Willunga Postcode
South Australia
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Willunga Compares
Willunga vs the SA average and the national average (2021 Census, population-weighted).
| Metric | Willunga | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $1,681 ≈SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $330 ≈SA | $308 | $390 | $329 |
| Mortgage/month | $1,683 ≈SA | $1,558 | $1,958 | $1,666 |
| Median age | 47 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 8/10 +SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 4.2% -SA | 6.0% | 5.0% | 6.0% |
Green pill = at least 10% above the SA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Willunga is a locality 39 km from Adelaide in South Australia, classified as inner regional by the ABS. The postcode is 5172. It falls within the South Australia - South East region. The local government area is Onkaparinga.
According to the 2021 Census, Willunga has a population of 2,445 with a median age of 47. The median weekly household income is $1,681, close to the SA average. The unemployment rate is 4.2%, lower than the SA average. The Indigenous population is 27 (1.1% of residents).
Housing in Willunga includes a median weekly rent of $330, median monthly mortgage repayment of $1,683, with 918 total dwellings. Owner-occupied dwellings (owned or mortgaged) make up 84.8% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Willunga scores in decile 8 out of 10, which is above the national average.
Schools in Willunga include Willunga High School, Willunga Waldorf School and Willunga Primary School.
Willunga is part of the Fleurieu - Kangaroo Island statistical area in South Australia.
Willunga Details
| Postcode | 5172 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 2,445 |
| Median Age | 47 years |
| Median Household Income (Census 2021) | $1,681/week |
| Median Personal Income (Census 2021) | $780/week |
| Median Weekly Rent (Census 2021) | $330 |
| Median Monthly Mortgage (Census 2021) | $1,683 |
| Average Household Size | 2.5 persons |
| Area | 21.3 km² |
| Population Density | 115/km² |
| Total Dwellings | 918 |
| Australian Citizens | 92.6% |
| Indigenous Population | 27 (1.1%) |
| Unemployment Rate | 4.2% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -35.2743124 |
| Longitude | 138.5559895 |
| Distance from Adelaide | 39 km |
| Region (SA4) | South Australia - South East |
| Area (SA3) | Fleurieu - Kangaroo Island |
| Local Government | Onkaparinga |
| Federal Electorate | Mayo |
Age Profile
Show counts
| 0–14 years | 439 (18.0%) |
| 15–24 years | 242 (9.9%) |
| 25–44 years | 457 (18.7%) |
| 45–64 years | 738 (30.2%) |
| 65+ years | 569 (23.3%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 8 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 270 (11.0%) |
| Asthma | 213 (8.7%) |
| Heart Disease | 116 (4.7%) |
| Cancer | 85 (3.5%) |
| Diabetes | 83 (3.4%) |
| Lung Condition | 38 (1.6%) |
| Dementia | 10 (0.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 25 (2.8%) |
| 1 vehicle | 257 (28.4%) |
| 2 vehicles | 390 (43.1%) |
| 3+ vehicles | 232 (25.7%) |
Schools in Willunga
Suburbs Near Willunga
Same Postcode (5172)
More Willunga Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.