Western Australia · Postcode 6355
Lake Biddy postcode and suburb data
Western Australia · Phone area code 08 · 310 km from Perth
Suburb snapshot
Lake Biddy 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 Lake Biddy ranks: household income sits in the bottom 25% of WA suburbs; SEIFA decile 10 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Lake Biddy vs the WA average and the national average, using population-weighted 2021 Census data.
| Metric | Lake Biddy | WA avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,125 -WA | $1,891 | $1,836 |
| Rent/wk | $200 -WA | $355 | $390 |
| Mortgage/month | $109 -WA | $1,890 | $1,958 |
| Median age | 44 | 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.
Lake Biddy is a very remote community in Western Australia, with postcode 6355. It lies roughly 310 km from Perth, classified by the ABS as very remote Australia. The area is administered by Lake Grace.
According to the 2021 Census, Lake Biddy has a population of 59 with a median age of 44. The median weekly household income is $1,125, below the WA average.
Housing in Lake Biddy includes a median weekly rent of $200, median monthly mortgage repayment of $109, with 23 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, Lake Biddy scores in decile 10 out of 10, which is well above the national average.
Lake Biddy is part of the Wheat Belt - South statistical area in Western Australia.
Lake Biddy details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 6355 |
| State | Western Australia (WA) |
| Phone Area Code | 08 |
| Population (2021) | 59 |
| Median Age | 44 years |
| Median Household Income (Census 2021) | $1,125/week |
| Median Personal Income (Census 2021) | $887/week |
| Median Weekly Rent (Census 2021) | $200 |
| Median Monthly Mortgage (Census 2021) | $109 |
| Average Household Size | 2.5 persons |
| Area | 575.7 km² |
| Population Density | 0/km² |
| Total Dwellings | 23 |
| Australian Citizens | 84.7% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -32.9117672 |
| Longitude | 118.9632061 |
| Distance from Perth | 310 km |
| Region (SA4) | Western Australia - Wheat Belt |
| Area (SA3) | Wheat Belt - South |
| Local Government | Lake Grace |
| Federal Electorate | O'Connor |
| State Electorate | Roe (Agricultural) |
| Time Zone | AWST (UTC+8), Australia/Perth (standard time) |
Age Profile
Show counts
| 0–14 years | 13 (22.0%) |
| 15–24 years | 5 (8.5%) |
| 25–44 years | 10 (16.9%) |
| 45–64 years | 23 (39.0%) |
| 65+ years | 13 (22.0%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 5 (8.5%) |
| Asthma | 4 (6.8%) |
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 | 0 (0.0%) |
| 2 vehicles | 7 (36.8%) |
| 3+ vehicles | 12 (63.2%) |
Suburbs Near Lake Biddy
Same Postcode (6355)
More Lake Biddy 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.