Western Australia · Postcode 6164
Treeby postcode and suburb data
Western Australia · Phone area code 08 · 19 km from Perth
Suburb snapshot
Treeby 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 Treeby ranks: household income is in the top 10% of WA suburbs; rents are among the top 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
Treeby vs the WA average and the national average, using population-weighted 2021 Census data.
| Metric | Treeby | WA avg | AU avg | Greater Perth |
|---|---|---|---|---|
| Household income/wk | $2,479 +WA | $1,891 | $1,836 | $1,962 |
| Rent/wk | $450 +WA | $355 | $390 | $378 |
| Mortgage/month | $2,000 ≈WA | $1,890 | $1,958 | $2,002 |
| Median age | 32 | 43.0 | 45.0 | 40.0 |
| SEIFA decile | 10/10 +WA | 6.0/10 | 6.0/10 | 8.0/10 |
| Unemployment | 2.9% -WA | 5.0% | 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.
Postcode 6164 covers Treeby, an inland suburb of Perth about 19 km from the city centre. It forms part of the Perth - South West region of Western Australia. Local government services are provided by Cockburn.
According to the 2021 Census, Treeby has a population of 4,214 with a median age of 32. The median weekly household income is $2,479, above the WA average. The unemployment rate is 2.9%, lower than the WA average. The Indigenous population is 26 (0.6% of residents).
Housing in Treeby includes a median weekly rent of $450, median monthly mortgage repayment of $2,000, with 1,483 total dwellings. These housing costs sit above the WA average. Owner-occupied dwellings (owned or mortgaged) make up 84.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Treeby scores in decile 10 out of 10, which is well above the national average.
Treeby is served by Treeby Primary School.
Treeby is part of the Cockburn statistical area in Western Australia.
Treeby details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 6164 |
| State | Western Australia (WA) |
| Phone Area Code | 08 |
| Population (2021) | 4,214 |
| Median Age | 32 years |
| Median Household Income (Census 2021) | $2,479/week |
| Median Personal Income (Census 2021) | $1,197/week |
| Median Weekly Rent (Census 2021) | $450 |
| Median Monthly Mortgage (Census 2021) | $2,000 |
| Average Household Size | 2.7 persons |
| Area | 8.2 km² |
| Population Density | 512/km² |
| Total Dwellings | 1,483 |
| Australian Citizens | 80.1% |
| Indigenous Population | 26 (0.6%) |
| Unemployment Rate | 2.9% |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -32.1218 |
| Longitude | 115.895 |
| Distance from Perth | 19 km |
| Region (SA4) | Perth - South West |
| Area (SA3) | Cockburn |
| Local Government | Cockburn |
| Federal Electorate | Fremantle |
| State Electorate | Willagee (South Metropolitan) |
| Time Zone | AWST (UTC+8), Australia/Perth (standard time) |
Age Profile
Show counts
| 0–14 years | 854 (20.3%) |
| 15–24 years | 416 (9.9%) |
| 25–44 years | 1,904 (45.2%) |
| 45–64 years | 583 (13.8%) |
| 65+ years | 456 (10.8%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 276 (6.5%) |
| Arthritis | 186 (4.4%) |
| Diabetes | 126 (3.0%) |
| Heart Disease | 103 (2.4%) |
| Dementia | 69 (1.6%) |
| Cancer | 68 (1.6%) |
| Lung Condition | 38 (0.9%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 12 (0.8%) |
| 1 vehicle | 434 (29.5%) |
| 2 vehicles | 801 (54.4%) |
| 3+ vehicles | 225 (15.3%) |
Schools in Treeby
ACARA 2025 school profiles for schools located in Treeby. ICSEA is shown where ACARA publishes it.
Suburbs Near Treeby
Same Postcode (6164)
More Treeby 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.