Onslow Postcode
Western Australia
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Onslow Compares
Onslow vs the WA average and the national average (2021 Census, population-weighted).
| Metric | Onslow | WA avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,596 +WA | $1,891 | $1,836 |
| Rent/wk | $240 -WA | $355 | $390 |
| Mortgage/month | $1,825 ≈WA | $1,890 | $1,958 |
| Median age | 35 | 43.0 | 45.0 |
| SEIFA decile | 7/10 ≈WA | 6.0/10 | 6.0/10 |
| Unemployment | 3.3% -WA | 5.0% | 5.0% |
Green pill = at least 10% above the WA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Onslow is a very remote community in Western Australia, with postcode 6710. It lies roughly 1146 km from Perth, classified by the ABS as very remote Australia. The area is administered by Ashburton.
According to the 2021 Census, Onslow has a population of 829 with a median age of 35. The median weekly household income is $2,596, above the WA average. The unemployment rate is 3.3%, lower than the WA average. The Indigenous population is 121 (14.6% of residents).
Housing in Onslow includes a median weekly rent of $240, median monthly mortgage repayment of $1,825, with 253 total dwellings. Housing costs in the area sit below the WA average. Rental properties account for 72.0% of dwellings.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Onslow scores in decile 7 out of 10, which is above the national average.
Onslow is served by Onslow School.
Onslow is part of the West Pilbara statistical area in Western Australia.
Onslow Details
| Postcode | 6710 |
| State | Western Australia (WA) |
| Phone Area Code | 08 |
| Population (2021) | 829 |
| Median Age | 35 years |
| Median Household Income (Census 2021) | $2,596/week |
| Median Personal Income (Census 2021) | $1,386/week |
| Median Weekly Rent (Census 2021) | $240 |
| Median Monthly Mortgage (Census 2021) | $1,825 |
| Average Household Size | 2.5 persons |
| Area | 189.1 km² |
| Population Density | 4/km² |
| Total Dwellings | 253 |
| Australian Citizens | 72.4% |
| Indigenous Population | 121 (14.6%) |
| Unemployment Rate | 3.3% |
| SEIFA IRSAD Decile | 7/10 (above average) |
| Latitude | -21.662723 |
| Longitude | 115.1069826 |
| Distance from Perth | 1146 km |
| Region (SA4) | Western Australia - Outback (North) |
| Area (SA3) | West Pilbara |
| Local Government | Ashburton |
| Federal Electorate | Durack |
Age Profile
Show counts
| 0–14 years | 205 (24.7%) |
| 15–24 years | 41 (4.9%) |
| 25–44 years | 314 (37.9%) |
| 45–64 years | 204 (24.6%) |
| 65+ years | 76 (9.2%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 7 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Asthma | 44 (5.3%) |
| Arthritis | 42 (5.1%) |
| Diabetes | 36 (4.3%) |
| Heart Disease | 26 (3.1%) |
| Cancer | 19 (2.3%) |
| Lung Condition | 13 (1.6%) |
| 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 | 14 (5.7%) |
| 1 vehicle | 78 (31.6%) |
| 2 vehicles | 100 (40.5%) |
| 3+ vehicles | 55 (22.3%) |
Schools in Onslow
Suburbs Near Onslow
Same Postcode (6710)
More Onslow 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.