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City of OnkaparingaCommunity profile

Hills South District

Five year age groups

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In 2021, the largest age group in the Hills South District was 50 to 54 year olds. The group that changed the most since 2016 was 70 to 74 year olds, increasing by 133 people.

The Age Structure of the Hills South 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 South 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 South 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 South District - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %2016 to 2021
0 to 43914.15.44254.76.2-35
5 to 95665.96.25816.46.4-15
10 to 146076.46.25506.16.1+56
15 to 195465.75.86156.86.2-69
20 to 244244.55.64034.56.0+21
25 to 293053.26.02552.85.9+50
30 to 343653.86.33694.16.5-5
35 to 395015.36.74925.46.3+8
40 to 445635.96.16307.06.6-67
45 to 496326.66.47368.16.9-104
50 to 547477.86.66737.46.7+74
55 to 597127.56.56817.56.6+31
60 to 647377.76.36467.26.3+90
65 to 697097.45.96026.76.1+107
70 to 746246.65.74905.44.3+133
75 to 794965.23.83834.22.8+113
80 to 843313.52.32342.62.0+96
85 and over2652.82.22723.02.1-7
Total population9,521100.0100.09,045100.0100.0+476
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 Hills South 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 higher proportion of people in the older age groups (65+).

Overall, 16.4% of the population was aged between 0 and 15, and 25.5% were aged 65 years and over, compared with 17.7% and 19.9% respectively for the City of Onkaparinga.

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

  • A larger percentage of persons aged 65 to 69 (7.4% compared to 5.9%)
  • A smaller percentage of persons aged 25 to 29 (3.2% compared to 6.0%)
  • A smaller percentage of persons aged 30 to 34 (3.8% compared to 6.3%)
  • A smaller percentage of persons aged 35 to 39 (5.3% compared to 6.7%)

Emerging groups

From 2016 to 2021, Hills South District's population increased by 476 people (5.3%). This represents an average annual population change of 1.03% 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 (+133 persons)
  • 75 to 79 (+113 persons)
  • 65 to 69 (+107 persons)
  • 45 to 49 (-104 persons)

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