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LEARN MORE ABOUT .idIn 2021, the largest age group in Tiwi Islands Regional Council LGA was 25 to 29 year olds. The group that changed the most since 2016 was 25 to 29 year olds, increasing by 19 people.
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 also an indicator of Tiwi Islands Regional Council LGA'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 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 - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| Tiwi Islands Regional Council LGA - Total females (Usual residence) | 2021 | 2016 | Change | ||||
| Five year age groups (years) | Number | % | Central Desert Regional Council LGA % | Number | % | Central Desert Regional Council LGA % | 2016 to 2021 |
| 0 to 4 | 73 | 6.1 | 8.6 | 85 | 6.9 | 8.3 | -12 |
| 5 to 9 | 84 | 7.1 | 8.1 | 101 | 8.2 | 10.1 | -17 |
| 10 to 14 | 108 | 9.1 | 8.7 | 113 | 9.2 | 9.1 | -5 |
| 15 to 19 | 107 | 9.0 | 8.2 | 89 | 7.2 | 6.7 | +18 |
| 20 to 24 | 86 | 7.2 | 8.2 | 98 | 8.0 | 8.4 | -12 |
| 25 to 29 | 122 | 10.3 | 9.5 | 103 | 8.4 | 7.7 | +19 |
| 30 to 34 | 89 | 7.5 | 7.6 | 105 | 8.5 | 9.1 | -16 |
| 35 to 39 | 93 | 7.8 | 7.1 | 97 | 7.9 | 7.5 | -4 |
| 40 to 44 | 75 | 6.3 | 7.4 | 91 | 7.4 | 7.5 | -16 |
| 45 to 49 | 94 | 7.9 | 6.5 | 89 | 7.2 | 5.8 | +5 |
| 50 to 54 | 91 | 7.6 | 4.4 | 82 | 6.7 | 6.4 | +9 |
| 55 to 59 | 60 | 5.0 | 4.6 | 70 | 5.7 | 3.6 | -10 |
| 60 to 64 | 53 | 4.5 | 4.3 | 46 | 3.7 | 4.5 | +7 |
| 65 to 69 | 31 | 2.6 | 3.0 | 32 | 2.6 | 1.6 | -1 |
| 70 to 74 | 16 | 1.3 | 1.6 | 10 | 0.8 | 1.6 | +6 |
| 75 to 79 | 0 | -- | 1.2 | 8 | 0.7 | 0.6 | -8 |
| 80 to 84 | 8 | 0.7 | 0.4 | 7 | 0.6 | 1.0 | +1 |
| 85 and over | 0 | -- | 0.6 | 4 | 0.3 | 0.2 | -4 |
| Total population | 1,190 | 100.0 | 100.0 | 1,230 | 100.0 | 100.0 | -40 |
Dominant groups
Analysis of the female five year age groups of Tiwi Islands Regional Council LGA in 2021 compared to Central Desert Regional Council LGA shows that there was a lower proportion of females in the younger age groups (under 15) as well as a lower proportion of females in the older age groups (65+).
Overall, 22.3% of the female population was aged between 0 and 15, and 4.6% were aged 65 years and over, compared with 25.4% and 6.9% respectively for Central Desert Regional Council LGA.
The major differences between the female age structure of Tiwi Islands Regional Council LGA and Central Desert Regional Council LGA were:
- A larger percentage of females aged 50 to 54 (7.6% compared to 4.4%)
- A larger percentage of females aged 45 to 49 (7.9% compared to 6.5%)
- A smaller percentage of females aged 0 to 4 (6.1% compared to 8.6%)
- A smaller percentage of females aged 75 to 79 (0.0% compared to 1.2%)
Emerging groups
From 2016 to 2021, Tiwi Islands Regional Council LGA's female population decreased by 40 people (3.3%). This represents an average annual population change of -0.66% per year over the period.
There were no major differences in Tiwi Islands Regional Council LGA between 2016 and 2021.
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