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LEARN MORE ABOUT .idIn 2021, the largest age group in Greater Perth was 35 to 39 year olds. The group that changed the most since 2011 was 35 to 39 year olds, increasing by 39,565 people.
The Age Structure of Greater 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 Greater 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 Greater 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 | |||||||
|---|---|---|---|---|---|---|---|
| Greater Perth - Total persons (Usual residence) | 2021 | 2011 | Change | ||||
| Five year age groups (years) | Number | % | Australian Capital Territory % | Number | % | Australian Capital Territory % | 2011 to 2021 |
| 0 to 4 | 129,598 | 6.1 | 5.9 | 114,783 | 6.6 | 6.7 | +14,815 |
| 5 to 9 | 136,414 | 6.4 | 6.4 | 107,233 | 6.2 | 6.0 | +29,181 |
| 10 to 14 | 135,222 | 6.4 | 6.0 | 110,383 | 6.4 | 5.9 | +24,839 |
| 15 to 19 | 123,315 | 5.8 | 5.8 | 117,706 | 6.8 | 6.7 | +5,609 |
| 20 to 24 | 132,631 | 6.3 | 7.5 | 129,148 | 7.5 | 8.6 | +3,483 |
| 25 to 29 | 143,850 | 6.8 | 8.6 | 132,374 | 7.7 | 8.6 | +11,476 |
| 30 to 34 | 160,051 | 7.6 | 8.5 | 121,378 | 7.0 | 7.7 | +38,673 |
| 35 to 39 | 163,435 | 7.7 | 8.2 | 123,870 | 7.2 | 7.6 | +39,565 |
| 40 to 44 | 143,484 | 6.8 | 7.1 | 127,566 | 7.4 | 7.3 | +15,918 |
| 45 to 49 | 138,515 | 6.5 | 6.4 | 121,958 | 7.1 | 6.9 | +16,557 |
| 50 to 54 | 136,051 | 6.4 | 5.9 | 113,114 | 6.5 | 6.5 | +22,937 |
| 55 to 59 | 125,717 | 5.9 | 5.3 | 101,103 | 5.8 | 5.7 | +24,614 |
| 60 to 64 | 114,471 | 5.4 | 4.7 | 92,047 | 5.3 | 5.1 | +22,424 |
| 65 to 69 | 101,124 | 4.8 | 4.1 | 66,159 | 3.8 | 3.6 | +34,965 |
| 70 to 74 | 88,828 | 4.2 | 3.8 | 51,434 | 3.0 | 2.5 | +37,394 |
| 75 to 79 | 60,857 | 2.9 | 2.6 | 39,522 | 2.3 | 1.8 | +21,335 |
| 80 to 84 | 42,242 | 2.0 | 1.7 | 30,808 | 1.8 | 1.4 | +11,434 |
| 85 and over | 40,831 | 1.9 | 1.6 | 28,301 | 1.6 | 1.4 | +12,530 |
| Total population | 2,116,636 | 100.0 | 100.0 | 1,728,887 | 100.0 | 100.0 | +387,749 |
Dominant groups
Analysis of the five year age groups of Greater Perth in 2021 compared to Australian Capital Territory shows that there was a higher proportion of people in the younger age groups (under 15) as well as a higher proportion of people in the older age groups (65+).
Overall, 19.0% of the population was aged between 0 and 15, and 15.8% were aged 65 years and over, compared with 18.3% and 13.7% respectively for Australian Capital Territory.
The major differences between the age structure of Greater Perth and Australian Capital Territory were:
- A larger percentage of persons aged 65 to 69 (4.8% compared to 4.1%)
- A smaller percentage of persons aged 25 to 29 (6.8% compared to 8.6%)
- A smaller percentage of persons aged 20 to 24 (6.3% compared to 7.5%)
- A smaller percentage of persons aged 30 to 34 (7.6% compared to 8.5%)
Emerging groups
From 2011 to 2021, Greater Perth's population increased by 387,749 people (22.4%). This represents an average annual population change of 2.04% per year over the period.
The largest changes in age structure in this area between 2011 and 2021 were in the age groups:
- 35 to 39 (+39,565 persons)
- 30 to 34 (+38,673 persons)
- 70 to 74 (+37,394 persons)
- 65 to 69 (+34,965 persons)
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