IRSAD
Relative Socio-economic Advantage and Disadvantage
Score 932
Measures relative socio-economic advantage and disadvantage.
Within AustraliaDecile 3 of 10
Within South AustraliaDecile 3 of 10
For state-level context, explore the South Australia economy.
Housing
Port Willunga
South Australia · Census 2021
$1.02M+22.4% yrmedian house · June 2026
Port Willunga is a coastal suburb of Onkaparinga.
Median house price
$1.02M44th pctile
of 426 priced SA suburbs
Household income
$1,313/wk38th pctile
of 1,632 SA suburbs
Amenity score
3/10016th pctile
of 711 rated SA suburbs
Median house price
Rolling median of settled transfers, state Valuer-General open data (CC BY 4.0). Median of South Australia suburb medians: $1.1M.
How it compares
Median house price44th percentile
<$358k426 priced suburbs$2.9M+
Household income / wk38th percentile
<$450ABS Census 2021$3,749+
Median house price+5% vs Greater Adelaide · +72% vs Rest of SA
AdelaideRest of state
Greater Adelaide $980k · Rest of SA $595kPort Willunga $1.02M
Percentiles rank this suburb against South Australia suburbs that carry the metric — never across states, and never against suburbs where it is missing. Price references are ABS median established-house transfer prices for the Mar 2026 quarter (CC BY 4.0); the suburb figure is a Valuer-General median over a different window, so read the gap as indicative. Income references are the Census 2021 median of the middle suburb in South Australia and nationally, not a household-weighted median.
People & housing
Population
1,785
Median age
44 yrs
Income / person / wk
$690
Household income / wk
$1,313
▼ 9% vs SA
Median rent / wk
$328
Mortgage / month
$1,300
Who lives here
- Couples with children
- 25%
- −3 pts vs SA
- Living alone
- 30%
- +1 pts vs SA
- Unemployment
- 6%
- +1 pts vs SA
- In the labour force
- 57%
- −3 pts vs SA
- Bachelor degree or higher
- 20%
- −3 pts vs SA
- Earning $1–$499 a week
- 29%
- +2 pts vs SA
- Earning $2,000+ a week
- 7%
- −3 pts vs SA
Households for the family mix, residents aged 15+ for work, education and income; unemployment is a share of the labour force. SA figures weight each suburb by its dwellings or residents. ABS Census 2021 (CC BY 4.0). Withheld for very small populations — under 100 residents, or under 50 dwellings, households or workers for the shares that count those.
Housing stock
712 occupied private dwellings
- Separate house 95%
- Flat or apartment 1%
- Semi, terrace & other 4%
SA: 78% separate houses · 7% flats & apartments
- Owned outright 38%
- Mortgaged 37%
- Rented 23%
- Other & not stated 2%
SA: 32% owned outright · 36% mortgaged · 28% rented
ABS Census 2021 (CC BY 4.0). Withheld for very small populations — under 100 residents, or under 50 dwellings, households or workers for the shares that count those.
Socio-economic profile
IRSD
Relative Socio-economic Disadvantage
Score 963
Measures relative socio-economic disadvantage only; a higher score means less disadvantage.
Within AustraliaDecile 3 of 10
Within South AustraliaDecile 3 of 10
IER
Economic Resources
Score 971
Measures access to economic resources, including income, housing costs and assets.
Within AustraliaDecile 3 of 10
Within South AustraliaDecile 3 of 10
IEO
Education and Occupation
Score 955
Measures relative education and occupation characteristics.
Within AustraliaDecile 4 of 10
Within South AustraliaDecile 4 of 10
Scores are standardised across Australia to a mean of 1,000 and a standard deviation of 100. Deciles run from 1 (most disadvantaged) to 10 (least disadvantaged).
Source: ABS SEIFA 2021 (CC BY 4.0).
Terrain & hazard exposure
Median elevation
29 m
range 0–43 m
Land below 5 m
3.3%
3.2% below 2 m
Shares are the proportion of the suburb's land area; where part of a suburb is unmapped, only its mapped land counts, so the share is a floor. Land where Landsat saw water in at least 1% of clear passes since 1987, excluding permanent water and filtered by DEA's confidence layer. Satellites miss flood peaks, so this is a floor, not a risk estimate; dense high-rise cores can still register tower shadow as water. Not yet assessed: the Code applies its precautionary Evidence Required overlay to most of this suburb. Designated for development control; a designation, not a prediction of fire behaviour. Covers the Code's High, Medium, General and Urban Interface bushfire overlays. Land under its precautionary Regional and Outback overlays has not been assessed and is shown as no statutory layer. Elevation is orthometric height from a 30 m model; no hydrology or drainage is modelled.
Planning & zoning
Zoning mix (share of the suburb's land)
Show on map →- General / medium / high-density residential39%
- Open space & recreation37%
- Low-density residential11%
- Conservation11%
- Rural1.4%
- Infrastructure & special purpose0.6%
- Waterways0.4%
- Growth area, deferred or unzoned0.3%
In a heritage area
14%
conservation area / Heritage Overlay
Show on map →Listed heritage places
14
local & State places in the Code
Planning instrument: Planning and Design Code. Zones are grouped into ten families so states compare; the council's own scheme is the authority for any one lot. Listed-place counts follow each state's own list, so they do not compare across states. Source: SA Planning and Design Code zones; SA Code heritage & character overlays.
Local amenities
Schools
0
Supermarkets
0
Pubs & bars
0
Parks
2
Libraries
0
GP clinics
0
Pharmacies
0
Hospitals
0
Nearest supermarket
2.0 km
Nearest train
8.0 km
Nearest hospital
13.8 km
Distance to coast
0.4 km
NBN
FIXED LINE
Amenity counts via © OpenStreetMap contributors (ODbL) & Geoscience Australia HealthDirect (CC BY 4.0). Distance to coast derived from ABS state boundaries (CC BY 4.0).
Culture & community
- Dominant religion
- No religion · 63%
- Top language at home
- German · 0%
- No religion
- 63%
- Born overseas
- 16%
- English only at home
- 97%
Schools by sector
- Government / Catholic / Indep.
- 1 / 0 / 0
- Primary / Secondary
- 1 / 1
- Nearest secondary
- 1.1 km
School sector & type: ACARA (Australian Curriculum, Assessment and Reporting Authority), School Location dataset.
Local council
- Council (LGA)
- Onkaparinga
- Population
- 184,827 (2025) · +0.9% in a year
- Area / density
- 518 km² · 357/km²
- Council medians (2021)
- age 41 · $1,410/wk household income · $312/wk rent
- Council-wide house median (2023-24)
- $682k
- Federal grants
- $9.89M in 2025-26 · $54/resident
- Website
- onkaparingacity.com/Home
Council boundaries and the suburb split: ABS ASGS LGA 2024, allocated by 2021 mesh block and weighted by Census 2021 residents. Population: ABS Estimated Resident Population 2025. Medians: ABS Census 2021. House median: ABS Data by Region, established-house transfers across the whole council, financial year 2023-24. Federal grants: Financial Assistance Grants, Dept of Infrastructure. ABS and Dept of Infrastructure data CC BY 4.0; council website from Wikidata (CC0).
Representation
- Federal division
- Mayo
- Federal MP
- Rebekha Sharkie (XEN)
- Two-party-preferred
- Labor 55% 2PP
- State electorate
- Mawson
- State MP
- Leon Bignell (ALP)
Comparable suburbs
Closest by median house price across SA.
Similar suburbs
Closest demographic & amenity profile, nationally.
Sources: ABS ASGS boundaries (CC BY 4.0); ABS Census 2021 (CC BY 4.0); South Australia Valuer-General settled transfers (CC BY 4.0); ACARA School Locations (CC BY 4.0); Australian Electoral Commission (CC BY 4.0); Geoscience Australia 1 Second DEM-S (CC BY 4.0); DEA Water Observations Statistics, Geoscience Australia (CC BY 4.0); Planning and Design Code overlays (Hazards — Flooding, and Flooding — General), Government of South Australia (CC BY 3.0 AU); Planning and Design Code overlays (Hazards — Bushfire), Government of South Australia (CC BY 3.0 AU); Planning and Design Code Zones, Government of South Australia (PlanSA) (CC BY 3.0 AU); Planning and Design Code Overlays (heritage and character), Government of South Australia (PlanSA) (CC BY 3.0 AU); Wikipedia state-member tables (CC BY-SA 4.0). Not financial advice.