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LEARN MORE ABOUT .idIn 2021, the largest age group in Blacktown City was 35 to 39 year olds. The group that changed the most since 1991 was 35 to 39 year olds, increasing by 9,670 people.
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 also an indicator of Blacktown City'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 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 - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| Blacktown City - Total males (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Greater Sydney % | Number | % | Greater Sydney % | 1991 to 2021 |
| 0 to 4 | 15,341 | 7.8 | 6.2 | 10,142 | 9.6 | 7.5 | +5,199 |
| 5 to 9 | 15,988 | 8.1 | 6.5 | 9,882 | 9.3 | 7.2 | +6,106 |
| 10 to 14 | 14,822 | 7.5 | 6.4 | 9,504 | 9.0 | 7.3 | +5,318 |
| 15 to 19 | 12,622 | 6.4 | 5.9 | 9,640 | 9.1 | 8.0 | +2,982 |
| 20 to 24 | 13,787 | 7.0 | 6.8 | 9,240 | 8.7 | 8.4 | +4,547 |
| 25 to 29 | 13,971 | 7.1 | 7.6 | 8,863 | 8.4 | 8.5 | +5,108 |
| 30 to 34 | 14,694 | 7.4 | 7.9 | 8,688 | 8.2 | 8.5 | +6,006 |
| 35 to 39 | 17,808 | 9.0 | 7.9 | 8,138 | 7.7 | 7.7 | +9,670 |
| 40 to 44 | 15,938 | 8.1 | 7.0 | 8,243 | 7.8 | 7.7 | +7,695 |
| 45 to 49 | 12,916 | 6.5 | 6.6 | 6,262 | 5.9 | 6.3 | +6,654 |
| 50 to 54 | 10,945 | 5.5 | 6.1 | 4,860 | 4.6 | 5.1 | +6,085 |
| 55 to 59 | 10,014 | 5.1 | 5.8 | 3,848 | 3.6 | 4.2 | +6,166 |
| 60 to 64 | 8,567 | 4.3 | 5.1 | 3,353 | 3.2 | 4.1 | +5,214 |
| 65 to 69 | 6,996 | 3.5 | 4.3 | 2,402 | 2.3 | 3.5 | +4,594 |
| 70 to 74 | 5,744 | 2.9 | 3.8 | 1,380 | 1.3 | 2.6 | +4,364 |
| 75 to 79 | 3,616 | 1.8 | 2.7 | 890 | 0.8 | 1.8 | +2,726 |
| 80 to 84 | 2,186 | 1.1 | 1.8 | 348 | 0.3 | 0.9 | +1,838 |
| 85 and over | 1,574 | 0.8 | 1.6 | 173 | 0.2 | 0.5 | +1,401 |
| Total population | 197,529 | 100.0 | 100.0 | 105,856 | 100.0 | 100.0 | +91,673 |
Dominant groups
Analysis of the male five year age groups of Blacktown City in 2021 compared to Greater Sydney shows that there was a higher proportion of males in the younger age groups (under 15) and a lower proportion of males in the older age groups (65+).
Overall, 23.4% of the male population was aged between 0 and 15, and 10.2% were aged 65 years and over, compared with 19.2% and 14.1% respectively for Greater Sydney.
The major differences between the male age structure of Blacktown City and Greater Sydney were:
- A larger percentage of males aged 5 to 9 (8.1% compared to 6.5%)
- A larger percentage of males aged 0 to 4 (7.8% compared to 6.2%)
- A larger percentage of males aged 35 to 39 (9.0% compared to 7.9%)
- A larger percentage of males aged 10 to 14 (7.5% compared to 6.4%)
Emerging groups
From 1991 to 2021, Blacktown City's male population increased by 91,673 people (86.6%). This represents an average annual population change of 2.1% per year over the period.
The largest changes in male age structure in this area between 1991 and 2021 were in the age groups:
- 35 to 39 (+9,670 males)
- 40 to 44 (+7,695 males)
- 45 to 49 (+6,654 males)
- 55 to 59 (+6,166 males)
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