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LEARN MORE ABOUT .idIn 2021, the largest age group in Sydenham - Hillside was 25 to 29 year olds. The group that changed the most since 1991 was 20 to 24 year olds, increasing by 871 people.
The Age Structure of Sydenham - Hillside provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Sydenham - Hillside'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 Sydenham - Hillside'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 | |||||||
|---|---|---|---|---|---|---|---|
| Sydenham - Hillside - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | City of Brimbank % | Number | % | City of Brimbank % | 1991 to 2021 |
| 0 to 4 | 646 | 5.5 | 5.7 | 148 | 13.7 | 8.0 | +498 |
| 5 to 9 | 648 | 5.5 | 6.0 | 135 | 12.5 | 8.3 | +513 |
| 10 to 14 | 671 | 5.7 | 5.7 | 97 | 9.0 | 9.0 | +574 |
| 15 to 19 | 742 | 6.3 | 5.7 | 54 | 5.0 | 9.1 | +688 |
| 20 to 24 | 944 | 8.1 | 6.9 | 73 | 6.8 | 8.7 | +871 |
| 25 to 29 | 948 | 8.1 | 8.1 | 121 | 11.2 | 8.0 | +827 |
| 30 to 34 | 917 | 7.8 | 7.6 | 152 | 14.1 | 8.2 | +765 |
| 35 to 39 | 817 | 7.0 | 7.2 | 104 | 9.6 | 8.2 | +713 |
| 40 to 44 | 699 | 6.0 | 6.4 | 88 | 8.1 | 8.3 | +611 |
| 45 to 49 | 812 | 6.9 | 6.3 | 49 | 4.5 | 6.1 | +763 |
| 50 to 54 | 821 | 7.0 | 6.3 | 15 | 1.4 | 4.8 | +806 |
| 55 to 59 | 823 | 7.0 | 6.1 | 9 | 0.8 | 3.8 | +814 |
| 60 to 64 | 624 | 5.3 | 5.8 | 6 | 0.6 | 3.2 | +618 |
| 65 to 69 | 469 | 4.0 | 5.0 | 15 | 1.4 | 2.7 | +454 |
| 70 to 74 | 367 | 3.1 | 4.3 | 11 | 1.0 | 1.6 | +356 |
| 75 to 79 | 262 | 2.2 | 3.0 | 3 | 0.3 | 1.0 | +259 |
| 80 to 84 | 199 | 1.7 | 2.0 | 0 | -- | 0.5 | +199 |
| 85 and over | 308 | 2.6 | 1.9 | 0 | -- | 0.3 | +308 |
| Total population | 11,717 | 100.0 | 100.0 | 1,080 | 100.0 | 100.0 | +10,637 |
Dominant groups
Analysis of the five year age groups of Sydenham - Hillside in 2021 compared to the City of Brimbank shows that there was a lower proportion of people in the younger age groups (under 15) as well as a lower proportion of people in the older age groups (65+).
Overall, 16.8% of the population was aged between 0 and 15, and 13.7% were aged 65 years and over, compared with 17.4% and 16.2% respectively for the City of Brimbank.
The major differences between the age structure of Sydenham - Hillside and the City of Brimbank were:
- A larger percentage of persons aged 20 to 24 (8.1% compared to 6.9%)
- A larger percentage of persons aged 55 to 59 (7.0% compared to 6.1%)
- A smaller percentage of persons aged 70 to 74 (3.1% compared to 4.3%)
- A smaller percentage of persons aged 65 to 69 (4.0% compared to 5.0%)
Emerging groups
From 1991 to 2021, Sydenham - Hillside's population increased by 10,637 people (984.9%). This represents an average annual population change of 8.27% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 20 to 24 (+871 persons)
- 25 to 29 (+827 persons)
- 55 to 59 (+814 persons)
- 50 to 54 (+806 persons)
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