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LEARN MORE ABOUT .idIn 2021, the largest age group in Blacktown was 30 to 34 year olds. The group that changed the most since 2016 was 35 to 39 year olds, increasing by 345 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 females (Usual residence) | 2021 | 2016 | Change | ||||
| Five year age groups (years) | Number | % | Seven Hills % | Number | % | Seven Hills % | 2016 to 2021 |
| 0 to 4 | 1,780 | 7.1 | 6.1 | 1,862 | 8.0 | 6.5 | -82 |
| 5 to 9 | 1,572 | 6.2 | 6.3 | 1,563 | 6.7 | 6.2 | +9 |
| 10 to 14 | 1,411 | 5.6 | 5.7 | 1,288 | 5.5 | 5.6 | +123 |
| 15 to 19 | 1,245 | 4.9 | 5.2 | 1,352 | 5.8 | 5.9 | -107 |
| 20 to 24 | 1,869 | 7.4 | 6.4 | 1,562 | 6.7 | 6.1 | +307 |
| 25 to 29 | 2,319 | 9.2 | 7.2 | 2,102 | 9.0 | 7.1 | +217 |
| 30 to 34 | 2,330 | 9.2 | 8.1 | 2,292 | 9.8 | 7.9 | +38 |
| 35 to 39 | 2,166 | 8.6 | 8.1 | 1,821 | 7.8 | 7.4 | +345 |
| 40 to 44 | 1,686 | 6.7 | 7.0 | 1,462 | 6.2 | 7.0 | +224 |
| 45 to 49 | 1,455 | 5.8 | 5.9 | 1,332 | 5.7 | 6.9 | +123 |
| 50 to 54 | 1,360 | 5.4 | 6.1 | 1,335 | 5.7 | 6.0 | +25 |
| 55 to 59 | 1,298 | 5.2 | 5.5 | 1,239 | 5.3 | 5.9 | +59 |
| 60 to 64 | 1,152 | 4.6 | 5.6 | 1,043 | 4.5 | 5.7 | +109 |
| 65 to 69 | 980 | 3.9 | 5.1 | 817 | 3.5 | 5.3 | +163 |
| 70 to 74 | 819 | 3.3 | 4.4 | 687 | 2.9 | 4.0 | +132 |
| 75 to 79 | 636 | 2.5 | 3.4 | 629 | 2.7 | 2.5 | +7 |
| 80 to 84 | 523 | 2.1 | 1.9 | 493 | 2.1 | 2.2 | +30 |
| 85 and over | 599 | 2.4 | 2.0 | 532 | 2.3 | 1.9 | +67 |
| Total population | 25,200 | 100.0 | 100.0 | 23,411 | 100.0 | 100.0 | +1,789 |
Dominant groups
Analysis of the female five year age groups of Blacktown in 2021 compared to Seven Hills 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, 18.9% of the female population was aged between 0 and 15, and 14.1% were aged 65 years and over, compared with 18.1% and 16.8% respectively for Seven Hills.
The major differences between the female age structure of Blacktown and Seven Hills were:
- A larger percentage of females aged 25 to 29 (9.2% compared to 7.2%)
- A larger percentage of females aged 30 to 34 (9.2% compared to 8.1%)
- A smaller percentage of females aged 65 to 69 (3.9% compared to 5.1%)
- A smaller percentage of females aged 70 to 74 (3.3% compared to 4.4%)
Emerging groups
From 2016 to 2021, Blacktown's female population increased by 1,789 people (7.6%). This represents an average annual population change of 1.48% per year over the period.
The largest changes in female age structure in this area between 2016 and 2021 were in the age groups:
- 35 to 39 (+345 females)
- 20 to 24 (+307 females)
- 40 to 44 (+224 females)
- 25 to 29 (+217 females)
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