Western Australia · Postcode 6355
Holt Rock postcode and suburb data
Western Australia · Phone area code 08 · 343 km from Perth
Suburb snapshot
Holt Rock at a glance vs WA
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against WA
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Holt Rock ranks: household income is in the top 10% of WA suburbs; rents sit in the cheapest 10% in WA; SEIFA decile 10 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Holt Rock vs the WA average and the national average, using population-weighted 2021 Census data.
| Metric | Holt Rock | WA avg | AU avg |
|---|---|---|---|
| Household income/wk | $3,249 +WA | $1,891 | $1,836 |
| Median age | 38 | 43.0 | 45.0 |
| SEIFA decile | 10/10 +WA | 6.0/10 | 6.0/10 |
| Unemployment | 0.0% -WA | 5.0% | 5.0% |
Green pill = at least 10% above the WA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Holt Rock is a very remote community in Western Australia, with postcode 6355. It lies roughly 343 km from Perth, classified by the ABS as very remote Australia. The area is administered by Kulin.
According to the 2021 Census, Holt Rock has a population of 46 with a median age of 38. The median weekly household income is $3,249, above the WA average.
Housing in Holt Rock includes a 15 total dwellings. Housing costs in the area sit below the WA average. Owner-occupied dwellings (owned or mortgaged) make up 100.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Holt Rock scores in decile 10 out of 10, which is well above the national average.
Holt Rock is part of the Wheat Belt - South statistical area in Western Australia.
Holt Rock details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 6355 |
| State | Western Australia (WA) |
| Phone Area Code | 08 |
| Population (2021) | 46 |
| Median Age | 38 years |
| Median Household Income (Census 2021) | $3,249/week |
| Median Personal Income (Census 2021) | $1,562/week |
| Average Household Size | 2.6 persons |
| Area | 778.9 km² |
| Population Density | 0/km² |
| Total Dwellings | 15 |
| Australian Citizens | 78.3% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -32.6776612 |
| Longitude | 119.4116555 |
| Distance from Perth | 343 km |
| Region (SA4) | Western Australia - Wheat Belt |
| Area (SA3) | Wheat Belt - South |
| Local Government | Kulin |
| Federal Electorate | O'Connor |
| State Electorate | Roe (Agricultural) |
| Time Zone | AWST (UTC+8), Australia/Perth (standard time) |
Age Profile
Show counts
| 0–14 years | 10 (21.7%) |
| 15–24 years | 0 (0.0%) |
| 25–44 years | 17 (37.0%) |
| 45–64 years | 15 (32.6%) |
| 65+ years | 0 (0.0%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 4 (8.7%) |
| Arthritis | 3 (6.5%) |
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 | 4 (28.6%) |
| 2 vehicles | 5 (35.7%) |
| 3+ vehicles | 5 (35.7%) |
Suburbs Near Holt Rock
Same Postcode (6355)
More Holt 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.