Colac, VIC
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's less advantaged suburbs
Colac is more socio-economically advantaged than about 7% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 875, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Colac at a glance
- Population (2021)
- 9,243
- Median age
- 44
- Median weekly household income
- $1,108
- SEIFA score
- 875
- Coordinates
- -38.3096, 143.5875
Colac demographics (2021 Census)
The figures below profile Colac using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is seniors (65+) at 26%, 30% of homes are rented, and 12% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 1,483 | 16% |
| Youth (15–24) | 964 | 10% |
| Young adults (25–44) | 2,257 | 24% |
| Mid-life (45–64) | 2,124 | 23% |
| Seniors (65+) | 2,434 | 26% |
Share of the 9,262 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 1,481 | 38% |
| Owned with a mortgage | 1,071 | 28% |
| Rented | 1,165 | 30% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 3,326 | 86% |
| Townhouses & semis | 488 | 13% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 3,866 occupied private dwellings in Colac.
- Median weekly rent
- $260
- Median monthly mortgage
- $1,213
- Average household size
- 2.2 people
- Median weekly family income
- $1,541
- Median weekly personal income
- $661
Community and culture
- Born overseas
- 1,008 (12%)
- Speaks a language other than English at home
- 735 (8%)
- Aboriginal and/or Torres Strait Islander
- 156 (2%)
Work and education
- Completed Year 12
- 2,824 (38%)
- Labour-force participation
- 53.9%
- Unemployment rate
- 3.3%
- Employed full-time
- 2,301
- Employed part-time
- 1,423
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in Colac
Based on 2014–2023 records, the warmest month in Colac is January (average daytime high around 25.1°C) and the coolest is July (around 11.7°C). The area receives roughly 690 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 25.1°C | 13.9°C | 49 mm |
| Feb | 23.8°C | 13.6°C | 33 mm |
| Mar | 21.9°C | 12.8°C | 45 mm |
| Apr | 18.2°C | 10.7°C | 55 mm |
| May | 14.7°C | 8.7°C | 69 mm |
| Jun | 12.3°C | 7.1°C | 55 mm |
| Jul | 11.7°C | 6.4°C | 61 mm |
| Aug | 12.3°C | 6.3°C | 63 mm |
| Sep | 14.5°C | 7.3°C | 77 mm |
| Oct | 17.5°C | 8.5°C | 79 mm |
| Nov | 19.7°C | 10.1°C | 57 mm |
| Dec | 22.6°C | 11.9°C | 47 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Colac
Where is Colac?
Colac is a suburb of Victoria, Australia.
What is the population of Colac?
At the 2021 Census, Colac had a population of about 9,243.
Is Colac an advantaged area?
Colac has an ABS SEIFA score of 875, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 7 out of 100 — more socio-economically advantaged than about 7% of Australian suburbs.
What is the weather like in Colac?
Colac has average daytime highs of about 17.9°C and overnight lows of about 9.8°C, with roughly 690 mm of rain across the year (based on 2014–2023 climate normals).
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