Australia · Australia

Demographics & Identity in Australia

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

More than 25 million people call Australia home, where the population is gradually getting older. The typical resident is now 38 years old, reflecting a national trend toward an aging society.

Where Australia sits — Total population

25,422,788 ▲ +18.2%
  • 25,422,788–27,601,804: 1 area
  • 27,601,804–29,967,585: 0 areas
  • 29,967,585–32,536,140: 0 areas
  • 32,536,140–35,324,849: 0 areas
  • 35,324,849–38,352,582: 0 areas
  • 38,352,582–41,639,824: 0 areas
  • 41,639,824–45,208,820: 0 areas
  • 45,208,820–49,083,719: 0 areas
  • 49,083,719–53,290,740: 0 areas
  • 53,290,740–57,858,348: 0 areas
  • 57,858,348–62,817,452: 0 areas
  • 62,817,452–68,201,606: 0 areas
  • 68,201,606–74,047,243: 0 areas
  • 74,047,243–80,393,915: 0 areas
  • 80,393,915–87,284,567: 0 areas
  • 87,284,567–94,765,825: 0 areas
  • 94,765,825–102,888,310: 0 areas
  • 102,888,310–111,706,982: 0 areas
  • 111,706,982–121,281,513: 0 areas
  • 121,281,513–131,676,687: 0 areas
  • 131,676,687–142,962,843: 0 areas
  • 142,962,843–155,216,348: 0 areas
  • 155,216,348–168,520,115: 0 areas
  • 168,520,115–182,964,163: 0 areas
  • 182,964,163–198,646,226: 0 areas
  • 198,646,226–215,672,417: 0 areas
  • 215,672,417–234,157,941: 0 areas
  • 234,157,941–254,227,880: 0 areas

All australia areas, 2021. The marker is Australia.

Total population compared with the state and national average
Australia25,422,788
Australia 25,422,788

Population

How many people, and the typical age.

The total population grew by 18% since 2011, adding about 3.9 million people to reach a total of 25,422,788.

25,422,788 ▲ +18.2%

  • 2011: 21,507,719
  • 2016: 23,401,892
  • 2021: 25,422,788

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

38 yrs ▲ +2.7%

  • 2011: 37 yrs
  • 2016: 38 yrs
  • 2021: 38 yrs

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

Age profile

How the population splits across age groups.

Seniors aged 65 and over now make up 17.2% of the population, which is 3.2 percentage points higher than in 2011. Meanwhile, the share of children under 15 fell by 1.0 percentage point to 18.2%.

17.2% ▲ +23.0%

  • 2011: 14.0%
  • 2016: 15.7%
  • 2021: 17.2%

Share of the population aged 65 years and over.

18.2% ▼ -5.3%

  • 2011: 19.3%
  • 2016: 18.7%
  • 2021: 18.2%

Share of the population aged under 15 years.

Age structure

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Australia splits fairly evenly between Young adults (25–44) (28%) and Older adults (45–64) (25%), with Children (0–14) at 18%.

Identity & relationships

First Nations identity and marital status.

Nearly half the population is married, though de facto relationships rose to 11.5% since 2011. People identifying as Aboriginal and Torres Strait Islander make up 3.2% of the population, a figure that has barely changed.

11.5% ▲ +21.5%

  • 2011: 9.5%
  • 2016: 10.4%
  • 2021: 11.5%

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

Marital status

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

Age & sex structure

  • 85+: 85+: 210,439 males; 85+: 331,906 females
  • 80–84: 80–84: 252,476 males; 80–84: 302,129 females
  • 75–79: 75–79: 392,637 males; 75–79: 429,281 females
  • 70–74: 70–74: 561,275 males; 70–74: 599,493 females
  • 65–69: 65–69: 625,898 males; 65–69: 672,561 females
  • 60–64: 60–64: 711,159 males; 60–64: 756,943 females
  • 55–59: 55–59: 754,242 males; 55–59: 787,674 females
  • 50–54: 50–54: 787,164 males; 50–54: 823,781 females
  • 45–49: 45–49: 802,516 males; 45–49: 833,442 females
  • 40–44: 40–44: 814,410 males; 40–44: 834,435 females
  • 35–39: 35–39: 901,697 males; 35–39: 937,130 females
  • 30–34: 30–34: 904,395 males; 30–34: 948,691 females
  • 25–29: 25–29: 886,836 males; 25–29: 884,837 females
  • 20–24: 20–24: 806,829 males; 20–24: 772,711 females
  • 15–19: 15–19: 749,330 males; 15–19: 708,485 females
  • 10–14: 10–14: 816,592 males; 10–14: 771,460 females
  • 5–9: 5–9: 814,704 males; 5–9: 771,436 females
  • 0–4: 0–4: 752,557 males; 0–4: 711,258 females

Sources

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

More for Australia

Cite this page

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