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LEARN MORE ABOUT .idIn 2021, the largest age group in Western Australia was 35 to 39 year olds. The group that changed the most since 1996 was 60 to 64 year olds, increasing by 46,506 people.
The Age Structure of Western Australia provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Western Australia'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 Western Australia'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 | |||||||
|---|---|---|---|---|---|---|---|
| Western Australia - Total females (Enumerated) | 2021 | 1996 | Change | ||||
| Five year age groups (years) | Number | % | Regional Australia % | Number | % | Regional Australia % | 1996 to 2021 |
| 0 to 4 | 78,544 | 5.9 | 5.2 | 60,033 | 7.0 | 7.3 | +18,511 |
| 5 to 9 | 84,295 | 6.3 | 5.8 | 63,450 | 7.4 | 7.6 | +20,845 |
| 10 to 14 | 83,406 | 6.2 | 6.1 | 64,078 | 7.5 | 7.6 | +19,328 |
| 15 to 19 | 74,526 | 5.6 | 5.5 | 61,208 | 7.1 | 6.5 | +13,318 |
| 20 to 24 | 77,610 | 5.8 | 5.2 | 63,628 | 7.4 | 6.3 | +13,982 |
| 25 to 29 | 88,009 | 6.6 | 5.9 | 65,785 | 7.7 | 6.8 | +22,224 |
| 30 to 34 | 100,461 | 7.5 | 6.2 | 68,263 | 8.0 | 7.5 | +32,198 |
| 35 to 39 | 101,511 | 7.6 | 6.2 | 70,196 | 8.2 | 7.9 | +31,315 |
| 40 to 44 | 89,519 | 6.7 | 5.8 | 66,663 | 7.8 | 7.2 | +22,856 |
| 45 to 49 | 87,629 | 6.5 | 6.3 | 60,640 | 7.1 | 6.7 | +26,989 |
| 50 to 54 | 87,047 | 6.5 | 6.5 | 44,452 | 5.2 | 5.4 | +42,595 |
| 55 to 59 | 82,236 | 6.1 | 6.8 | 36,580 | 4.3 | 4.7 | +45,656 |
| 60 to 64 | 77,478 | 5.8 | 6.9 | 30,972 | 3.6 | 4.3 | +46,506 |
| 65 to 69 | 69,035 | 5.2 | 6.3 | 29,431 | 3.4 | 4.3 | +39,604 |
| 70 to 74 | 59,106 | 4.4 | 5.7 | 25,611 | 3.0 | 3.8 | +33,495 |
| 75 to 79 | 40,307 | 3.0 | 4.0 | 18,976 | 2.2 | 2.8 | +21,331 |
| 80 to 84 | 28,821 | 2.2 | 2.7 | 14,641 | 1.7 | 2.0 | +14,180 |
| 85 and over | 30,451 | 2.3 | 2.9 | 11,934 | 1.4 | 1.5 | +18,517 |
| Total population | 1,339,991 | 100.0 | 100.0 | 856,541 | 100.0 | 100.0 | +483,450 |
Dominant groups
Analysis of the female five year age groups of Western Australia in 2021 compared to Regional Australia shows that there was a higher proportion of females in the younger age groups (under 15) and a lower proportion of females in the older age groups (65+).
Overall, 18.4% of the female population was aged between 0 and 15, and 17.0% were aged 65 years and over, compared with 17.1% and 21.6% respectively for Regional Australia.
The major differences between the female age structure of Western Australia and Regional Australia were:
- A larger percentage of females aged 35 to 39 (7.6% compared to 6.2%)
- A larger percentage of females aged 30 to 34 (7.5% compared to 6.2%)
- A smaller percentage of females aged 70 to 74 (4.4% compared to 5.7%)
- A smaller percentage of females aged 65 to 69 (5.2% compared to 6.3%)
Emerging groups
From 1996 to 2021, Western Australia's female population increased by 483,450 people (56.4%). This represents an average annual population change of 1.81% per year over the period.
The largest changes in female age structure in this area between 1996 and 2021 were in the age groups:
- 60 to 64 (+46,506 females)
- 55 to 59 (+45,656 females)
- 50 to 54 (+42,595 females)
- 65 to 69 (+39,604 females)
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