Western Australia · State / Territory

Demographics & Identity in Western Australia

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

A population of 2,660,026 people lives in Western Australia, with a typical age of 38. This is about the same as the national figure, though the state has seen a significant 19% growth in its population since 2011.

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📍 Western Australia, State / Territory

Where Western Australia sits — Total population

2,660,026 ▲ +18.8%
  • 4,788–6,243: 1 area
  • 6,243–8,140: 0 areas
  • 8,140–10,614: 0 areas
  • 10,614–13,840: 0 areas
  • 13,840–18,046: 0 areas
  • 18,046–23,530: 0 areas
  • 23,530–30,681: 0 areas
  • 30,681–40,004: 0 areas
  • 40,004–52,162: 0 areas
  • 52,162–68,014: 0 areas
  • 68,014–88,683: 0 areas
  • 88,683–115,634: 0 areas
  • 115,634–150,775: 0 areas
  • 150,775–196,595: 0 areas
  • 196,595–256,340: 1 area
  • 256,340–334,241: 0 areas
  • 334,241–435,817: 0 areas
  • 435,817–568,262: 2 areas
  • 568,262–740,956: 0 areas
  • 740,956–966,133: 0 areas
  • 966,133–1,259,740: 0 areas
  • 1,259,740–1,642,575: 0 areas
  • 1,642,575–2,141,752: 1 area
  • 2,141,752–2,792,630: 1 area
  • 2,792,630–3,641,309: 0 areas
  • 3,641,309–4,747,901: 0 areas
  • 4,747,901–6,190,786: 1 area
  • 6,190,786–8,072,163: 2 areas

All state / territory areas, 2021. The marker is Western Australia.

Total population compared with the state and national average
Western Australia2,660,026
Australia 25,422,788

Population

How many people, and the typical age.

The total population grew by about 420,856 people between 2011 and 2021. During this time, the typical resident became slightly older, moving from 36 to 38 years old.

2,660,026 ▲ +18.8%

  • 2011: 2,239,170
  • 2016: 2,474,410
  • 2021: 2,660,026

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

38 yrs ▲ +5.6%

  • 2011: 36 yrs
  • 2016: 36 yrs
  • 2021: 38 yrs

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

Age profile

How the population splits across age groups.

Children under 15 make up 19% of the population, which is much higher than most other similar areas. Meanwhile, the proportion of people aged 65 and over is 16.1%, a little below the national figure of 17.2%.

16.1% ▲ +31.3%

  • 2011: 12.3%
  • 2016: 14.0%
  • 2021: 16.1%

Share of the population aged 65 years and over.

19.0% ▼ -3.3%

  • 2011: 19.7%
  • 2016: 19.3%
  • 2021: 19.0%

Share of the population aged under 15 years.

Age structure

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Western Australia splits fairly evenly between Young adults (25–44) (28%) and Older adults (45–64) (25%), with Children (0–14) at 19%.

Identity & relationships

First Nations identity and marital status.

About 3.3% of residents identify as Aboriginal and Torres Strait Islander, which is about the same as the national average. Those in de facto relationships make up 12.2% of the population, a figure that rose 1.2 percentage points since 2011.

12.2% ▲ +11.0%

  • 2011: 11.0%
  • 2016: 11.7%
  • 2021: 12.2%

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

Marital status

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In Western Australia, the largest group is Married at 47%, followed by Never married (36%) and Divorced (9%).

Age & sex structure

  • 85+: 85+: 19,646 males; 85+: 30,457 females
  • 80–84: 80–84: 24,274 males; 80–84: 28,842 females
  • 75–79: 75–79: 37,811 males; 75–79: 40,201 females
  • 70–74: 70–74: 56,410 males; 70–74: 58,785 females
  • 65–69: 65–69: 63,860 males; 65–69: 68,326 females
  • 60–64: 60–64: 73,796 males; 60–64: 76,868 females
  • 55–59: 55–59: 80,808 males; 55–59: 81,965 females
  • 50–54: 50–54: 86,687 males; 50–54: 86,940 females
  • 45–49: 45–49: 87,066 males; 45–49: 87,572 females
  • 40–44: 40–44: 89,191 males; 40–44: 89,399 females
  • 35–39: 35–39: 99,534 males; 35–39: 101,372 females
  • 30–34: 30–34: 95,911 males; 30–34: 100,399 females
  • 25–29: 25–29: 88,058 males; 25–29: 87,980 females
  • 20–24: 20–24: 81,122 males; 20–24: 77,702 females
  • 15–19: 15–19: 78,685 males; 15–19: 74,580 females
  • 10–14: 10–14: 88,139 males; 10–14: 83,238 females
  • 5–9: 5–9: 88,612 males; 5–9: 84,042 females
  • 0–4: 0–4: 83,249 males; 0–4: 78,503 females

Sources

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

More for Western Australia

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Western Australia [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/ste/5/western-australia/topic/demographics-identity