South Australia · Postcode 5173
Aldinga postcode and suburb data
South Australia · Phone area code 08 · 39 km from Adelaide
Suburb snapshot
Aldinga at a glance vs SA
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against SA
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Aldinga ranks: household income sits in the bottom 25% of SA suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Aldinga vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Aldinga | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $1,102 -SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $255 -SA | $308 | $390 | $329 |
| Mortgage/month | $1,517 ≈SA | $1,558 | $1,958 | $1,666 |
| Median age | 49 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 5/10 ≈SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 2.7% -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.
Postcode 5173 covers Aldinga, an inland suburb of Adelaide about 39 km from the city centre. It forms part of the Adelaide - South region of South Australia. Local government services are provided by Onkaparinga.
According to the 2021 Census, Aldinga has a population of 764 with a median age of 49. The median weekly household income is $1,102, below the SA average. The unemployment rate is 2.7%, lower than the SA average. The Indigenous population is 3 (0.4% of residents).
Housing in Aldinga includes a median weekly rent of $255, median monthly mortgage repayment of $1,517, with 313 total dwellings. Housing costs in the area sit below the SA average. Owner-occupied dwellings (owned or mortgaged) make up 84.5% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Aldinga scores in decile 5 out of 10, which is around the national average.
Schools in Aldinga include Aldinga Payinthi College and Aldinga Beach Primary School.
Aldinga is part of the Onkaparinga statistical area in South Australia.
Aldinga details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5173 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 764 |
| Median Age | 49 years |
| Median Household Income (Census 2021) | $1,102/week |
| Median Personal Income (Census 2021) | $627/week |
| Median Weekly Rent (Census 2021) | $255 |
| Median Monthly Mortgage (Census 2021) | $1,517 |
| Average Household Size | 2.1 persons |
| Area | 13.3 km² |
| Population Density | 57/km² |
| Total Dwellings | 313 |
| Australian Citizens | 84.9% |
| Indigenous Population | 3 (0.4%) |
| Unemployment Rate | 2.7% |
| SEIFA IRSAD Decile | 5/10 (average) |
| Latitude | -35.267 |
| Longitude | 138.483 |
| Distance from Adelaide | 39 km |
| Region (SA4) | Adelaide - South |
| Area (SA3) | Onkaparinga |
| Local Government | Onkaparinga |
| Federal Electorate | Mayo |
| State Electorate | Mawson |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 133 (17.4%) |
| 15–24 years | 59 (7.7%) |
| 25–44 years | 139 (18.2%) |
| 45–64 years | 243 (31.8%) |
| 65+ years | 190 (24.9%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 82 (10.7%) |
| Asthma | 55 (7.2%) |
| Diabetes | 38 (5.0%) |
| Heart Disease | 35 (4.6%) |
| Lung Condition | 32 (4.2%) |
| Cancer | 21 (2.7%) |
| Dementia | 3 (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 | 13 (4.1%) |
| 1 vehicle | 139 (44.3%) |
| 2 vehicles | 115 (36.6%) |
| 3+ vehicles | 47 (15.0%) |
Schools in Aldinga
ACARA 2025 school profiles for schools located in Aldinga. ICSEA is shown where ACARA publishes it.
Suburbs Near Aldinga
Same Postcode (5173)
More Aldinga 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.