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Australian Capital Territory

Five year age groups

In 2021, the largest age group in Australian Capital Territory was 25 to 29 year olds. The group that changed the most since 2001 was 25 to 29 year olds, increasing by 7,157 people.

The Age Structure of Australian Capital Territory provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Australian Capital Territory's residential role and function and how it is likely to change in the future.

Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.

To get a more complete picture Australian Capital Territory's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.

Q:

Derived from the Census question:

'What is the person's date of birth or age?'

Age structure - Five year age groups
Australian Capital Territory - Total females (Usual residence)20212001Change
Five year age groups (years)Number%Australia %Number%Australia %2001 to 2021
0 to 412,9075.65.510,0666.46.4+2,841
5 to 914,1546.26.010,6966.86.8+3,458
10 to 1413,0775.76.010,9797.06.8+2,098
15 to 1912,8995.65.511,8007.56.8+1,099
20 to 2417,1327.56.012,6188.06.4+4,514
25 to 2919,5148.56.912,3577.87.0+7,157
30 to 3419,4878.57.412,5288.07.5+6,959
35 to 3918,9058.27.312,5648.07.7+6,341
40 to 4416,1027.06.512,6378.07.7+3,465
45 to 4914,7896.46.512,0347.67.0+2,755
50 to 5413,5595.96.411,3727.26.6+2,187
55 to 5912,2495.36.17,6594.95.1+4,590
60 to 6411,2124.95.95,3973.44.2+5,815
65 to 699,8664.35.24,1112.63.6+5,755
70 to 749,1544.04.73,6502.33.4+5,504
75 to 796,2872.73.33,2272.03.0+3,060
80 to 844,2671.92.32,0941.32.1+2,173
85 and over4,3151.92.61,7561.11.9+2,559
Total population229,875100.0100.0157,545100.0100.0+72,330
Source: Australian Bureau of Statistics, Census of Population and Housing 2001 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the female five year age groups of Australian Capital Territory in 2021 compared to Australia shows that there was a similar proportion of females in the younger age groups (under 15) and a lower proportion of females in the older age groups (65+).

Overall, 17.5% of the female population was aged between 0 and 15, and 14.7% were aged 65 years and over, compared with 17.5% and 18.1% respectively for Australia.

The major differences between the female age structure of Australian Capital Territory and Australia were:

  • A larger percentage of females aged 25 to 29 (8.5% compared to 6.9%)
  • A larger percentage of females aged 20 to 24 (7.5% compared to 6.0%)
  • A larger percentage of females aged 30 to 34 (8.5% compared to 7.4%)
  • A smaller percentage of females aged 60 to 64 (4.9% compared to 5.9%)

Emerging groups

From 2001 to 2021, Australian Capital Territory's female population increased by 72,330 people (45.9%). This represents an average annual population change of 1.91% per year over the period.

The largest changes in female age structure in this area between 2001 and 2021 were in the age groups:

  • 25 to 29 (+7,157 females)
  • 30 to 34 (+6,959 females)
  • 35 to 39 (+6,341 females)
  • 60 to 64 (+5,815 females)

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