Victoria · Postcode 3250
Colac postcode and suburb data
Victoria · Phone area code 03 · 134 km from Melbourne
Suburb snapshot
Colac at a glance vs VIC
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against VIC
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Colac ranks: household income sits in the bottom 25% of VIC suburbs; SEIFA decile 1 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Colac vs the VIC average and the national average, using population-weighted 2021 Census data.
| Metric | Colac | VIC avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,108 -VIC | $1,817 | $1,836 |
| Rent/wk | $260 -VIC | $375 | $390 |
| Mortgage/month | $1,213 -VIC | $1,933 | $1,958 |
| Median age | 44 | 46.0 | 45.0 |
| SEIFA decile | 1/10 -VIC | 6.0/10 | 6.0/10 |
| Unemployment | 3.2% -VIC | 5.0% | 5.0% |
Green pill = at least 10% above the VIC average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Colac is a locality 134 km from Melbourne in Victoria, classified as inner regional by the ABS. The postcode is 3250. It falls within the Warrnambool and South West region. The local government area is Colac Otway.
According to the 2021 Census, Colac has a population of 9,243 with a median age of 44. The median weekly household income is $1,108, below the VIC average. The unemployment rate is 3.2%, lower than the VIC average. The Indigenous population is 156 (1.7% of residents).
Housing in Colac includes a median weekly rent of $260, median monthly mortgage repayment of $1,213, with 3,874 total dwellings. Housing costs in the area sit below the VIC average. Owner-occupied dwellings (owned or mortgaged) make up 68.7% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Colac scores in decile 1 out of 10, which is well below the national average.
There are 7 schools in the Colac area, including Trinity College Colac, Colac Secondary College, St Mary's School and others.
Colac is part of the Colac - Corangamite statistical area in Victoria.
Colac details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 3250 |
| State | Victoria (VIC) |
| Phone Area Code | 03 |
| Population (2021) | 9,243 |
| Median Age | 44 years |
| Median Household Income (Census 2021) | $1,108/week |
| Median Personal Income (Census 2021) | $661/week |
| Median Weekly Rent (Census 2021) | $260 |
| Median Monthly Mortgage (Census 2021) | $1,213 |
| Average Household Size | 2.2 persons |
| Area | 37.6 km² |
| Population Density | 246/km² |
| Total Dwellings | 3,874 |
| Australian Citizens | 87.3% |
| Indigenous Population | 156 (1.7%) |
| Unemployment Rate | 3.2% |
| SEIFA IRSAD Decile | 1/10 (well below average) |
| Latitude | -38.3410186 |
| Longitude | 143.5854622 |
| Distance from Melbourne | 134 km |
| Region (SA4) | Warrnambool and South West |
| Area (SA3) | Colac - Corangamite |
| Local Government | Colac Otway |
| Federal Electorate | Wannon |
| State Electorate | Polwarth (Western Victoria) |
| Time Zone | AEST (UTC+10), Australia/Melbourne (standard time) |
Age Profile
Show counts
| 0–14 years | 1,483 (16.0%) |
| 15–24 years | 964 (10.4%) |
| 25–44 years | 2,257 (24.4%) |
| 45–64 years | 2,124 (23.0%) |
| 65+ years | 2,434 (26.3%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 1,151 (12.5%) |
| Asthma | 850 (9.2%) |
| Diabetes | 582 (6.3%) |
| Heart Disease | 493 (5.3%) |
| Cancer | 315 (3.4%) |
| Lung Condition | 264 (2.9%) |
| Dementia | 134 (1.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 376 (10.0%) |
| 1 vehicle | 1,567 (41.6%) |
| 2 vehicles | 1,254 (33.3%) |
| 3+ vehicles | 569 (15.1%) |
Schools in Colac
ACARA 2025 school profiles for schools located in Colac. ICSEA is shown where ACARA publishes it.
Suburbs Near Colac
Same Postcode (3250)
More Colac 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.