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City of AdelaideCommunity profile

City of Adelaide

Five year age groups

In 2021, the largest age group in the City of Adelaide was 20 to 24 year olds. The group that changed the most since 2016 was 25 to 29 year olds, increasing by 512 people.

The Age Structure of the City of Adelaide provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the City of Adelaide'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 the City of Adelaide'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
City of Adelaide - Total persons (Enumerated)20212016Change
Five year age groups (years)Number%Greater Adelaide %Number%Greater Adelaide %2016 to 2021
0 to 46272.25.46752.45.9-48
5 to 95842.05.94401.66.0+144
10 to 145541.95.94021.55.7+152
15 to 191,5785.45.71,7596.46.2-181
20 to 244,81016.66.64,96418.06.9-154
25 to 293,92113.57.03,40912.46.8+512
30 to 342,7859.67.02,5799.37.0+206
35 to 392,1197.37.01,7676.46.4+352
40 to 441,6395.76.31,5725.76.5+67
45 to 491,4975.26.31,6095.86.8-112
50 to 541,4024.86.41,6966.16.6-294
55 to 591,4645.06.21,4575.36.4+7
60 to 641,4294.95.91,4045.15.7+25
65 to 691,3364.65.21,3695.05.2-33
70 to 741,2764.44.89253.43.9+351
75 to 798563.03.46322.33.0+224
80 to 845211.82.43821.42.3+139
85 and over5942.02.65592.02.7+35
Total population28,992100.0100.027,600100.0100.0+1,392
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 the City of Adelaide in 2021 compared to Greater Adelaide 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, 6.1% of the population was aged between 0 and 15, and 15.8% were aged 65 years and over, compared with 17.3% and 18.5% respectively for Greater Adelaide.

The major differences between the age structure of the City of Adelaide and Greater Adelaide were:

  • A larger percentage of persons aged 20 to 24 (16.6% compared to 6.6%)
  • A larger percentage of persons aged 25 to 29 (13.5% compared to 7.0%)
  • A smaller percentage of persons aged 10 to 14 (1.9% compared to 5.9%)
  • A smaller percentage of persons aged 5 to 9 (2.0% compared to 5.9%)

Emerging groups

From 2016 to 2021, City of Adelaide's population increased by 1,392 people (5.0%). This represents an average annual population change of 0.99% per year over the period.

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

  • 25 to 29 (+512 persons)
  • 35 to 39 (+352 persons)
  • 70 to 74 (+351 persons)
  • 50 to 54 (-294 persons)

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