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LEARN MORE ABOUT .idIn 2021, the largest age group in Cooks River Catchment area was 30 to 34 year olds. The group that changed the most since 2001 was 25 to 29 year olds, increasing by 22,193 people.
The Age Structure of Cooks River Catchment area provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Cooks River Catchment area'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 Cooks River Catchment area'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 | |||||||
|---|---|---|---|---|---|---|---|
| Cooks River Catchment area - Total persons (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | Yagoona % | Number | % | Yagoona % | 2001 to 2021 |
| 0 to 4 | 29,223 | 5.6 | 7.6 | 25,389 | 6.5 | 7.4 | +3,833 |
| 5 to 9 | 26,407 | 5.0 | 7.4 | 23,837 | 6.1 | 7.5 | +2,570 |
| 10 to 14 | 24,850 | 4.7 | 7.0 | 22,190 | 5.7 | 7.2 | +2,660 |
| 15 to 19 | 23,539 | 4.5 | 6.7 | 24,333 | 6.2 | 7.0 | -794 |
| 20 to 24 | 40,558 | 7.7 | 7.2 | 28,995 | 7.4 | 6.7 | +11,562 |
| 25 to 29 | 55,888 | 10.6 | 7.0 | 33,695 | 8.6 | 6.8 | +22,193 |
| 30 to 34 | 55,968 | 10.6 | 7.2 | 34,486 | 8.8 | 7.1 | +21,481 |
| 35 to 39 | 46,183 | 8.8 | 6.7 | 33,532 | 8.6 | 7.2 | +12,650 |
| 40 to 44 | 35,998 | 6.8 | 5.9 | 29,609 | 7.6 | 7.1 | +6,388 |
| 45 to 49 | 32,553 | 6.2 | 6.1 | 25,525 | 6.5 | 6.3 | +7,027 |
| 50 to 54 | 30,630 | 5.8 | 5.5 | 23,058 | 5.9 | 5.7 | +7,571 |
| 55 to 59 | 28,569 | 5.4 | 5.7 | 18,472 | 4.7 | 4.4 | +10,097 |
| 60 to 64 | 24,753 | 4.7 | 5.6 | 16,148 | 4.1 | 3.6 | +8,604 |
| 65 to 69 | 20,666 | 3.9 | 4.6 | 14,420 | 3.7 | 3.4 | +6,245 |
| 70 to 74 | 17,431 | 3.3 | 3.7 | 12,947 | 3.3 | 4.5 | +4,484 |
| 75 to 79 | 12,830 | 2.4 | 2.4 | 10,417 | 2.7 | 4.2 | +2,413 |
| 80 to 84 | 10,037 | 1.9 | 1.7 | 7,047 | 1.8 | 2.2 | +2,990 |
| 85 and over | 10,078 | 1.9 | 2.0 | 5,855 | 1.5 | 1.5 | +4,222 |
| Total population | 526,161 | 100.0 | 100.0 | 389,963 | 100.0 | 100.0 | +136,197 |
Dominant groups
Analysis of the five year age groups of Cooks River Catchment area in 2021 compared to Yagoona 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, 15.3% of the population was aged between 0 and 15, and 13.5% were aged 65 years and over, compared with 22.0% and 14.4% respectively for Yagoona.
The major differences between the age structure of Cooks River Catchment area and Yagoona were:
- A larger percentage of persons aged 25 to 29 (10.6% compared to 7.0%)
- A larger percentage of persons aged 30 to 34 (10.6% compared to 7.2%)
- A smaller percentage of persons aged 5 to 9 (5.0% compared to 7.4%)
- A smaller percentage of persons aged 10 to 14 (4.7% compared to 7.0%)
Emerging groups
From 2001 to 2021, Cooks River Catchment area's population increased by 136,198 people (34.9%). This represents an average annual population change of 1.51% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 25 to 29 (+22,193 persons)
- 30 to 34 (+21,481 persons)
- 35 to 39 (+12,650 persons)
- 20 to 24 (+11,562 persons)
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