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LEARN MORE ABOUT .idIn 2021, Big Rivers had lower proportion of children (under 18) and a higher proportion of persons aged 60 or older than Central Desert Regional Council LGA.
The Age Structure of Big Rivers provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Big Rivers'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 Big Rivers'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 | |||||||
|---|---|---|---|---|---|---|---|
| Big Rivers - Total persons (Enumerated) | 2021 | 2011 | Change | ||||
| Service age group (years) | Number | % | Central Desert Regional Council LGA % | Number | % | Central Desert Regional Council LGA % | 2011 to 2021 |
| Babies and pre-schoolers (0 to 4) | 1,460 | 5.7 | 7.2 | 1,917 | 8.8 | 8.8 | -457 |
| Primary schoolers (5 to 11) | 2,377 | 9.4 | 9.8 | 2,457 | 11.3 | 12.8 | -80 |
| Secondary schoolers (12 to 17) | 1,557 | 6.1 | 7.9 | 1,565 | 7.2 | 7.5 | -8 |
| Tertiary education and independence (18 to 24) | 2,530 | 10.0 | 10.9 | 2,219 | 10.2 | 11.8 | +310 |
| Young workforce (25 to 34) | 4,277 | 16.8 | 18.9 | 3,162 | 14.5 | 19.1 | +1,115 |
| Parents and homebuilders (35 to 49) | 4,609 | 18.1 | 21.0 | 4,187 | 19.2 | 19.6 | +422 |
| Older workers and pre-retirees (50 to 59) | 3,300 | 13.0 | 12.2 | 2,771 | 12.7 | 10.9 | +528 |
| Empty nesters and retirees (60 to 69) | 3,451 | 13.6 | 8.3 | 2,395 | 11.0 | 5.8 | +1,056 |
| Seniors (70 to 84) | 1,776 | 7.0 | 3.4 | 1,031 | 4.7 | 2.9 | +744 |
| Elderly aged (85 and over) | 76 | 0.3 | 0.3 | 72 | 0.3 | 0.9 | +4 |
| Total | 25,413 | 100.0 | 100.0 | 21,780 | 100.0 | 100.0 | +3,633 |
Dominant groups
Analysis of the service age groups of Big Rivers in 2021 compared to Central Desert 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, 21.2% of the population was aged between 0 and 17, and 20.9% were aged 60 years and over, compared with 24.9% and 12.1% respectively for Central Desert Regional Council LGA.
The major differences between the age structure of Big Rivers and Central Desert Regional Council LGA were:
- A larger percentage of 'Empty nesters and retirees' (13.6% compared to 8.3%)
- A larger percentage of 'Seniors' (7.0% compared to 3.4%)
- A smaller percentage of 'Parents and homebuilders' (18.1% compared to 21.0%)
- A smaller percentage of 'Young workforce' (16.8% compared to 18.9%)
Emerging groups
From 2011 to 2021, Big Rivers's population increased by 3,633 people (16.7%). This represents an average annual population change of 1.55% per year over the period.
The largest changes in the age structure in this area between 2011 and 2021 were in the age groups:
- Young workforce (25 to 34) (+1,115 people)
- Empty nesters and retirees (60 to 69) (+1,056 people)
- Seniors (70 to 84) (+744 people)
- Older workers and pre-retirees (50 to 59) (+528 people)
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