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City of OnkaparingaCommunity profile

Hills North District

Five year age groups

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In 2021, the largest age group in the Hills North District was 50 to 54 year olds. The group that changed the most since 1991 was 60 to 64 year olds, increasing by 408 people.

The Age Structure of the Hills North District 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 Hills North District'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 Hills North District'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
Hills North District - Total persons (Enumerated)20211991Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %1991 to 2021
0 to 42614.15.43338.08.4-73
5 to 93595.66.33748.99.2-16
10 to 144216.66.33287.88.9+93
15 to 194847.65.93438.28.2+140
20 to 243275.15.62706.56.7+56
25 to 292554.05.92375.77.6+17
30 to 342403.86.33748.99.0-135
35 to 393165.06.73608.69.3-45
40 to 443505.56.244210.59.3-92
45 to 494887.76.43177.65.9+171
50 to 545538.76.62225.34.1+331
55 to 595408.56.41814.33.1+358
60 to 645388.46.31303.13.0+408
65 to 694296.75.8922.22.7+337
70 to 743996.35.61012.42.1+297
75 to 792674.23.8481.21.5+219
80 to 841021.62.3220.50.7+80
85 and over450.72.2130.30.3+32
Total population6,374100.0100.04,195100.0100.0+2,179
Source: Australian Bureau of Statistics, Census of Population and Housing 1991 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 Hills North District in 2021 compared to the City of Onkaparinga shows that there was a lower proportion of people in the younger age groups (under 15) and a similar proportion of people in the older age groups (65+).

Overall, 16.3% of the population was aged between 0 and 15, and 19.5% were aged 65 years and over, compared with 18.0% and 19.7% respectively for the City of Onkaparinga.

The major differences between the age structure of the Hills North District and the City of Onkaparinga were:

  • A larger percentage of persons aged 60 to 64 (8.4% compared to 6.3%)
  • A larger percentage of persons aged 55 to 59 (8.5% compared to 6.4%)
  • A larger percentage of persons aged 50 to 54 (8.7% compared to 6.6%)
  • A smaller percentage of persons aged 30 to 34 (3.8% compared to 6.3%)

Emerging groups

From 1991 to 2021, Hills North District's population increased by 2,179 people (51.9%). This represents an average annual population change of 1.4% per year over the period.

The largest changes in age structure in this area between 1991 and 2021 were in the age groups:

  • 60 to 64 (+408 persons)
  • 55 to 59 (+358 persons)
  • 65 to 69 (+337 persons)
  • 50 to 54 (+331 persons)

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