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LEARN MORE ABOUT .idIn 2021, the City of Kwinana had lower proportion of children (under 18) and a lower proportion of persons aged 60 or older than the Shire of Serpentine-Jarrahdale .
The Age Structure of the City of Kwinana provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of the City of Kwinana 's residential role and function and how it is likely to change in the future.
Service age groups divide the population into age categories that reflect typical life-stages. They indicate the level of demand for services that target people at different stages in life and how that demand is changing.
To get a more complete picture the City of Kwinana '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 - Service age groups | |||||||
|---|---|---|---|---|---|---|---|
| City of Kwinana - Total persons (Enumerated) | 2021 | 2011 | Change | ||||
| Service age group (years) | Number | % | Shire of Serpentine-Jarrahdale % | Number | % | Shire of Serpentine-Jarrahdale % | 2011 to 2021 |
| Babies and pre-schoolers (0 to 4) | 3,790 | 8.5 | 9.0 | 2,591 | 9.0 | 7.9 | +1,199 |
| Primary schoolers (5 to 11) | 4,802 | 10.7 | 12.1 | 2,942 | 10.3 | 11.3 | +1,860 |
| Secondary schoolers (12 to 17) | 3,324 | 7.4 | 8.6 | 2,330 | 8.1 | 9.5 | +994 |
| Tertiary education and independence (18 to 24) | 4,007 | 9.0 | 7.7 | 2,862 | 10.0 | 9.1 | +1,145 |
| Young workforce (25 to 34) | 7,507 | 16.8 | 15.0 | 5,060 | 17.7 | 11.5 | +2,447 |
| Parents and homebuilders (35 to 49) | 10,369 | 23.2 | 20.7 | 6,098 | 21.3 | 23.8 | +4,271 |
| Older workers and pre-retirees (50 to 59) | 4,773 | 10.7 | 12.0 | 2,933 | 10.2 | 12.3 | +1,840 |
| Empty nesters and retirees (60 to 69) | 3,300 | 7.4 | 8.2 | 2,044 | 7.1 | 9.2 | +1,256 |
| Seniors (70 to 84) | 2,444 | 5.5 | 6.0 | 1,539 | 5.4 | 4.8 | +905 |
| Elderly aged (85 and over) | 410 | 0.9 | 0.8 | 259 | 0.9 | 0.6 | +151 |
| Total | 44,726 | 100.0 | 100.0 | 28,658 | 100.0 | 100.0 | +16,068 |
Dominant groups
Analysis of the service age groups of the City of Kwinana in 2021 compared to the Shire of Serpentine-Jarrahdale shows that there was a lower proportion of people in the younger age groups (0 to 17 years) as well as a lower proportion of people in the older age groups (60+ years).
Overall, 26.6% of the population was aged between 0 and 17, and 13.8% were aged 60 years and over, compared with 29.6% and 15.0% respectively for the Shire of Serpentine-Jarrahdale .
The major differences between the age structure of the City of Kwinana and the Shire of Serpentine-Jarrahdale were:
- A larger percentage of 'Parents and homebuilders' (23.2% compared to 20.7%)
- A larger percentage of 'Young workforce' (16.8% compared to 15.0%)
- A smaller percentage of 'Primary schoolers' (10.7% compared to 12.1%)
- A smaller percentage of 'Older workers & pre-retirees' (10.7% compared to 12.0%)
Emerging groups
From 2011 to 2021, City of Kwinana 's population increased by 16,068 people (56.1%). This represents an average annual population change of 4.55% per year over the period.
The largest changes in the age structure in this area between 2011 and 2021 were in the age groups:
- Parents and homebuilders (35 to 49) (+4,271 people)
- Young workforce (25 to 34) (+2,447 people)
- Primary schoolers (5 to 11) (+1,860 people)
- Older workers and pre-retirees (50 to 59) (+1,840 people)
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