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LEARN MORE ABOUT .idIn 2021, the largest age group in the Keilor District was 70 to 74 year olds. The group that changed the most since 1991 was 70 to 74 year olds, increasing by 280 people.
The Age Structure of the Keilor District 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 Keilor District'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 Keilor District'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 | |||||||
|---|---|---|---|---|---|---|---|
| Keilor District - Total females (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Derrimut % | Number | % | Derrimut % | 1991 to 2021 |
| 0 to 4 | 169 | 3.9 | 8.0 | 253 | 5.8 | 6.2 | -84 |
| 5 to 9 | 209 | 4.8 | 10.6 | 304 | 7.0 | 9.9 | -96 |
| 10 to 14 | 250 | 5.8 | 9.3 | 445 | 10.3 | 6.2 | -196 |
| 15 to 19 | 255 | 5.9 | 6.5 | 498 | 11.5 | 13.8 | -244 |
| 20 to 24 | 212 | 4.9 | 5.1 | 340 | 7.8 | 8.4 | -128 |
| 25 to 29 | 190 | 4.4 | 5.9 | 242 | 5.6 | 6.7 | -53 |
| 30 to 34 | 226 | 5.2 | 7.3 | 271 | 6.2 | 9.6 | -45 |
| 35 to 39 | 241 | 5.6 | 12.1 | 392 | 9.0 | 5.9 | -151 |
| 40 to 44 | 259 | 6.0 | 10.0 | 522 | 12.0 | 11.1 | -263 |
| 45 to 49 | 306 | 7.1 | 7.6 | 380 | 8.8 | 7.9 | -74 |
| 50 to 54 | 295 | 6.8 | 5.2 | 211 | 4.9 | 7.1 | +83 |
| 55 to 59 | 277 | 6.4 | 3.6 | 146 | 3.4 | 3.4 | +131 |
| 60 to 64 | 290 | 6.7 | 3.3 | 121 | 2.8 | 2.5 | +169 |
| 65 to 69 | 253 | 5.9 | 2.6 | 88 | 2.0 | 0.7 | +165 |
| 70 to 74 | 336 | 7.8 | 1.2 | 55 | 1.3 | 0.7 | +280 |
| 75 to 79 | 230 | 5.3 | 1.0 | 36 | 0.8 | -- | +193 |
| 80 to 84 | 139 | 3.2 | 0.4 | 17 | 0.4 | -- | +121 |
| 85 and over | 178 | 4.1 | 0.2 | 15 | 0.4 | -- | +162 |
| Total population | 4,315 | 100.0 | 100.0 | 4,344 | 100.0 | 100.0 | -29 |
Dominant groups
Analysis of the female five year age groups of the Keilor District in 2021 compared to Derrimut shows that there was a lower proportion of females in the younger age groups (under 15) and a higher proportion of females in the older age groups (65+).
Overall, 14.6% of the female population was aged between 0 and 15, and 26.3% were aged 65 years and over, compared with 27.9% and 5.5% respectively for Derrimut.
The major differences between the female age structure of the Keilor District and Derrimut were:
- A larger percentage of females aged 70 to 74 (7.8% compared to 1.2%)
- A larger percentage of females aged 75 to 79 (5.3% compared to 1.0%)
- A smaller percentage of females aged 35 to 39 (5.6% compared to 12.1%)
- A smaller percentage of females aged 5 to 9 (4.8% compared to 10.6%)
Emerging groups
From 1991 to 2021, Keilor District's female population decreased by 29 people (0.7%). This represents an average annual population change of -0.02% per year over the period.
The largest changes in female age structure in this area between 1991 and 2021 were in the age groups:
- 70 to 74 (+280 females)
- 40 to 44 (-263 females)
- 15 to 19 (-244 females)
- 10 to 14 (-196 females)
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