- Home
- South Australia
- Roxby Downs
Roxby Downs
South Australia · South Australia - Outback · 3,979 people · 2 suburbs · 1 postcodes
Roxby Downs at a glance
Map shows the Roxby Downs LGA boundary in blue with a marker per suburb. Hover for suburb name, click for details.
Marker colour reflects SEIFA IRSAD decile: ● 1-2 (most disadvantaged), ● 3-4, ● 5-6, ● 7-8, ● 9-10 (most advantaged).
Boundary source: ABS ASGS 2021. Map tiles: OpenStreetMap contributors.
Roxby Downs is a Local Government Area in South Australia, in the Adelaide region. It covers 2 suburbs across 1 postcodes and an area of 288 km². Roxby Downs has a population of 3,979 , ranking #50 most populous in SA. The most populous suburb is Roxby Downs (3,671 residents), and the highest median household income is in Roxby Downs at $3,142/week. The LGA-wide median household income is $3,025/week and median age is 30.5. About 13.5% of residents were born overseas and 8.7% speak a language other than English at home.
Who lives here
Age structure
Show counts
| 0–14 years | 1,020 (25.6%) |
| 15–24 years | 437 (11.0%) |
| 25–44 years | 1,605 (40.2%) |
| 45–64 years | 852 (21.4%) |
| 65+ years | 75 (1.9%) |
How they live
Housing tenure
Dwelling type mix
Work and learning
Schools in Roxby Downs
2 schools across Roxby Downs: 50.0% Government, 50.0% Catholic, 0% Independent. The SA average is 70.8% / 14.3% / 14.9%. Schools here have a median ICSEA of 948 (range 922 to 975). SA median is 999; national mean is 1000.
Sector mix
Type breakdown
ICSEA range
ICSEA (Index of Community Socio-Educational Advantage) summarises the socio-economic background of each school's families. Higher values indicate more advantage. Source: ACARA 2025.
All 2 schools in Roxby Downs, sorted by enrolment:
| School | Sector | Type | Suburb | Students | ICSEA |
|---|---|---|---|---|---|
| Roxby Downs Area School | Government | Combined | Roxby Downs | 491 | 922 |
| St Barbara's Parish School | Catholic | Combined | Roxby Downs | 201 | 975 |
Source: ACARA School Profiles 2025. ICSEA shown where reported; some schools (notably small primaries) do not publish ICSEA.
SEIFA socio-economic indexes
SEIFA 2021 ranks Australian areas across four dimensions. Scores are population-weighted averages of suburb-level SEIFA scores within Roxby Downs. Higher scores indicate more advantage; the national mean is 1000.
IRSAD
Relative socio-economic advantage and disadvantage
IRSD
Relative disadvantage only (lower = more disadvantaged)
IER
Economic resources: income, wealth, housing
IEO
Education and occupation: qualifications, skill levels
Suburbs in Roxby Downs
Roxby Downs contains 2 suburbs and 1 postcodes. Sorted by population.
| Suburb | Postcode | Population | Median income | Median age |
|---|---|---|---|---|
| Roxby Downs | 5725 | 3,671 | $3,142/wk | 30 |
| Olympic Dam | 5725 | 308 | $1,625/wk | 36 |
Postcodes covered
Compare Roxby Downs with neighbouring LGAs
Side-by-side demographic and socio-economic snapshot of Roxby Downs and its closest neighbouring LGAs.
| LGA | Population | Median age | Median HH income | SEIFA IRSAD | % renting | % overseas-born |
|---|---|---|---|---|---|---|
| Roxby Downs (SA) | 3,979 | 30.5 | $3,025/wk | 1004 | 70.4% | 13.5% |
| Unincorporated SA | 2,874 | 42.1 | $1,304/wk | 902 | 45.9% | 8.7% |
Services and amenities
Frequently asked questions about Roxby Downs
What is the population of Roxby Downs?
The 2021 Census recorded 3,979 people living in Roxby Downs, across 2 suburbs.
What suburbs are in Roxby Downs?
Roxby Downs contains 2 suburbs. The most populous are Roxby Downs, Olympic Dam.See the full list in the Suburbs section above.
What postcodes are in Roxby Downs?
Roxby Downs covers 1 postcodes: 5725.
What is the median household income in Roxby Downs?
The population-weighted median household income across Roxby Downs is $3,025 per week (2021 Census), ranking #1 of 72 SA LGAs.
How many schools are in Roxby Downs?
Roxby Downs has 2 schools, including 1 government, 1 Catholic, and 0 independent schools (ACARA 2025).
What is the SEIFA score for Roxby Downs?
Roxby Downs has a population-weighted SEIFA IRSAD score of 1004, where the national average is 1000. Higher scores indicate more relative advantage.
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 (IRSD, IRSAD, IER, IEO), ACARA School Profiles 2025, ABS ASGS 2021 LGA boundaries. How this data is sourced.