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LEARN MORE ABOUT .idIn 2021, the largest age group in the Central North District was 30 to 34 year olds. The group that changed the most since 2001 was 65 to 69 year olds, increasing by 2,219 people.
The Age Structure of the Central 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 Central 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 Central 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 | |||||||
|---|---|---|---|---|---|---|---|
| Central North District - Total persons (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | City of Onkaparinga % | Number | % | City of Onkaparinga % | 2001 to 2021 |
| 0 to 4 | 4,129 | 5.4 | 5.4 | 4,865 | 6.9 | 6.6 | -737 |
| 5 to 9 | 4,455 | 5.8 | 6.2 | 5,342 | 7.6 | 7.6 | -888 |
| 10 to 14 | 4,400 | 5.8 | 6.2 | 5,068 | 7.2 | 7.8 | -669 |
| 15 to 19 | 4,285 | 5.6 | 5.8 | 5,162 | 7.4 | 7.9 | -877 |
| 20 to 24 | 4,611 | 6.0 | 5.6 | 4,552 | 6.5 | 6.2 | +59 |
| 25 to 29 | 5,171 | 6.8 | 6.0 | 4,895 | 7.0 | 6.2 | +275 |
| 30 to 34 | 5,189 | 6.8 | 6.3 | 5,221 | 7.4 | 7.0 | -32 |
| 35 to 39 | 5,154 | 6.7 | 6.7 | 5,163 | 7.4 | 7.5 | -9 |
| 40 to 44 | 4,534 | 5.9 | 6.1 | 5,044 | 7.2 | 8.1 | -510 |
| 45 to 49 | 4,677 | 6.1 | 6.4 | 5,073 | 7.2 | 7.9 | -396 |
| 50 to 54 | 4,942 | 6.5 | 6.6 | 5,168 | 7.4 | 7.7 | -227 |
| 55 to 59 | 4,756 | 6.2 | 6.5 | 3,726 | 5.3 | 5.2 | +1,029 |
| 60 to 64 | 4,603 | 6.0 | 6.3 | 2,708 | 3.9 | 3.7 | +1,895 |
| 65 to 69 | 4,389 | 5.7 | 5.9 | 2,169 | 3.1 | 3.0 | +2,219 |
| 70 to 74 | 4,388 | 5.7 | 5.7 | 2,248 | 3.2 | 2.9 | +2,140 |
| 75 to 79 | 3,032 | 4.0 | 3.8 | 1,747 | 2.5 | 2.3 | +1,284 |
| 80 to 84 | 1,893 | 2.5 | 2.3 | 1,135 | 1.6 | 1.4 | +758 |
| 85 and over | 1,868 | 2.4 | 2.2 | 841 | 1.2 | 1.0 | +1,026 |
| Total population | 76,476 | 100.0 | 100.0 | 70,136 | 100.0 | 100.0 | +6,339 |
Dominant groups
Analysis of the five year age groups of the Central 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, 17.0% of the population was aged between 0 and 15, and 20.4% were aged 65 years and over, compared with 17.7% and 19.9% respectively for the City of Onkaparinga.
The major difference between the age structure of the Central North District and the City of Onkaparinga is:
- A larger percentage of persons aged 25 to 29 (6.8% compared to 6.0%)
Emerging groups
From 2001 to 2021, Central North District's population increased by 6,340 people (9.0%). This represents an average annual population change of 0.43% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 65 to 69 (+2,219 persons)
- 70 to 74 (+2,140 persons)
- 60 to 64 (+1,895 persons)
- 75 to 79 (+1,284 persons)
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