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South Australia · Postcode 5723
William Creek postcode and suburb data
South Australia · Phone area code 08 · 703 km from Adelaide
Suburb snapshot
William Creek 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 William Creek ranks: household income is in the top 10% of SA suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
William Creek vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | William Creek | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $3,750 +SA | $1,545 | $1,836 |
| Median age | 30 | 45.0 | 45.0 |
| SEIFA decile | 3/10 -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.
William Creek is a very remote community in South Australia, with postcode 5723. It lies roughly 703 km from Adelaide, classified by the ABS as very remote Australia. The area is administered by Unincorporated SA.
According to the 2021 Census, William Creek has a population of 17 with a median age of 30. The median weekly household income is $3,750, above the SA average.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, William Creek scores in decile 3 out of 10, which is below the national average.
William Creek is part of the Outback - North and East statistical area in South Australia.
William Creek details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5723 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 17 |
| Median Age | 30 years |
| Median Household Income (Census 2021) | $3,750/week |
| Median Personal Income (Census 2021) | $1,125/week |
| Average Household Size | 4 persons |
| Area | 14880.4 km² |
| Population Density | 0/km² |
| Australian Citizens | 88.2% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 3/10 (below average) |
| Latitude | -28.9078 |
| Longitude | 136.342 |
| Distance from Adelaide | 703 km |
| Region (SA4) | South Australia - Outback |
| Area (SA3) | Outback - North and East |
| Local Government | Unincorporated SA |
| Federal Electorate | Grey |
| State Electorate | Stuart |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 4 (23.5%) |
| 15–24 years | 3 (17.6%) |
| 25–44 years | 4 (23.5%) |
| 45–64 years | 0 (0.0%) |
| 65+ years | 0 (0.0%) |
SEIFA socio-economic index
Suburbs Near William Creek
Same Postcode (5723)
More William Creek 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.