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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 2011 was 70 to 74 year olds, increasing by 3,338 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)20212011Change
Five year age groups (years)Number%Millswood %Number%Millswood %2011 to 2021
0 to 49,3294.53.89,5095.06.1-180
5 to 911,5715.66.210,1185.46.6+1,453
10 to 1412,1505.97.710,3055.57.2+1,845
15 to 1911,8095.77.111,7526.26.1+57
20 to 2413,0826.36.514,1767.55.5-1,094
25 to 2913,4626.54.212,7926.83.9+670
30 to 3413,2666.43.211,3266.04.1+1,940
35 to 3913,8336.74.312,2076.55.5+1,626
40 to 4413,4226.56.013,4007.17.9+22
45 to 4913,3226.46.713,2757.07.1+47
50 to 5413,3626.48.112,9846.98.8+378
55 to 5912,6876.16.811,7446.27.9+943
60 to 6412,3045.97.811,1255.97.3+1,179
65 to 6911,2145.46.58,6404.66.2+2,574
70 to 7410,7015.25.87,3633.93.5+3,338
75 to 798,2104.04.96,1403.22.6+2,070
80 to 846,2683.02.85,7273.01.5+541
85 and over7,3003.51.76,4543.42.0+846
Total population207,292100.0100.0189,037100.0100.0+18,255
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 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 Millswood 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, 15.9% of the population was aged between 0 and 15, and 21.1% were aged 65 years and over, compared with 17.7% and 21.7% respectively for Millswood.

The major differences between the age structure of Eastern Region Alliance area and Millswood were:

  • A larger percentage of persons aged 30 to 34 (6.4% compared to 3.2%)
  • A larger percentage of persons aged 35 to 39 (6.7% compared to 4.3%)
  • A larger percentage of persons aged 25 to 29 (6.5% compared to 4.2%)
  • A smaller percentage of persons aged 10 to 14 (5.9% compared to 7.7%)

Emerging groups

From 2011 to 2021, Eastern Region Alliance area's population increased by 18,255 people (9.7%). This represents an average annual population change of 0.93% per year over the period.

The largest changes in age structure in this area between 2011 and 2021 were in the age groups:

  • 70 to 74 (+3,338 persons)
  • 65 to 69 (+2,574 persons)
  • 75 to 79 (+2,070 persons)
  • 30 to 34 (+1,940 persons)

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