the rental pool is smaller and tenant demand can be patchier than in higher-density suburbs.
Gross Yield (House)
Source: data.sa.gov.au · July 20262.36%
Based on $879,800 median
Gross Yield (Unit)
Source: data.sa.gov.au · July 20265.98%
Based on $221,760 median
Annual Growth (House)
Source: data.sa.gov.au · July 2026-16.6%
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 202683%
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 -16.6%/yr
2021
$2.2M
5-year change
-60%
2026
$880K
Trajectory derived from the current median compounded at the suburb’s annual growth rate, not raw sale-by-sale history.
Safety
Crime and safety.
68
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.
18
0
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in Aldinga.
Local schools for Aldinga
View the catchment for each school to find out more.
Government School Catchment
Aldinga Payinthi College
Aldinga Beach Primary School
Willunga 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 Aldinga.
- What is the median house price in Aldinga?
- The median house price in Aldinga, SA 5173 is $879,800. The median unit price is $221,760. Annual growth is -16.6%.
- What is the Aldinga postcode?
- Aldinga is in the 5173 postcode, in SA, in the City of Onkaparinga region.
- Where is Aldinga?
- Aldinga is a suburb of Adelaide, in SA 5173. It is part of the Greater Adelaide area, in the City of Onkaparinga region.
- What is the average rent in Aldinga?
- The median weekly rent for houses is $400, for units it's $255.
- What schools are in Aldinga?
- There are 12 schools serving Aldinga on this page, including Aldinga Payinthi College, Aldinga Beach Primary School, Willunga Waldorf School.
- How walkable is Aldinga?
- Aldinga has a Walk Score of 18 out of 100, highly car-dependent. transit score 0, bike score 100.
- What suburbs are near Aldinga?
- Aldinga is close to Port Willunga, Aldinga Beach, Whites Valley, Maslin Beach, Tatachilla.
- What is the population of Aldinga?
- The population of Aldinga is approximately 764 (2021 Census). The median age is 49.
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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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