Australian Capital Territory · Capital City

Demographics & Identity in Australian Capital Territory

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

A noticeably younger population defines the Australian Capital Territory, where the typical resident is just 35. This creates a different daily rhythm compared to most of the country, with a significant share of the community in their prime working years. The territory has grown quickly, adding about 57,033 people since 2016.

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📍 Australian Capital Territory, Capital City

Where Australian Capital Territory sits — Total population

453,890
  • 1–2: 3 areas
  • 2–3: 0 areas
  • 3–5: 0 areas
  • 5–9: 0 areas
  • 9–16: 2 areas
  • 16–28: 1 area
  • 28–48: 1 area
  • 48–83: 0 areas
  • 83–144: 1 area
  • 144–251: 1 area
  • 251–436: 0 areas
  • 436–758: 2 areas
  • 758–1,316: 0 areas
  • 1,316–2,287: 1 area
  • 2,287–3,974: 2 areas
  • 3,974–6,906: 1 area
  • 6,906–11,999: 3 areas
  • 11,999–20,850: 1 area
  • 20,850–36,228: 0 areas
  • 36,228–62,950: 0 areas
  • 62,950–109,382: 1 area
  • 109,382–190,063: 1 area
  • 190,063–330,254: 2 areas
  • 330,254–573,849: 3 areas
  • 573,849–997,120: 0 areas
  • 997,120–1,732,595: 2 areas
  • 1,732,595–3,010,558: 4 areas
  • 3,010,558–5,231,147: 2 areas

All capital city areas, 2021. The marker is Australian Capital Territory — higher than 72% of areas.

Total population compared with the state and national average
Australian Capital Territory453,890
Australian Capital Territory 454,499
Australia 25,422,788

Population

How many people, and the typical age.

The total population grew 14% since 2016 to reach 453,890. This growth occurred while the typical age of residents remained steady at 35, which is three years younger than the national figure.

453,890

Higher than 72% of capital city areas.

  • 2016: 396,857
  • 2021: 453,890

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

35 yrs

Younger than 90% of capital city areas.

  • 2016: 35 yrs
  • 2021: 35 yrs

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

Age profile

How the population splits across age groups.

Young adults aged 25 to 44 make up the largest group at 32.4%. While the proportion of children is about the same as the national figure, the share of seniors is well below Australia's 17.2% at just 13.7%.

13.7%

Lower than 55% of capital city areas.

  • 2016: 12.6%
  • 2021: 13.7%

Share of the population aged 65 years and over.

18.3%

Higher than 73% of capital city areas.

  • 2016: 18.8%
  • 2021: 18.3%

Share of the population aged under 15 years.

Age structure

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In Australian Capital Territory, the largest group is Young adults (25–44) at 32%, followed by Older adults (45–64) (22%) and Children (0–14) (18%).

Identity & relationships

First Nations identity and marital status.

Aboriginal and Torres Strait Islander people make up 2.0% of the population, which is a little below the national figure. Those in de facto relationships rose to 12.5% since 2016, while 39.2% of residents have never been married.

12.5%

Lower than 57% of capital city areas.

  • 2016: 11.5%
  • 2021: 12.5%

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

Marital status

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In Australian Capital Territory, the largest group is Married at 47%, followed by Never married (39%) and Divorced (8%).

Age & sex structure

  • 85+: 85+: 2,860 males; 85+: 4,318 females
  • 80–84: 80–84: 3,327 males; 80–84: 4,267 females
  • 75–79: 75–79: 5,460 males; 75–79: 6,287 females
  • 70–74: 70–74: 7,994 males; 70–74: 9,154 females
  • 65–69: 65–69: 8,629 males; 65–69: 9,866 females
  • 60–64: 60–64: 10,224 males; 60–64: 11,212 females
  • 55–59: 55–59: 11,645 males; 55–59: 12,249 females
  • 50–54: 50–54: 13,331 males; 50–54: 13,559 females
  • 45–49: 45–49: 14,457 males; 45–49: 14,789 females
  • 40–44: 40–44: 15,984 males; 40–44: 16,102 females
  • 35–39: 35–39: 18,292 males; 35–39: 18,905 females
  • 30–34: 30–34: 18,935 males; 30–34: 19,487 females
  • 25–29: 25–29: 19,704 males; 25–29: 19,514 females
  • 20–24: 20–24: 17,042 males; 20–24: 17,132 females
  • 15–19: 15–19: 13,386 males; 15–19: 12,899 females
  • 10–14: 10–14: 14,007 males; 10–14: 13,077 females
  • 5–9: 5–9: 15,000 males; 5–9: 14,154 females
  • 0–4: 0–4: 13,746 males; 0–4: 12,907 females

Sources

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

More for Australian Capital Territory

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Australian Capital Territory [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/gccsa/8ACTE/australian-capital-territory/topic/demographics-identity