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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 2001 was 0 to 4 year olds, decreasing by 63 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 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | RDA Northern Territory % | Number | % | RDA Northern Territory % | 2001 to 2021 |
| 0 to 4 | 73 | 6.1 | 6.8 | 136 | 12.1 | 8.7 | -63 |
| 5 to 9 | 84 | 7.1 | 7.2 | 121 | 10.7 | 9.0 | -37 |
| 10 to 14 | 108 | 9.1 | 6.6 | 91 | 8.1 | 8.3 | +17 |
| 15 to 19 | 107 | 9.0 | 6.0 | 103 | 9.1 | 7.6 | +4 |
| 20 to 24 | 86 | 7.2 | 6.5 | 109 | 9.7 | 8.0 | -23 |
| 25 to 29 | 122 | 10.3 | 9.3 | 110 | 9.8 | 9.5 | +12 |
| 30 to 34 | 89 | 7.5 | 9.8 | 100 | 8.9 | 9.6 | -11 |
| 35 to 39 | 93 | 7.8 | 8.6 | 86 | 7.6 | 8.8 | +7 |
| 40 to 44 | 75 | 6.3 | 7.2 | 65 | 5.8 | 8.0 | +10 |
| 45 to 49 | 94 | 7.9 | 6.5 | 63 | 5.6 | 7.0 | +31 |
| 50 to 54 | 91 | 7.6 | 6.5 | 51 | 4.5 | 5.8 | +40 |
| 55 to 59 | 60 | 5.0 | 5.6 | 22 | 2.0 | 3.6 | +38 |
| 60 to 64 | 53 | 4.5 | 4.8 | 21 | 1.9 | 2.3 | +32 |
| 65 to 69 | 31 | 2.6 | 3.5 | 19 | 1.7 | 1.4 | +12 |
| 70 to 74 | 16 | 1.3 | 2.5 | 12 | 1.1 | 1.0 | +4 |
| 75 to 79 | 0 | -- | 1.3 | 6 | 0.5 | 0.6 | -6 |
| 80 to 84 | 8 | 0.7 | 0.8 | 6 | 0.5 | 0.4 | +2 |
| 85 and over | 0 | -- | 0.6 | 6 | 0.5 | 0.4 | -6 |
| Total population | 1,190 | 100.0 | 100.0 | 1,127 | 100.0 | 100.0 | +63 |
Dominant groups
Analysis of the female five year age groups of Tiwi Islands Regional Council LGA in 2021 compared to the RDA Northern Territory shows that there was a higher proportion of females in the younger age groups (under 15) and 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 20.6% and 8.8% respectively for the RDA Northern Territory.
The major differences between the female age structure of Tiwi Islands Regional Council LGA and the RDA Northern Territory were:
- A larger percentage of females aged 15 to 19 (9.0% compared to 6.0%)
- A larger percentage of females aged 10 to 14 (9.1% compared to 6.6%)
- A larger percentage of females aged 45 to 49 (7.9% compared to 6.5%)
- A smaller percentage of females aged 30 to 34 (7.5% compared to 9.8%)
Emerging groups
From 2001 to 2021, Tiwi Islands Regional Council LGA's female population increased by 63 people (5.6%). This represents an average annual population change of 0.27% per year over the period.
The largest change in female age structure in this area between 2001 and 2021 was in the age group:
- 0 to 4 (-63 females)
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