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LEARN MORE ABOUT .idIn 2021, the largest age group in Greater Brisbane was 35 to 39 year olds. The group that changed the most since 2011 was 70 to 74 year olds, increasing by 43,605 people.
The Age Structure of Greater Brisbane provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Greater Brisbane'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 Greater Brisbane'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 | |||||||
|---|---|---|---|---|---|---|---|
| Greater Brisbane - Total persons (Enumerated) | 2021 | 2011 | Change | ||||
| Five year age groups (years) | Number | % | Northern Territory % | Number | % | Northern Territory % | 2011 to 2021 |
| 0 to 4 | 150,403 | 6.0 | 6.4 | 144,287 | 7.0 | 7.6 | +6,116 |
| 5 to 9 | 165,574 | 6.6 | 6.7 | 135,652 | 6.6 | 7.3 | +29,922 |
| 10 to 14 | 167,954 | 6.7 | 6.2 | 134,218 | 6.5 | 6.9 | +33,736 |
| 15 to 19 | 157,267 | 6.3 | 5.5 | 143,763 | 7.0 | 6.4 | +13,504 |
| 20 to 24 | 173,579 | 6.9 | 6.4 | 155,849 | 7.6 | 7.5 | +17,730 |
| 25 to 29 | 183,925 | 7.3 | 8.7 | 157,135 | 7.6 | 8.7 | +26,790 |
| 30 to 34 | 188,010 | 7.5 | 9.0 | 147,033 | 7.1 | 7.9 | +40,977 |
| 35 to 39 | 188,536 | 7.5 | 8.0 | 152,767 | 7.4 | 7.7 | +35,769 |
| 40 to 44 | 169,780 | 6.8 | 6.8 | 150,758 | 7.3 | 7.5 | +19,022 |
| 45 to 49 | 168,029 | 6.7 | 6.3 | 141,138 | 6.9 | 6.9 | +26,891 |
| 50 to 54 | 158,693 | 6.3 | 6.5 | 130,202 | 6.3 | 6.7 | +28,491 |
| 55 to 59 | 142,303 | 5.7 | 6.1 | 115,472 | 5.6 | 6.1 | +26,831 |
| 60 to 64 | 128,293 | 5.1 | 5.8 | 106,807 | 5.2 | 5.3 | +21,486 |
| 65 to 69 | 111,477 | 4.4 | 5.0 | 78,071 | 3.8 | 3.4 | +33,406 |
| 70 to 74 | 100,345 | 4.0 | 3.5 | 56,740 | 2.8 | 2.1 | +43,605 |
| 75 to 79 | 70,810 | 2.8 | 1.7 | 42,086 | 2.0 | 1.0 | +28,724 |
| 80 to 84 | 45,120 | 1.8 | 0.8 | 34,144 | 1.7 | 0.6 | +10,976 |
| 85 and over | 43,010 | 1.7 | 0.5 | 32,495 | 1.6 | 0.4 | +10,515 |
| Total population | 2,513,108 | 100.0 | 100.0 | 2,058,617 | 100.0 | 100.0 | +454,491 |
Dominant groups
Analysis of the five year age groups of Greater Brisbane in 2021 compared to Northern Territory shows that there was a similar proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 19.3% of the population was aged between 0 and 15, and 14.8% were aged 65 years and over, compared with 19.4% and 11.5% respectively for Northern Territory.
The major differences between the age structure of Greater Brisbane and Northern Territory were:
- A larger percentage of persons aged 85 and over (1.7% compared to 0.5%)
- A larger percentage of persons aged 75 to 79 (2.8% compared to 1.7%)
- A smaller percentage of persons aged 30 to 34 (7.5% compared to 9.0%)
- A smaller percentage of persons aged 25 to 29 (7.3% compared to 8.7%)
Emerging groups
From 2011 to 2021, Greater Brisbane's population increased by 454,491 people (22.1%). This represents an average annual population change of 2.01% per year over the period.
The largest changes in age structure in this area between 2011 and 2021 were in the age groups:
- 70 to 74 (+43,605 persons)
- 30 to 34 (+40,977 persons)
- 35 to 39 (+35,769 persons)
- 10 to 14 (+33,736 persons)
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