- Home
- South Australia
- Barossa - Yorke - Mid North
- Yorke Peninsula
- Sheaoak Flat
South Australia · Postcode 5581
Sheaoak Flat postcode and suburb data
South Australia · Phone area code 08 · 72 km from Adelaide
Suburb snapshot
Sheaoak Flat 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 Sheaoak Flat ranks: household income sits in the bottom 25% of SA suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Sheaoak Flat vs the SA average and the national average, using population-weighted 2021 Census data.
| 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
Location, Census, housing, SEIFA and geography fields used across this profile.
| 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 |
| State Electorate | Narungga |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
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
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.