South Australia · Postcode 5485
Wilmington postcode and suburb data
South Australia · Phone area code 08 · 261 km from Adelaide
Suburb snapshot
Wilmington 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.
Detailed comparison table
Wilmington vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Wilmington | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,260 -SA | $1,545 | $1,836 |
| Rent/wk | $200 -SA | $308 | $390 |
| Mortgage/month | $1,083 -SA | $1,558 | $1,958 |
| Median age | 51 | 45.0 | 45.0 |
| SEIFA decile | 3/10 -SA | 5.0/10 | 6.0/10 |
| Unemployment | 4.2% -SA | 6.0% | 5.0% |
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.
Wilmington is a locality 261 km from Adelaide in South Australia, classified as outer regional by the ABS. The postcode is 5485. It falls within the South Australia - Outback region. The local government area is Mount Remarkable.
According to the 2021 Census, Wilmington has a population of 667 with a median age of 51. The median weekly household income is $1,260, below the SA average. The unemployment rate is 4.2%, lower than the SA average. The Indigenous population is 25 (3.7% of residents).
Housing in Wilmington includes a median weekly rent of $200, median monthly mortgage repayment of $1,083, with 240 total dwellings. Housing costs in the area sit below the SA average. Owner-occupied dwellings (owned or mortgaged) make up 87.2% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Wilmington scores in decile 3 out of 10, which is below the national average.
Wilmington is served by Wilmington Primary School.
Wilmington is part of the Outback - North and East statistical area in South Australia.
Wilmington details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5485 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 667 |
| Median Age | 51 years |
| Median Household Income (Census 2021) | $1,260/week |
| Median Personal Income (Census 2021) | $630/week |
| Median Weekly Rent (Census 2021) | $200 |
| Median Monthly Mortgage (Census 2021) | $1,083 |
| Average Household Size | 2.4 persons |
| Area | 601.7 km² |
| Population Density | 1/km² |
| Total Dwellings | 240 |
| Australian Citizens | 84.1% |
| Indigenous Population | 25 (3.7%) |
| Unemployment Rate | 4.2% |
| SEIFA IRSAD Decile | 3/10 (below average) |
| Latitude | -32.6132039 |
| Longitude | 138.1200592 |
| Distance from Adelaide | 261 km |
| Region (SA4) | South Australia - Outback |
| Area (SA3) | Outback - North and East |
| Local Government | Mount Remarkable |
| Federal Electorate | Grey |
| State Electorate | Stuart |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 114 (17.1%) |
| 15–24 years | 63 (9.4%) |
| 25–44 years | 118 (17.7%) |
| 45–64 years | 205 (30.7%) |
| 65+ years | 166 (24.9%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 68 (10.2%) |
| Arthritis | 49 (7.3%) |
| Heart Disease | 34 (5.1%) |
| Diabetes | 33 (4.9%) |
| Cancer | 23 (3.4%) |
| Lung Condition | 20 (3.0%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 3 (1.3%) |
| 1 vehicle | 71 (30.6%) |
| 2 vehicles | 88 (37.9%) |
| 3+ vehicles | 70 (30.2%) |
Schools in Wilmington
ACARA 2025 school profiles for schools located in Wilmington. ICSEA is shown where ACARA publishes it.
Suburbs Near Wilmington
More Wilmington 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.