South Boulder, WA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's less advantaged suburbs
South Boulder is more socio-economically advantaged than about 7% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 874, 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.
South Boulder at a glance
- Population (2021)
- 1,506
- Median age
- 35
- Median weekly household income
- $1,848
- SEIFA score
- 874
- Coordinates
- -30.8019, 121.5105
South Boulder demographics (2021 Census)
The figures below profile South 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 31%, 28% of homes are rented, and 17% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 250 | 17% |
| Youth (15–24) | 221 | 15% |
| Young adults (25–44) | 471 | 31% |
| Mid-life (45–64) | 431 | 29% |
| Seniors (65+) | 128 | 9% |
Share of the 1,501 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 115 | 27% |
| Owned with a mortgage | 164 | 39% |
| Rented | 118 | 28% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 387 | 91% |
| Townhouses & semis | 8 | 2% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 426 occupied private dwellings in South Boulder.
- Median weekly rent
- $300
- Median monthly mortgage
- $1,250
- Average household size
- 2.4 people
- Median weekly family income
- $2,250
- Median weekly personal income
- $909
Community and culture
- Born overseas
- 216 (17%)
- Speaks a language other than English at home
- 68 (7%)
- Aboriginal and/or Torres Strait Islander
- 333 (22%)
Work and education
- Completed Year 12
- 306 (25%)
- Labour-force participation
- 46.8%
- Unemployment rate
- 6.1%
- Employed full-time
- 394
- Employed part-time
- 125
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 South Boulder
Based on 2014–2023 records, the warmest month in South 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 South Boulder
Where is South Boulder?
South Boulder is a suburb of Western Australia, Australia.
What is the population of South Boulder?
At the 2021 Census, South Boulder had a population of about 1,506.
Is South Boulder an advantaged area?
South Boulder has an ABS SEIFA score of 874, 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 South Boulder?
South 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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