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LEARN MORE ABOUT .idIn 2021, the largest age group in Eastern Region Alliance area was 35 to 39 year olds. The group that changed the most since 2016 was 70 to 74 year olds, increasing by 1,246 people.
The Age Structure of Eastern Region Alliance area provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Eastern Region Alliance area'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 Eastern Region Alliance area'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 | |||||||
|---|---|---|---|---|---|---|---|
| Eastern Region Alliance area - Total females (Usual residence) | 2021 | 2016 | Change | ||||
| Five year age groups (years) | Number | % | City of Unley % | Number | % | City of Unley % | 2016 to 2021 |
| 0 to 4 | 4,544 | 4.2 | 4.0 | 4,603 | 4.5 | 4.2 | -59 |
| 5 to 9 | 5,533 | 5.2 | 4.8 | 5,369 | 5.3 | 5.3 | +164 |
| 10 to 14 | 6,028 | 5.6 | 5.5 | 5,232 | 5.2 | 5.3 | +796 |
| 15 to 19 | 5,731 | 5.3 | 5.3 | 5,876 | 5.8 | 5.6 | -145 |
| 20 to 24 | 6,444 | 6.0 | 6.1 | 6,488 | 6.4 | 6.8 | -44 |
| 25 to 29 | 6,649 | 6.2 | 6.0 | 6,328 | 6.2 | 6.7 | +321 |
| 30 to 34 | 6,848 | 6.4 | 6.0 | 6,276 | 6.2 | 6.4 | +572 |
| 35 to 39 | 7,154 | 6.7 | 6.5 | 6,289 | 6.2 | 6.3 | +865 |
| 40 to 44 | 6,935 | 6.5 | 6.6 | 6,546 | 6.5 | 6.7 | +389 |
| 45 to 49 | 6,813 | 6.3 | 6.5 | 7,017 | 6.9 | 6.5 | -204 |
| 50 to 54 | 6,899 | 6.4 | 6.3 | 6,603 | 6.5 | 6.2 | +296 |
| 55 to 59 | 6,569 | 6.1 | 6.0 | 6,649 | 6.6 | 6.4 | -80 |
| 60 to 64 | 6,563 | 6.1 | 6.3 | 5,975 | 5.9 | 6.3 | +588 |
| 65 to 69 | 5,974 | 5.6 | 6.0 | 5,857 | 5.8 | 5.7 | +117 |
| 70 to 74 | 5,924 | 5.5 | 5.7 | 4,678 | 4.6 | 4.0 | +1,246 |
| 75 to 79 | 4,582 | 4.3 | 4.0 | 3,864 | 3.8 | 3.3 | +718 |
| 80 to 84 | 3,615 | 3.4 | 3.3 | 3,152 | 3.1 | 2.6 | +463 |
| 85 and over | 4,627 | 4.3 | 5.1 | 4,612 | 4.5 | 5.7 | +15 |
| Total population | 107,432 | 100.0 | 100.0 | 101,414 | 100.0 | 100.0 | +6,018 |
Dominant groups
Analysis of the female five year age groups of Eastern Region Alliance area in 2021 compared to the City of Unley 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, 15.0% of the female population was aged between 0 and 15, and 23.0% were aged 65 years and over, compared with 14.3% and 24.1% respectively for the City of Unley.
The major difference between the female age structure of Eastern Region Alliance area and the City of Unley is:
- A smaller percentage of females aged 85 and over (4.3% compared to 5.1%)
Emerging groups
From 2016 to 2021, Eastern Region Alliance area's female population increased by 6,018 people (5.9%). This represents an average annual population change of 1.16% per year over the period.
The largest changes in female age structure in this area between 2016 and 2021 were in the age groups:
- 70 to 74 (+1,246 females)
- 35 to 39 (+865 females)
- 10 to 14 (+796 females)
- 75 to 79 (+718 females)
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