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South Australia · Postcode 5431
Black Rock postcode and suburb data
South Australia · Phone area code 08 · 231 km from Adelaide
Suburb snapshot
Black Rock 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 Black Rock ranks: rents sit in the cheapest 10% in SA.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Black Rock vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Black Rock | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,437 ≈SA | $1,545 | $1,836 |
| Mortgage/month | $200 -SA | $1,558 | $1,958 |
| Median age | 62 | 45.0 | 45.0 |
| SEIFA decile | 8/10 +SA | 5.0/10 | 6.0/10 |
| Unemployment | 0.0% -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.
Black Rock is a remote community in South Australia, with postcode 5431. It lies roughly 231 km from Adelaide, classified by the ABS as remote Australia. The area is administered by Orroroo Carrieton.
According to the 2021 Census, Black Rock has a population of 36 with a median age of 62. The median weekly household income is $1,437, close to the SA average.
Housing in Black Rock includes a median monthly mortgage repayment of $200, 14 total dwellings. Housing costs in the area sit below the SA average. Owner-occupied dwellings (owned or mortgaged) make up 100.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Black Rock scores in decile 8 out of 10, which is above the national average.
Black Rock is part of the Mid North statistical area in South Australia.
Black Rock details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5431 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 36 |
| Median Age | 62 years |
| Median Household Income (Census 2021) | $1,437/week |
| Median Personal Income (Census 2021) | $1,020/week |
| Median Monthly Mortgage (Census 2021) | $200 |
| Average Household Size | 2.2 persons |
| Area | 160.2 km² |
| Population Density | 0/km² |
| Total Dwellings | 14 |
| Australian Citizens | 100.0% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -32.8522102 |
| Longitude | 138.6739566 |
| Distance from Adelaide | 231 km |
| Region (SA4) | Barossa - Yorke - Mid North |
| Area (SA3) | Mid North |
| Local Government | Orroroo Carrieton |
| Federal Electorate | Grey |
| State Electorate | Stuart |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 3 (8.3%) |
| 15–24 years | 0 (0.0%) |
| 25–44 years | 5 (13.9%) |
| 45–64 years | 8 (22.2%) |
| 65+ years | 10 (27.8%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 4 (11.1%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 0 (0.0%) |
| 2 vehicles | 6 (46.2%) |
| 3+ vehicles | 7 (53.8%) |
Suburbs Near Black Rock
Same Postcode (5431)
More Black Rock 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.