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LEARN MORE ABOUT .idIn 2021, the largest age group in the City of Brimbank was 30 to 34 year olds. The group that changed the most since 2006 was 65 to 69 year olds, increasing by 2,316 people.
The Age Structure of the City of Brimbank provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the City of Brimbank'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 the City of Brimbank'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 | |||||||
|---|---|---|---|---|---|---|---|
| City of Brimbank - Total females (Usual residence) | 2021 | 2006 | Change | ||||
| Five year age groups (years) | Number | % | Keilor Downs % | Number | % | Keilor Downs % | 2006 to 2021 |
| 0 to 4 | 5,274 | 5.4 | 4.3 | 5,357 | 6.3 | 5.3 | -83 |
| 5 to 9 | 5,666 | 5.8 | 5.1 | 5,631 | 6.6 | 5.2 | +35 |
| 10 to 14 | 5,319 | 5.5 | 4.5 | 5,899 | 7.0 | 6.1 | -580 |
| 15 to 19 | 5,489 | 5.7 | 5.5 | 6,020 | 7.1 | 9.1 | -531 |
| 20 to 24 | 6,349 | 6.5 | 6.0 | 6,180 | 7.3 | 8.3 | +169 |
| 25 to 29 | 7,230 | 7.4 | 5.9 | 5,894 | 7.0 | 5.7 | +1,336 |
| 30 to 34 | 7,374 | 7.6 | 6.3 | 6,394 | 7.5 | 5.4 | +980 |
| 35 to 39 | 7,025 | 7.2 | 6.1 | 6,582 | 7.8 | 7.0 | +443 |
| 40 to 44 | 6,158 | 6.3 | 5.5 | 6,252 | 7.4 | 8.9 | -94 |
| 45 to 49 | 6,322 | 6.5 | 6.0 | 6,246 | 7.4 | 10.2 | +76 |
| 50 to 54 | 6,393 | 6.6 | 6.3 | 5,921 | 7.0 | 8.8 | +472 |
| 55 to 59 | 5,894 | 6.1 | 7.7 | 5,238 | 6.2 | 6.3 | +656 |
| 60 to 64 | 5,815 | 6.0 | 8.5 | 3,578 | 4.2 | 3.8 | +2,237 |
| 65 to 69 | 5,145 | 5.3 | 8.0 | 2,829 | 3.3 | 3.3 | +2,316 |
| 70 to 74 | 4,331 | 4.5 | 5.7 | 2,361 | 2.8 | 2.1 | +1,970 |
| 75 to 79 | 2,992 | 3.1 | 3.5 | 1,974 | 2.3 | 2.2 | +1,018 |
| 80 to 84 | 2,078 | 2.1 | 2.7 | 1,454 | 1.7 | 0.9 | +624 |
| 85 and over | 2,271 | 2.3 | 2.5 | 947 | 1.1 | 1.3 | +1,324 |
| Total population | 97,125 | 100.0 | 100.0 | 84,757 | 100.0 | 100.0 | +12,368 |
Dominant groups
Analysis of the female five year age groups of the City of Brimbank in 2021 compared to Keilor Downs 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, 16.7% of the female population was aged between 0 and 15, and 17.3% were aged 65 years and over, compared with 13.9% and 22.4% respectively for Keilor Downs.
The major differences between the female age structure of the City of Brimbank and Keilor Downs were:
- A larger percentage of females aged 25 to 29 (7.4% compared to 5.9%)
- A smaller percentage of females aged 65 to 69 (5.3% compared to 8.0%)
- A smaller percentage of females aged 60 to 64 (6.0% compared to 8.5%)
- A smaller percentage of females aged 55 to 59 (6.1% compared to 7.7%)
Emerging groups
From 2006 to 2021, City of Brimbank's female population increased by 12,368 people (14.6%). This represents an average annual population change of 0.91% per year over the period.
The largest changes in female age structure in this area between 2006 and 2021 were in the age groups:
- 65 to 69 (+2,316 females)
- 60 to 64 (+2,237 females)
- 70 to 74 (+1,970 females)
- 25 to 29 (+1,336 females)
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