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LEARN MORE ABOUT .idIn 2021, Tiwi Islands Regional Council LGA had higher proportion of children (under 18) and a lower proportion of persons aged 60 or older than the RDA Northern Territory.
The Age Structure of Tiwi Islands Regional Council LGA provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Tiwi Islands Regional Council LGA'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 Tiwi Islands Regional Council LGA'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 | |||||||
|---|---|---|---|---|---|---|---|
| Tiwi Islands Regional Council LGA - Total persons (Enumerated) | 2021 | 1996 | Change | ||||
| Service age group (years) | Number | % | RDA Northern Territory % | Number | % | RDA Northern Territory % | 1996 to 2021 |
| Babies and pre-schoolers (0 to 4) | 151 | 6.3 | 6.4 | 208 | 10.3 | 8.8 | -57 |
| Primary schoolers (5 to 11) | 232 | 9.7 | 9.3 | 292 | 14.5 | 11.9 | -60 |
| Secondary schoolers (12 to 17) | 282 | 11.8 | 6.9 | 257 | 12.8 | 8.9 | +25 |
| Tertiary education and independence (18 to 24) | 235 | 9.9 | 8.7 | 315 | 15.7 | 11.8 | -80 |
| Young workforce (25 to 34) | 414 | 17.4 | 17.7 | 365 | 18.1 | 19.0 | +49 |
| Parents and homebuilders (35 to 49) | 526 | 22.1 | 21.1 | 382 | 19.0 | 22.9 | +144 |
| Older workers and pre-retirees (50 to 59) | 309 | 13.0 | 12.6 | 113 | 5.6 | 9.0 | +196 |
| Empty nesters and retirees (60 to 69) | 188 | 7.9 | 10.8 | 53 | 2.6 | 5.0 | +135 |
| Seniors (70 to 84) | 47 | 2.0 | 6.1 | 24 | 1.2 | 2.4 | +23 |
| Elderly aged (85 and over) | 0 | -- | 0.5 | 3 | 0.1 | 0.2 | -3 |
| Total | 2,384 | 100.0 | 100.0 | 2,012 | 100.0 | 100.0 | +372 |
Dominant groups
Analysis of the service age groups of Tiwi Islands Regional Council LGA in 2021 compared to the RDA Northern Territory shows that there was a higher proportion of people in the younger age groups (0 to 17 years) and a lower proportion of people in the older age groups (60+ years).
Overall, 27.9% of the population was aged between 0 and 17, and 9.9% were aged 60 years and over, compared with 22.7% and 17.3% respectively for the RDA Northern Territory.
The major differences between the age structure of Tiwi Islands Regional Council LGA and the RDA Northern Territory were:
- A larger percentage of 'Secondary schoolers' (11.8% compared to 6.9%)
- A larger percentage of 'Tertiary education & independence' (9.9% compared to 8.7%)
- A smaller percentage of 'Seniors' (2.0% compared to 6.1%)
- A smaller percentage of 'Empty nesters and retirees' (7.9% compared to 10.8%)
Emerging groups
From 1996 to 2021, Tiwi Islands Regional Council LGA's population increased by 372 people (18.5%). This represents an average annual population change of 0.68% per year over the period.
The largest changes in the age structure in this area between 1996 and 2021 were in the age groups:
- Older workers and pre-retirees (50 to 59) (+196 people)
- Parents and homebuilders (35 to 49) (+144 people)
- Empty nesters and retirees (60 to 69) (+135 people)
- Tertiary education and independence (18 to 24) (-80 people)
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