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City of PerthCommunity profile

City of Perth

Five year age groups

In 2021, the largest age group in the City of Perth was 25 to 29 year olds. The group that changed the most since 1991 was 30 to 34 year olds, increasing by 3,518 people.

The Age Structure of the City of Perth provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the City of Perth'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 the City of Perth'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
City of Perth - Total persons (Enumerated)20211991Change
Five year age groups (years)Number%Greater Perth %Number%Greater Perth %1991 to 2021
0 to 41,0813.36.32592.47.4+821
5 to 96902.16.62202.07.6+469
10 to 145591.76.52332.17.6+325
15 to 191,4764.66.01,13410.38.3+341
20 to 243,80611.86.31,69015.48.2+2,115
25 to 294,56214.16.71,16010.57.8+3,401
30 to 344,49613.97.59788.98.2+3,518
35 to 393,27110.17.77987.38.0+2,472
40 to 442,1626.76.87977.28.0+1,365
45 to 491,6995.36.56806.26.0+1,019
50 to 541,7015.36.45995.44.8+1,101
55 to 591,6175.05.94854.44.0+1,131
60 to 641,4404.55.35084.63.8+932
65 to 691,2523.94.74814.43.4+771
70 to 741,0273.24.23573.22.6+669
75 to 796482.02.92522.32.1+396
80 to 844621.42.02091.91.3+252
85 and over3821.22.01601.50.9+221
Total population32,331100.0100.011,010100.0100.0+21,321
Source: Australian Bureau of Statistics, Census of Population and Housing 1991 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 the City of Perth in 2021 compared to Greater Perth shows that there was a lower proportion of people in the younger age groups (under 15) as well as a lower proportion of people in the older age groups (65+).

Overall, 7.2% of the population was aged between 0 and 15, and 11.7% were aged 65 years and over, compared with 19.4% and 15.7% respectively for Greater Perth.

The major differences between the age structure of the City of Perth and Greater Perth were:

  • A larger percentage of persons aged 25 to 29 (14.1% compared to 6.7%)
  • A larger percentage of persons aged 30 to 34 (13.9% compared to 7.5%)
  • A larger percentage of persons aged 20 to 24 (11.8% compared to 6.3%)
  • A smaller percentage of persons aged 10 to 14 (1.7% compared to 6.5%)

Emerging groups

From 1991 to 2021, City of Perth's population increased by 21,321 people (193.7%). This represents an average annual population change of 3.66% per year over the period.

The largest changes in age structure in this area between 1991 and 2021 were in the age groups:

  • 30 to 34 (+3,518 persons)
  • 25 to 29 (+3,401 persons)
  • 35 to 39 (+2,472 persons)
  • 20 to 24 (+2,115 persons)

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