Boulder · Suburb / Locality

Demographics & Identity in Boulder

Who lives here — how many people, how old they are, and how communities identify.

Nearly half of the people in Boulder have never married, marking it as a particularly young and dynamic area. With a typical resident aged just 35, the population is noticeably younger than the Western Australian and national figures.

Open map →
📍 Boulder, Suburb / Locality

Where Boulder sits — Total population

4,872 ▼ -9.1%
  • 1–1: 689 areas
  • 1–2: 0 areas
  • 2–3: 119 areas
  • 3–5: 108 areas
  • 5–7: 243 areas
  • 7–11: 241 areas
  • 11–16: 514 areas
  • 16–24: 579 areas
  • 24–36: 898 areas
  • 36–53: 1059 areas
  • 53–79: 1168 areas
  • 79–117: 1203 areas
  • 117–174: 1171 areas
  • 174–258: 1010 areas
  • 258–384: 856 areas
  • 384–571: 670 areas
  • 571–850: 616 areas
  • 850–1,263: 567 areas
  • 1,263–1,879: 520 areas
  • 1,879–2,794: 590 areas
  • 2,794–4,154: 679 areas
  • 4,154–6,177: 585 areas
  • 6,177–9,186: 528 areas
  • 9,186–13,659: 405 areas
  • 13,659–20,311: 195 areas
  • 20,311–30,202: 96 areas
  • 30,202–44,910: 33 areas
  • 44,910–66,781: 10 areas

All suburb / locality areas, 2021. The marker is Boulder — higher than 86% of areas.

Total population compared with the state and national average
Boulder4,872
6432, WA 7,150
Western Australia 2,660,026
Australia 25,422,788

Population

How many people, and the typical age.

Boulder is larger than about 89% of similar areas, with 4,872 people living here.

4,872 ▼ -9.1%

Higher than 86% of suburb / locality areas.

  • 2011: 5,359
  • 2016: 4,825
  • 2021: 4,872

The number of people who usually live in the area, counted on Census night.

35 yrs ▲ +16.7%

Younger than 86% of suburb / locality areas.

  • 2011: 30 yrs
  • 2016: 33 yrs
  • 2021: 35 yrs

Half the population is older than this age, and half younger.

Age profile

How the population splits across age groups.

The area is skewed young, as the 22.7% of children under 15 is well above the national figure. This is reflected in the small number of seniors, who make up only 10.2% of the population, which is well below the state and national averages.

10.2% ▲ +81.7%

Lower than 83% of suburb / locality areas.

  • 2011: 5.6%
  • 2016: 7.6%
  • 2021: 10.2%

Share of the population aged 65 years and over.

22.7% ▼ -3.2%

Higher than 83% of suburb / locality areas.

  • 2011: 23.5%
  • 2016: 22.5%
  • 2021: 22.7%

Share of the population aged under 15 years.

Age structure

View on map →

Boulder splits fairly evenly between Young adults (25–44) (29%) and Older adults (45–64) (26%), with Children (0–14) at 23%.

Identity & relationships

First Nations identity and marital status.

Aboriginal and Torres Strait Islander people make up 8.4% of the community, a figure well above the national average of 3.2%. Those in de facto relationships are also much more common here than in most areas, at 19.6%.

8.4% ▲ +4.4%

Higher than 86% of suburb / locality areas.

  • 2011: 8.0%
  • 2016: 10.1%
  • 2021: 8.4%

Share of people who identify as Aboriginal and/or Torres Strait Islander.

19.6% ▼ -3.5%

Higher than 87% of suburb / locality areas.

  • 2011: 20.3%
  • 2016: 19.0%
  • 2021: 19.6%

Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).

Marital status

View on map →

In Boulder, the largest group is Never married at 47%, followed by Married (35%) and Divorced (10%).

Age & sex structure

  • 85+: 85+: 7 males; 85+: 11 females
  • 80–84: 80–84: 26 males; 80–84: 16 females
  • 75–79: 75–79: 43 males; 75–79: 28 females
  • 70–74: 70–74: 78 males; 70–74: 67 females
  • 65–69: 65–69: 121 males; 65–69: 98 females
  • 60–64: 60–64: 188 males; 60–64: 117 females
  • 55–59: 55–59: 176 males; 55–59: 149 females
  • 50–54: 50–54: 179 males; 50–54: 159 females
  • 45–49: 45–49: 166 males; 45–49: 140 females
  • 40–44: 40–44: 179 males; 40–44: 155 females
  • 35–39: 35–39: 191 males; 35–39: 164 females
  • 30–34: 30–34: 158 males; 30–34: 180 females
  • 25–29: 25–29: 205 males; 25–29: 195 females
  • 20–24: 20–24: 195 males; 20–24: 132 females
  • 15–19: 15–19: 125 males; 15–19: 126 females
  • 10–14: 10–14: 195 males; 10–14: 170 females
  • 5–9: 5–9: 197 males; 5–9: 189 females
  • 0–4: 0–4: 184 males; 0–4: 179 females

Sources

  • Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).

More for Boulder

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Boulder [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL50159/boulder/topic/demographics-identity