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City of UnleyCommunity profile

Eastern Region Alliance area

Five year age groups

In 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 2,269 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 (Usual residence)20212016Change
Five year age groups (years)Number%City of Unley %Number%City of Unley %2016 to 2021
0 to 49,3294.54.39,5874.94.7-258
5 to 911,5715.65.310,9095.65.7+662
10 to 1412,1505.95.910,8275.55.5+1,323
15 to 1911,8095.75.411,8786.15.8-69
20 to 2413,0826.36.213,1706.76.8-88
25 to 2913,4626.56.312,6966.57.0+766
30 to 3413,2666.46.112,2466.36.6+1,020
35 to 3913,8336.76.412,1486.26.4+1,685
40 to 4413,4226.56.612,7506.56.7+672
45 to 4913,3226.46.613,5576.96.7-235
50 to 5413,3626.46.612,9386.66.4+424
55 to 5912,6876.16.012,4916.46.3+196
60 to 6412,3045.96.111,3025.86.2+1,002
65 to 6911,2145.45.810,7495.55.6+465
70 to 7410,7015.25.58,4324.33.9+2,269
75 to 798,2104.03.97,0323.63.0+1,178
80 to 846,2683.02.95,4072.82.3+861
85 and over7,3003.54.17,0763.64.3+224
Total population207,292100.0100.0195,195100.0100.0+12,097
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

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, 15.9% of the population was aged between 0 and 15, and 21.1% were aged 65 years and over, compared with 15.5% and 22.2% 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 2016 to 2021, Eastern Region Alliance area's population increased by 12,097 people (6.2%). This represents an average annual population change of 1.21% per year over the period.

The largest changes in age structure in this area between 2016 and 2021 were in the age groups:

  • 70 to 74 (+2,269 persons)
  • 35 to 39 (+1,685 persons)
  • 10 to 14 (+1,323 persons)
  • 75 to 79 (+1,178 persons)

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