Western Australia · Postcode 6225
Lyalls Mill postcode and suburb data
Western Australia · Phone area code 08 · 170 km from Perth
Suburb snapshot
Lyalls Mill 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 Lyalls Mill ranks: household income sits in the bottom 10% of WA suburbs; SEIFA decile 2 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Lyalls Mill vs the WA average and the national average, using population-weighted 2021 Census data.
| Metric | Lyalls Mill | WA avg | AU avg |
|---|---|---|---|
| Household income/wk | $474 -WA | $1,891 | $1,836 |
| Mortgage/month | $2,584 +WA | $1,890 | $1,958 |
| Median age | 48 | 43.0 | 45.0 |
| SEIFA decile | 2/10 -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.
Lyalls Mill is a locality 170 km from Perth in Western Australia, classified as outer regional by the ABS. The postcode is 6225. It falls within the Western Australia - Wheat Belt region. The local government area is Collie.
According to the 2021 Census, Lyalls Mill has a population of 17 with a median age of 48. The median weekly household income is $474, below the WA average.
Housing in Lyalls Mill includes a median monthly mortgage repayment of $2,584, 6 total dwellings. These housing costs sit above 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, Lyalls Mill scores in decile 2 out of 10, which is well below the national average.
Lyalls Mill is part of the Wheat Belt - South statistical area in Western Australia.
Lyalls Mill details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 6225 |
| State | Western Australia (WA) |
| Phone Area Code | 08 |
| Population (2021) | 17 |
| Median Age | 48 years |
| Median Household Income (Census 2021) | $474/week |
| Median Personal Income (Census 2021) | $474/week |
| Median Monthly Mortgage (Census 2021) | $2,584 |
| Average Household Size | 2.3 persons |
| Area | 38.8 km² |
| Population Density | 0/km² |
| Total Dwellings | 6 |
| Australian Citizens | 100.0% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 2/10 (well below average) |
| Latitude | -33.4609905 |
| Longitude | 116.1259177 |
| Distance from Perth | 170 km |
| Region (SA4) | Western Australia - Wheat Belt |
| Area (SA3) | Wheat Belt - South |
| Local Government | Collie |
| Federal Electorate | O'Connor |
| State Electorate | Warren-Blackwood (South West) |
| Time Zone | AWST (UTC+8), Australia/Perth (standard time) |
Age Profile
Show counts
| 0–14 years | 0 (0.0%) |
| 15–24 years | 9 (52.9%) |
| 25–44 years | 0 (0.0%) |
| 45–64 years | 3 (17.6%) |
| 65+ years | 0 (0.0%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 3 (17.6%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Suburbs Near Lyalls Mill
Same Postcode (6225)
More Lyalls Mill 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.