Crooked Brook Postcode

Western Australia

Inner Regional Top 10% SEIFA Above WA income
6236
Postcode for Crooked Brook, WA
Phone area code: 08 · 172 km from Perth · Pop. 272
272
Population
48
Median Age
$2,208
Household Income/wk
$280
Median Rent/wk
9/10
SEIFA Advantage
105.7
Area (km²)

Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.

Where Crooked Brook ranks: household income is in the top 25% of WA suburbs; SEIFA decile 9 puts it in the top 20% of Australia for socio-economic advantage.

How Crooked Brook Compares

Crooked Brook vs the WA average and the national average (2021 Census, population-weighted).

MetricCrooked BrookWA avgAU avg
Household income/wk $2,208 +WA $1,891 $1,836
Rent/wk $280 -WA $355 $390
Mortgage/month $2,184 +WA $1,890 $1,958
Median age 48 43.0 45.0
SEIFA decile 9/10 +WA 6.0/10 6.0/10
Unemployment 3.4% -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.

Crooked Brook is a locality 172 km from Perth in Western Australia, classified as inner regional by the ABS. The postcode is 6236. It falls within the Bunbury region. The local government area is Dardanup.

According to the 2021 Census, Crooked Brook has a population of 272 with a median age of 48. The median weekly household income is $2,208, above the WA average. The unemployment rate is 3.4%, lower than the WA average.

Housing in Crooked Brook includes a median weekly rent of $280, median monthly mortgage repayment of $2,184, with 89 total dwellings. These housing costs sit above the WA average. Owner-occupied dwellings (owned or mortgaged) make up 96.2% of housing.

On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Crooked Brook scores in decile 9 out of 10, which is well above the national average.

Crooked Brook is part of the Bunbury statistical area in Western Australia.

Crooked Brook Details

Postcode6236
StateWestern Australia (WA)
Phone Area Code08
Population (2021)272
Median Age48 years
Median Household Income (Census 2021)$2,208/week
Median Personal Income (Census 2021)$893/week
Median Weekly Rent (Census 2021)$280
Median Monthly Mortgage (Census 2021)$2,184
Average Household Size2.6 persons
Area105.7 km²
Population Density3/km²
Total Dwellings89
Australian Citizens86.0%
Unemployment Rate3.4%
SEIFA IRSAD Decile9/10 (well above average)
Latitude-33.497899
Longitude115.8183078
Distance from Perth172 km
Region (SA4)Bunbury
Area (SA3)Bunbury
Local GovernmentDardanup
Federal ElectorateForrest

Age Profile

0–14 (13.6%) 15–24 (11.0%) 25–44 (21.3%) 45–64 (30.9%) 65+ (23.2%)
Show counts
0–14 years37 (13.6%)
15–24 years30 (11.0%)
25–44 years58 (21.3%)
45–64 years84 (30.9%)
65+ years63 (23.2%)

Housing Tenure

Owned outright (45.0%) Mortgaged (51.2%) Rented (3.8%)

SEIFA Socio-economic Index

Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 9 of 10. Higher deciles indicate more advantage.

Health Conditions (2021 Census)

Arthritis20 (7.4%)
Asthma16 (5.9%)
Cancer9 (3.3%)
Diabetes6 (2.2%)
Heart Disease6 (2.2%)
Lung Condition3 (1.1%)

Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.

Motor Vehicles per Dwelling

No vehicle0 (0.0%)
1 vehicle10 (12.2%)
2 vehicles37 (45.1%)
3+ vehicles35 (42.7%)

Suburbs Near Crooked Brook

Same Postcode (6236)

More Crooked Brook 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.