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LEARN MORE ABOUT .idIn 2021, Central Australia had lower proportion of children (under 18) and a higher proportion of persons aged 60 or older than Tiwi Islands Regional Council LGA.
The Age Structure of Central Australia provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Central Australia's residential role and function and how it is likely to change in the future.
Service age groups divide the population into age categories that reflect typical life-stages. They indicate the level of demand for services that target people at different stages in life and how that demand is changing.
To get a more complete picture Central Australia'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 - Service age groups | |||||||
|---|---|---|---|---|---|---|---|
| Central Australia - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Service age group (years) | Number | % | Tiwi Islands Regional Council LGA % | Number | % | Tiwi Islands Regional Council LGA % | 1991 to 2021 |
| Babies and pre-schoolers (0 to 4) | 2,769 | 6.6 | 6.3 | 3,619 | 9.7 | 9.5 | -850 |
| Primary schoolers (5 to 11) | 3,846 | 9.2 | 9.7 | 4,653 | 12.4 | 15.8 | -807 |
| Secondary schoolers (12 to 17) | 2,888 | 6.9 | 11.8 | 3,311 | 8.8 | 11.9 | -423 |
| Tertiary education and independence (18 to 24) | 3,428 | 8.2 | 9.9 | 4,884 | 13.0 | 15.7 | -1,456 |
| Young workforce (25 to 34) | 7,607 | 18.1 | 17.4 | 7,926 | 21.2 | 18.9 | -319 |
| Parents and homebuilders (35 to 49) | 8,751 | 20.9 | 22.1 | 7,553 | 20.2 | 17.8 | +1,198 |
| Older workers and pre-retirees (50 to 59) | 5,328 | 12.7 | 13.0 | 3,012 | 8.0 | 5.7 | +2,316 |
| Empty nesters and retirees (60 to 69) | 4,785 | 11.4 | 7.9 | 1,463 | 3.9 | 3.3 | +3,322 |
| Seniors (70 to 84) | 2,335 | 5.6 | 2.0 | 979 | 2.6 | 1.4 | +1,356 |
| Elderly aged (85 and over) | 210 | 0.5 | -- | 75 | 0.2 | -- | +135 |
| Total | 41,947 | 100.0 | 100.0 | 37,475 | 100.0 | 100.0 | +4,472 |
Dominant groups
Analysis of the service age groups of Central Australia in 2021 compared to Tiwi Islands Regional Council LGA shows that there was a lower proportion of people in the younger age groups (0 to 17 years) and a higher proportion of people in the older age groups (60+ years).
Overall, 22.7% of the population was aged between 0 and 17, and 17.5% were aged 60 years and over, compared with 27.9% and 9.9% respectively for Tiwi Islands Regional Council LGA.
The major differences between the age structure of Central Australia and Tiwi Islands Regional Council LGA were:
- A larger percentage of 'Seniors' (5.6% compared to 2.0%)
- A larger percentage of 'Empty nesters and retirees' (11.4% compared to 7.9%)
- A smaller percentage of 'Secondary schoolers' (6.9% compared to 11.8%)
- A smaller percentage of 'Tertiary education & independence' (8.2% compared to 9.9%)
Emerging groups
From 1991 to 2021, Central Australia's population increased by 4,472 people (11.9%). This represents an average annual population change of 0.38% per year over the period.
The largest changes in the age structure in this area between 1991 and 2021 were in the age groups:
- Empty nesters and retirees (60 to 69) (+3,322 people)
- Older workers and pre-retirees (50 to 59) (+2,316 people)
- Tertiary education and independence (18 to 24) (-1,456 people)
- Seniors (70 to 84) (+1,356 people)
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