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Sheaoak Flat Postcode
South Australia
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Sheaoak Flat Compares
Sheaoak Flat vs the SA average and the national average (2021 Census, population-weighted).
| Metric | Sheaoak Flat | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,062 -SA | $1,545 | $1,836 |
| Mortgage/month | $2,000 +SA | $1,558 | $1,958 |
| Median age | 63 | 45.0 | 45.0 |
| SEIFA decile | 5/10 ≈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.
Sheaoak Flat is a locality 72 km from Adelaide in South Australia, classified as outer regional by the ABS. The postcode is 5581. It falls within the Barossa - Yorke - Mid North region. The local government area is Yorke Peninsula.
According to the 2021 Census, Sheaoak Flat has a population of 28 with a median age of 63. The median weekly household income is $1,062, below the SA average.
Housing in Sheaoak Flat includes a median monthly mortgage repayment of $2,000, 13 total dwellings. These housing costs sit above 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, Sheaoak Flat scores in decile 5 out of 10, which is around the national average.
Sheaoak Flat is part of the Yorke Peninsula statistical area in South Australia.
Sheaoak Flat Details
| Postcode | 5581 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 28 |
| Median Age | 63 years |
| Median Household Income (Census 2021) | $1,062/week |
| Median Personal Income (Census 2021) | $417/week |
| Median Monthly Mortgage (Census 2021) | $2,000 |
| Average Household Size | 1.8 persons |
| Area | 9.6 km² |
| Population Density | 3/km² |
| Total Dwellings | 13 |
| Australian Citizens | 103.6% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 5/10 (average) |
| Latitude | -34.6976797 |
| Longitude | 137.867433 |
| Distance from Adelaide | 72 km |
| Region (SA4) | Barossa - Yorke - Mid North |
| Area (SA3) | Yorke Peninsula |
| Local Government | Yorke Peninsula |
| Federal Electorate | Grey |
Age Profile
Show counts
| 0–14 years | 0 (0.0%) |
| 15–24 years | 5 (17.9%) |
| 25–44 years | 0 (0.0%) |
| 45–64 years | 14 (50.0%) |
| 65+ years | 15 (53.6%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 5 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 7 (25.0%) |
| Heart Disease | 4 (14.3%) |
| Asthma | 3 (10.7%) |
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 | 5 (45.5%) |
| 2 vehicles | 6 (54.5%) |
| 3+ vehicles | 0 (0.0%) |
Suburbs Near Sheaoak Flat
Same Postcode (5581)
More Sheaoak Flat 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.