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LEARN MORE ABOUT .idIn 2021, Blacktown City had lower proportion of children (under 18) and a similar proportion of persons aged 60 or older than the Shire of Serpentine-Jarrahdale .
The Age Structure of Blacktown City provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Blacktown City '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 Blacktown City '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 | |||||||
|---|---|---|---|---|---|---|---|
| Blacktown City - Total persons (Usual residence) | 2021 | 2006 | Change | ||||
| Service age group (years) | Number | % | Shire of Serpentine-Jarrahdale % | Number | % | Shire of Serpentine-Jarrahdale % | 2006 to 2021 |
| Babies and pre-schoolers (0 to 4) | 29,907 | 7.5 | 8.6 | 22,412 | 8.2 | 6.2 | +7,495 |
| Primary schoolers (5 to 11) | 43,414 | 10.9 | 11.7 | 31,626 | 11.6 | 11.6 | +11,788 |
| Secondary schoolers (12 to 17) | 31,678 | 8.0 | 8.3 | 25,129 | 9.2 | 10.7 | +6,549 |
| Tertiary education and independence (18 to 24) | 35,928 | 9.1 | 7.7 | 27,323 | 10.1 | 7.1 | +8,605 |
| Young workforce (25 to 34) | 59,261 | 14.9 | 15.2 | 41,591 | 15.3 | 10.2 | +17,670 |
| Parents and homebuilders (35 to 49) | 92,789 | 23.4 | 21.0 | 59,928 | 22.1 | 25.8 | +32,861 |
| Older workers and pre-retirees (50 to 59) | 42,319 | 10.7 | 12.3 | 31,163 | 11.5 | 14.7 | +11,156 |
| Empty nesters and retirees (60 to 69) | 32,504 | 8.2 | 8.3 | 17,587 | 6.5 | 8.5 | +14,917 |
| Seniors (70 to 84) | 24,674 | 6.2 | 6.0 | 13,010 | 4.8 | 4.5 | +11,664 |
| Elderly aged (85 and over) | 4,304 | 1.1 | 0.8 | 1,918 | 0.7 | 0.7 | +2,386 |
| Total | 396,778 | 100.0 | 100.0 | 271,687 | 100.0 | 100.0 | +125,091 |
Dominant groups
Analysis of the service age groups of Blacktown City 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) and a similar proportion of people in the older age groups (60+ years).
Overall, 26.5% of the population was aged between 0 and 17, and 15.5% were aged 60 years and over, compared with 28.7% and 15.0% respectively for the Shire of Serpentine-Jarrahdale .
The major differences between the age structure of Blacktown City and the Shire of Serpentine-Jarrahdale were:
- A larger percentage of 'Parents and homebuilders' (23.4% compared to 21.0%)
- A larger percentage of 'Tertiary education & independence' (9.1% compared to 7.7%)
- A smaller percentage of 'Older workers & pre-retirees' (10.7% compared to 12.3%)
- A smaller percentage of 'Babies and pre-schoolers' (7.5% compared to 8.6%)
Emerging groups
From 2006 to 2021, Blacktown City 's population increased by 125,091 people (46.0%). This represents an average annual population change of 2.56% per year over the period.
The largest changes in the age structure in this area between 2006 and 2021 were in the age groups:
- Parents and homebuilders (35 to 49) (+32,861 people)
- Young workforce (25 to 34) (+17,670 people)
- Empty nesters and retirees (60 to 69) (+14,917 people)
- Primary schoolers (5 to 11) (+11,788 people)
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