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AustraliaCommunity profile

Greater Capital Cities

Five year age groups

In 2021, the largest age group in Greater Capital Cities was 30 to 34 year olds. The group that changed the most since 2016 was 35 to 39 year olds, increasing by 205,115 people.

The Age Structure of Greater Capital Cities provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Greater Capital Cities'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 Greater Capital Cities'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
Greater Capital Cities - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%Australia %Number%Australia %2016 to 2021
0 to 4980,2745.95.8971,2626.46.3+9,012
5 to 91,043,8906.36.2968,9826.46.4+74,908
10 to 141,023,4126.26.2888,0605.96.0+135,352
15 to 19949,1485.75.7924,6376.16.1+24,511
20 to 241,093,8146.66.21,091,4117.26.7+2,403
25 to 291,234,8907.57.01,180,3477.87.1+54,543
30 to 341,302,5047.97.31,207,9558.07.3+94,549
35 to 391,288,6327.87.21,083,5177.16.7+205,115
40 to 441,129,8906.86.51,058,7607.06.8+71,130
45 to 491,083,3406.56.41,032,1896.86.8+51,151
50 to 541,039,6796.36.3963,0706.36.5+76,609
55 to 59959,5275.86.1887,5635.86.2+71,964
60 to 64876,5945.35.8772,3165.15.6+104,278
65 to 69756,2064.65.1689,1684.55.1+67,038
70 to 74668,6724.04.6508,5913.43.8+160,081
75 to 79475,5252.93.2379,0572.52.8+96,468
80 to 84327,8732.02.2273,6021.82.0+54,271
85 and over332,1822.02.1298,2532.02.1+33,929
Total population16,566,052100.0100.015,178,740100.0100.0+1,387,312
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 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 Greater Capital Cities 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, 18.4% of the population was aged between 0 and 15, and 15.5% were aged 65 years and over, compared with 18.2% and 17.2% respectively for Australia.

The major differences between the age structure of Greater Capital Cities and Australia were:

  • A larger percentage of persons aged 30 to 34 (7.9% compared to 7.3%)
  • A larger percentage of persons aged 35 to 39 (7.8% compared to 7.2%)
  • A smaller percentage of persons aged 65 to 69 (4.6% compared to 5.1%)
  • A smaller percentage of persons aged 70 to 74 (4.0% compared to 4.6%)

Emerging groups

From 2016 to 2021, Greater Capital Cities's population increased by 1,387,312 people (9.1%). This represents an average annual population change of 1.76% per year over the period.

The largest changes in age structure in this area between 2016 and 2021 were in the age groups:

  • 35 to 39 (+205,115 persons)
  • 70 to 74 (+160,081 persons)
  • 10 to 14 (+135,352 persons)
  • 60 to 64 (+104,278 persons)

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