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LEARN MORE ABOUT .idIn 2021, the largest age group in Blacktown was 25 to 29 year olds. The group that changed the most since 2011 was 35 to 39 year olds, increasing by 1,248 people.
The Age Structure of Blacktown provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Blacktown'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 Blacktown'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 | |||||||
|---|---|---|---|---|---|---|---|
| Blacktown - Total persons (Enumerated) | 2021 | 2011 | Change | ||||
| Five year age groups (years) | Number | % | Blacktown City % | Number | % | Blacktown City % | 2011 to 2021 |
| 0 to 4 | 3,650 | 7.1 | 7.5 | 3,637 | 8.4 | 8.5 | +13 |
| 5 to 9 | 3,252 | 6.4 | 7.9 | 2,945 | 6.8 | 7.7 | +306 |
| 10 to 14 | 2,923 | 5.7 | 7.3 | 2,714 | 6.2 | 7.6 | +209 |
| 15 to 19 | 2,594 | 5.1 | 6.1 | 2,691 | 6.2 | 7.2 | -98 |
| 20 to 24 | 4,037 | 7.9 | 6.6 | 3,044 | 7.0 | 6.8 | +993 |
| 25 to 29 | 4,776 | 9.3 | 7.0 | 3,984 | 9.2 | 7.5 | +792 |
| 30 to 34 | 4,553 | 8.9 | 7.9 | 3,756 | 8.6 | 8.0 | +797 |
| 35 to 39 | 4,519 | 8.8 | 9.2 | 3,271 | 7.5 | 7.8 | +1,248 |
| 40 to 44 | 3,554 | 7.0 | 7.8 | 2,844 | 6.5 | 7.1 | +710 |
| 45 to 49 | 2,899 | 5.7 | 6.4 | 2,803 | 6.4 | 6.8 | +96 |
| 50 to 54 | 2,709 | 5.3 | 5.6 | 2,577 | 5.9 | 6.1 | +132 |
| 55 to 59 | 2,685 | 5.3 | 5.1 | 2,126 | 4.9 | 5.3 | +558 |
| 60 to 64 | 2,285 | 4.5 | 4.5 | 1,823 | 4.2 | 4.5 | +462 |
| 65 to 69 | 1,937 | 3.8 | 3.7 | 1,539 | 3.5 | 3.1 | +398 |
| 70 to 74 | 1,586 | 3.1 | 3.1 | 1,300 | 3.0 | 2.2 | +286 |
| 75 to 79 | 1,182 | 2.3 | 1.9 | 1,051 | 2.4 | 1.6 | +131 |
| 80 to 84 | 945 | 1.8 | 1.2 | 810 | 1.9 | 1.1 | +135 |
| 85 and over | 1,007 | 2.0 | 1.1 | 609 | 1.4 | 0.9 | +397 |
| Total population | 51,093 | 100.0 | 100.0 | 43,530 | 100.0 | 100.0 | +7,562 |
Dominant groups
Analysis of the five year age groups of Blacktown in 2021 compared to Blacktown City shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 19.2% of the population was aged between 0 and 15, and 13.0% were aged 65 years and over, compared with 22.7% and 11.1% respectively for Blacktown City.
The major differences between the age structure of Blacktown and Blacktown City were:
- A larger percentage of persons aged 25 to 29 (9.3% compared to 7.0%)
- A larger percentage of persons aged 20 to 24 (7.9% compared to 6.6%)
- A smaller percentage of persons aged 5 to 9 (6.4% compared to 7.9%)
- A smaller percentage of persons aged 10 to 14 (5.7% compared to 7.3%)
Emerging groups
From 2011 to 2021, Blacktown's population increased by 7,563 people (17.4%). This represents an average annual population change of 1.61% 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 (+1,248 persons)
- 20 to 24 (+993 persons)
- 30 to 34 (+797 persons)
- 25 to 29 (+792 persons)
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