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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 1996 was 60 to 64 year olds, increasing by 4,951 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 persons (Enumerated) | 2021 | 1996 | Change | ||||
| Five year age groups (years) | Number | % | City of Unley % | Number | % | City of Unley % | 1996 to 2021 |
| 0 to 4 | 9,347 | 4.6 | 4.4 | 9,051 | 5.2 | 5.2 | +296 |
| 5 to 9 | 11,573 | 5.6 | 5.4 | 9,500 | 5.4 | 5.4 | +2,073 |
| 10 to 14 | 12,144 | 5.9 | 5.9 | 9,580 | 5.5 | 5.0 | +2,564 |
| 15 to 19 | 11,925 | 5.8 | 5.5 | 11,829 | 6.8 | 6.4 | +96 |
| 20 to 24 | 12,961 | 6.3 | 6.1 | 14,855 | 8.5 | 9.4 | -1,894 |
| 25 to 29 | 13,328 | 6.5 | 6.3 | 13,769 | 7.9 | 8.5 | -441 |
| 30 to 34 | 13,167 | 6.4 | 6.1 | 12,899 | 7.4 | 8.1 | +268 |
| 35 to 39 | 13,711 | 6.7 | 6.4 | 12,996 | 7.4 | 8.1 | +715 |
| 40 to 44 | 13,334 | 6.5 | 6.6 | 12,488 | 7.1 | 8.0 | +846 |
| 45 to 49 | 13,240 | 6.4 | 6.6 | 12,469 | 7.1 | 7.4 | +771 |
| 50 to 54 | 13,193 | 6.4 | 6.5 | 9,827 | 5.6 | 5.1 | +3,366 |
| 55 to 59 | 12,490 | 6.1 | 5.9 | 8,364 | 4.8 | 3.8 | +4,126 |
| 60 to 64 | 12,086 | 5.9 | 6.0 | 7,135 | 4.1 | 3.1 | +4,951 |
| 65 to 69 | 10,969 | 5.3 | 5.7 | 7,527 | 4.3 | 3.4 | +3,442 |
| 70 to 74 | 10,495 | 5.1 | 5.5 | 7,478 | 4.3 | 3.8 | +3,017 |
| 75 to 79 | 8,068 | 3.9 | 3.8 | 6,107 | 3.5 | 3.4 | +1,961 |
| 80 to 84 | 6,157 | 3.0 | 2.9 | 4,863 | 2.8 | 2.9 | +1,294 |
| 85 and over | 7,194 | 3.5 | 4.1 | 4,442 | 2.5 | 3.0 | +2,752 |
| Total population | 205,382 | 100.0 | 100.0 | 175,179 | 100.0 | 100.0 | +30,203 |
Dominant groups
Analysis of the five year age groups of Eastern Region Alliance area in 2021 compared to the City of Unley shows that there was a similar proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).
Overall, 16.1% of the population was aged between 0 and 15, and 20.9% were aged 65 years and over, compared with 15.8% and 22.1% respectively for the City of Unley.
The major difference between the age structure of Eastern Region Alliance area and the City of Unley is:
- A smaller percentage of persons aged 85 and over (3.5% compared to 4.1%)
Emerging groups
From 1996 to 2021, Eastern Region Alliance area's population increased by 30,203 people (17.2%). This represents an average annual population change of 0.64% per year over the period.
The largest changes in age structure in this area between 1996 and 2021 were in the age groups:
- 60 to 64 (+4,951 persons)
- 55 to 59 (+4,126 persons)
- 65 to 69 (+3,442 persons)
- 50 to 54 (+3,366 persons)
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