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LEARN MORE ABOUT .idIn 2021, the largest age group in the Central South District was 35 to 39 year olds. The group that changed the most since 2011 was 30 to 34 year olds, increasing by 607 people.
The Age Structure of the Central 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 Central 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 Central 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 | |||||||
|---|---|---|---|---|---|---|---|
| Central South District - Total persons (Enumerated) | 2021 | 2011 | Change | ||||
| Five year age groups (years) | Number | % | City of Onkaparinga % | Number | % | City of Onkaparinga % | 2011 to 2021 |
| 0 to 4 | 1,620 | 6.4 | 5.4 | 1,341 | 7.2 | 6.7 | +279 |
| 5 to 9 | 1,807 | 7.1 | 6.3 | 1,242 | 6.7 | 6.4 | +565 |
| 10 to 14 | 1,732 | 6.8 | 6.3 | 1,258 | 6.8 | 6.8 | +474 |
| 15 to 19 | 1,493 | 5.9 | 5.9 | 1,240 | 6.7 | 6.9 | +253 |
| 20 to 24 | 1,457 | 5.7 | 5.6 | 1,109 | 6.0 | 6.2 | +348 |
| 25 to 29 | 1,745 | 6.9 | 5.9 | 1,275 | 6.9 | 6.4 | +470 |
| 30 to 34 | 1,796 | 7.1 | 6.3 | 1,189 | 6.4 | 6.3 | +607 |
| 35 to 39 | 1,928 | 7.6 | 6.7 | 1,322 | 7.1 | 6.7 | +606 |
| 40 to 44 | 1,612 | 6.3 | 6.2 | 1,334 | 7.2 | 7.1 | +278 |
| 45 to 49 | 1,645 | 6.5 | 6.4 | 1,294 | 7.0 | 7.1 | +351 |
| 50 to 54 | 1,580 | 6.2 | 6.6 | 1,235 | 6.7 | 7.0 | +345 |
| 55 to 59 | 1,467 | 5.8 | 6.4 | 1,127 | 6.1 | 6.6 | +340 |
| 60 to 64 | 1,384 | 5.4 | 6.3 | 1,033 | 5.6 | 6.4 | +351 |
| 65 to 69 | 1,283 | 5.1 | 5.8 | 772 | 4.2 | 4.4 | +511 |
| 70 to 74 | 1,142 | 4.5 | 5.6 | 577 | 3.1 | 3.1 | +565 |
| 75 to 79 | 760 | 3.0 | 3.8 | 440 | 2.4 | 2.3 | +320 |
| 80 to 84 | 480 | 1.9 | 2.3 | 433 | 2.3 | 1.9 | +47 |
| 85 and over | 468 | 1.8 | 2.2 | 293 | 1.6 | 1.8 | +175 |
| Total population | 25,399 | 100.0 | 100.0 | 18,518 | 100.0 | 100.0 | +6,881 |
Dominant groups
Analysis of the five year age groups of the Central South District in 2021 compared to the City of Onkaparinga shows that there was a higher proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).
Overall, 20.3% of the population was aged between 0 and 15, and 16.3% 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 Central South District and the City of Onkaparinga were:
- A larger percentage of persons aged 25 to 29 (6.9% compared to 5.9%)
- A larger percentage of persons aged 0 to 4 (6.4% compared to 5.4%)
- A larger percentage of persons aged 35 to 39 (7.6% compared to 6.7%)
- A smaller percentage of persons aged 70 to 74 (4.5% compared to 5.6%)
Emerging groups
From 2011 to 2021, Central South District's population increased by 6,881 people (37.2%). This represents an average annual population change of 3.21% per year over the period.
The largest changes in age structure in this area between 2011 and 2021 were in the age groups:
- 30 to 34 (+607 persons)
- 35 to 39 (+606 persons)
- 70 to 74 (+565 persons)
- 5 to 9 (+565 persons)
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