South Australia · Postcode 5413
Tarnma postcode and suburb data
South Australia · Phone area code 08 · 91 km from Adelaide
Suburb snapshot
Tarnma 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 Tarnma ranks: household income sits in the bottom 25% of SA suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Tarnma vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Tarnma | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $850 -SA | $1,545 | $1,836 |
| Rent/wk | $206 -SA | $308 | $390 |
| Median age | 74 | 45.0 | 45.0 |
| SEIFA decile | 6/10 ≈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.
Tarnma is a locality 91 km from Adelaide in South Australia, classified as outer regional by the ABS. The postcode is 5413. It falls within the Barossa - Yorke - Mid North region. The local government area is Clare and Gilbert Valleys.
According to the 2021 Census, Tarnma has a population of 20 with a median age of 74. The median weekly household income is $850, below the SA average.
Housing in Tarnma includes a median weekly rent of $206, 12 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, Tarnma scores in decile 6 out of 10, which is around the national average.
Tarnma is part of the Lower North statistical area in South Australia.
Tarnma details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5413 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 20 |
| Median Age | 74 years |
| Median Household Income (Census 2021) | $850/week |
| Median Personal Income (Census 2021) | $525/week |
| Median Weekly Rent (Census 2021) | $206 |
| Average Household Size | 1.6 persons |
| Area | 35.8 km² |
| Population Density | 1/km² |
| Total Dwellings | 12 |
| Australian Citizens | 75.0% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 6/10 (average) |
| Latitude | -34.1642578 |
| Longitude | 138.9422709 |
| Distance from Adelaide | 91 km |
| Region (SA4) | Barossa - Yorke - Mid North |
| Area (SA3) | Lower North |
| Local Government | Clare and Gilbert Valleys |
| Federal Electorate | Grey |
| State Electorate | Frome |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 0 (0.0%) |
| 15–24 years | 0 (0.0%) |
| 25–44 years | 0 (0.0%) |
| 45–64 years | 3 (15.0%) |
| 65+ years | 12 (60.0%) |
Housing Tenure
SEIFA socio-economic index
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 6 (66.7%) |
| 2 vehicles | 3 (33.3%) |
| 3+ vehicles | 0 (0.0%) |
Suburbs Near Tarnma
Same Postcode (5413)
More Tarnma 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.