Boulder, WA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's less advantaged suburbs
Boulder is more socio-economically advantaged than about 14% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 911, 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.
Boulder at a glance
- Population (2021)
- 4,872
- Median age
- 35
- Median weekly household income
- $1,968
- SEIFA score
- 911
- Coordinates
- -30.7753, 121.4886
Boulder demographics (2021 Census)
The figures below profile Boulder 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 young adults (25–44) at 29%, 34% of homes are rented, and 22% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 1,109 | 23% |
| Youth (15–24) | 580 | 12% |
| Young adults (25–44) | 1,426 | 29% |
| Mid-life (45–64) | 1,267 | 26% |
| Seniors (65+) | 493 | 10% |
Share of the 4,875 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 339 | 21% |
| Owned with a mortgage | 675 | 41% |
| Rented | 562 | 34% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 1,340 | 82% |
| Townhouses & semis | 258 | 16% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 1,639 occupied private dwellings in Boulder.
- Median weekly rent
- $300
- Median monthly mortgage
- $1,302
- Average household size
- 2.4 people
- Median weekly family income
- $2,337
- Median weekly personal income
- $1,019
Community and culture
- Born overseas
- 894 (22%)
- Speaks a language other than English at home
- 409 (10%)
- Aboriginal and/or Torres Strait Islander
- 409 (8%)
Work and education
- Completed Year 12
- 1,241 (34%)
- Labour-force participation
- 62.2%
- Unemployment rate
- 4.6%
- Employed full-time
- 1,554
- Employed part-time
- 538
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 Boulder
Based on 2014–2023 records, the warmest month in Boulder is January (average daytime high around 33.2°C) and the coolest is July (around 16.8°C). The area receives roughly 241 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 33.2°C | 18.7°C | 27 mm |
| Feb | 32.1°C | 18.7°C | 28 mm |
| Mar | 29.6°C | 17.4°C | 26 mm |
| Apr | 24.9°C | 14°C | 18 mm |
| May | 20.4°C | 10°C | 12 mm |
| Jun | 17.1°C | 7.7°C | 21 mm |
| Jul | 16.8°C | 6.8°C | 21 mm |
| Aug | 18.7°C | 7.6°C | 21 mm |
| Sep | 23.1°C | 9.9°C | 9 mm |
| Oct | 26.9°C | 13°C | 17 mm |
| Nov | 29.3°C | 14.9°C | 30 mm |
| Dec | 32.7°C | 17.5°C | 11 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Boulder
Where is Boulder?
Boulder is a suburb of Western Australia, Australia.
What is the population of Boulder?
At the 2021 Census, Boulder had a population of about 4,872.
Is Boulder an advantaged area?
Boulder has an ABS SEIFA score of 911, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 14 out of 100 — more socio-economically advantaged than about 14% of Australian suburbs.
What is the weather like in Boulder?
Boulder has average daytime highs of about 25.4°C and overnight lows of about 13°C, with roughly 241 mm of rain across the year (based on 2014–2023 climate normals).
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