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AustraliaCommunity profile

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 14,849 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 persons (Enumerated)20212001Change
Five year age groups (years)Number%Australia %Number%Australia %2001 to 2021
0 to 426,6035.95.820,3316.66.6+6,272
5 to 928,9986.46.221,7557.07.1+7,243
10 to 1427,0056.06.223,4917.67.1+3,514
15 to 1926,4825.95.724,4897.97.1+1,993
20 to 2434,5077.66.225,3678.26.6+9,140
25 to 2939,2218.77.024,3727.97.0+14,849
30 to 3438,4008.57.324,4107.97.5+13,990
35 to 3937,1778.27.224,3537.97.6+12,824
40 to 4431,9957.16.524,2297.87.7+7,766
45 to 4929,2856.56.423,1677.57.0+6,118
50 to 5426,7655.96.322,1017.16.7+4,664
55 to 5923,6895.26.115,1234.95.2+8,566
60 to 6421,0614.75.810,3213.34.2+10,740
65 to 6918,1104.05.17,6262.53.5+10,484
70 to 7416,7653.74.66,6252.13.3+10,140
75 to 7911,5052.53.25,5601.82.7+5,945
80 to 847,5351.72.23,3621.11.7+4,173
85 and over7,2001.62.12,5020.81.4+4,698
Total population452,303100.0100.0309,184100.0100.0+143,119
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 five year age groups of Australian Capital Territory in 2021 compared to Australia shows that there was a similar proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).

Overall, 18.3% of the population was aged between 0 and 15, and 13.5% were aged 65 years and over, compared with 18.2% and 17.2% respectively for Australia.

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

  • A larger percentage of persons aged 25 to 29 (8.7% compared to 7.0%)
  • A larger percentage of persons aged 20 to 24 (7.6% compared to 6.2%)
  • A larger percentage of persons aged 30 to 34 (8.5% compared to 7.3%)
  • A smaller percentage of persons aged 60 to 64 (4.7% compared to 5.8%)

Emerging groups

From 2001 to 2021, Australian Capital Territory's population increased by 143,119 people (46.3%). This represents an average annual population change of 1.92% per year over the period.

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

  • 25 to 29 (+14,849 persons)
  • 30 to 34 (+13,990 persons)
  • 35 to 39 (+12,824 persons)
  • 60 to 64 (+10,740 persons)

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