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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 2001 was 60 to 64 year olds, increasing by 4,159 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)20212001Change
Five year age groups (years)Number%City of Unley %Number%City of Unley %2001 to 2021
0 to 49,3474.64.48,8975.05.3+450
5 to 911,5735.65.49,5995.45.3+1,974
10 to 1412,1445.95.910,0835.75.2+2,061
15 to 1911,9255.85.511,6336.66.2+292
20 to 2412,9616.36.112,7937.28.0+168
25 to 2913,3286.56.312,4817.07.8+847
30 to 3413,1676.46.112,6327.17.6+535
35 to 3913,7116.76.412,7907.27.6+921
40 to 4413,3346.56.613,1857.47.6+149
45 to 4913,2406.46.612,4247.07.6+816
50 to 5413,1936.46.512,2106.97.1+983
55 to 5912,4906.15.99,5375.44.8+2,953
60 to 6412,0865.96.07,9274.53.5+4,159
65 to 6910,9695.35.76,8733.93.0+4,096
70 to 7410,4955.15.57,2414.13.4+3,254
75 to 798,0683.93.86,7173.83.4+1,351
80 to 846,1573.02.95,1722.93.1+985
85 and over7,1943.54.15,0952.93.5+2,099
Total population205,382100.0100.0177,289100.0100.0+28,093
Source: Australian Bureau of Statistics, Census of Population and Housing 2001 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, 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 2001 to 2021, Eastern Region Alliance area's population increased by 28,093 people (15.8%). This represents an average annual population change of 0.74% per year over the period.

The largest changes in age structure in this area between 2001 and 2021 were in the age groups:

  • 60 to 64 (+4,159 persons)
  • 65 to 69 (+4,096 persons)
  • 70 to 74 (+3,254 persons)
  • 55 to 59 (+2,953 persons)

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