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LEARN MORE ABOUT .idIn 2021, the largest age group in Bonnet Bay was 45 to 49 year olds. The group that changed the most since 1991 was 40 to 44 year olds, decreasing by 208 people.
The Age Structure of Bonnet Bay provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Bonnet Bay'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 Bonnet Bay'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 | |||||||
|---|---|---|---|---|---|---|---|
| Bonnet Bay - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Engadine % | Number | % | Engadine % | 1991 to 2021 |
| 0 to 4 | 119 | 5.7 | 6.5 | 176 | 6.7 | 7.3 | -58 |
| 5 to 9 | 130 | 6.2 | 7.3 | 245 | 9.3 | 7.6 | -116 |
| 10 to 14 | 145 | 7.0 | 8.3 | 305 | 11.6 | 9.9 | -161 |
| 15 to 19 | 128 | 6.1 | 6.9 | 305 | 11.6 | 11.5 | -178 |
| 20 to 24 | 109 | 5.2 | 5.2 | 142 | 5.4 | 7.8 | -34 |
| 25 to 29 | 69 | 3.3 | 3.9 | 101 | 3.8 | 5.9 | -33 |
| 30 to 34 | 78 | 3.7 | 5.2 | 149 | 5.7 | 6.8 | -71 |
| 35 to 39 | 134 | 6.4 | 7.0 | 217 | 8.2 | 7.7 | -84 |
| 40 to 44 | 147 | 7.0 | 8.2 | 355 | 13.5 | 10.6 | -208 |
| 45 to 49 | 165 | 7.9 | 7.6 | 280 | 10.6 | 9.0 | -116 |
| 50 to 54 | 150 | 7.2 | 6.3 | 159 | 6.0 | 5.5 | -10 |
| 55 to 59 | 142 | 6.8 | 5.2 | 76 | 2.9 | 3.7 | +66 |
| 60 to 64 | 145 | 7.0 | 4.5 | 47 | 1.8 | 2.3 | +97 |
| 65 to 69 | 139 | 6.7 | 4.2 | 41 | 1.6 | 1.6 | +98 |
| 70 to 74 | 143 | 6.9 | 5.0 | 22 | 0.9 | 1.3 | +120 |
| 75 to 79 | 94 | 4.5 | 4.4 | 8 | 0.3 | 0.9 | +85 |
| 80 to 84 | 29 | 1.4 | 2.3 | 2 | 0.1 | 0.3 | +26 |
| 85 and over | 20 | 1.0 | 1.9 | 0 | -- | 0.2 | +20 |
| Total population | 2,086 | 100.0 | 100.0 | 2,641 | 100.0 | 100.0 | -555 |
Dominant groups
Analysis of the five year age groups of Bonnet Bay in 2021 compared to Engadine shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 18.9% of the population was aged between 0 and 15, and 20.4% were aged 65 years and over, compared with 22.2% and 17.8% respectively for Engadine.
The major differences between the age structure of Bonnet Bay and Engadine were:
- A larger percentage of persons aged 65 to 69 (6.7% compared to 4.2%)
- A larger percentage of persons aged 60 to 64 (7.0% compared to 4.5%)
- A larger percentage of persons aged 70 to 74 (6.9% compared to 5.0%)
- A larger percentage of persons aged 55 to 59 (6.8% compared to 5.2%)
Emerging groups
From 1991 to 2021, Bonnet Bay's population decreased by 555 people (21.0%). This represents an average annual population change of -0.78% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 40 to 44 (-208 persons)
- 15 to 19 (-178 persons)
- 10 to 14 (-161 persons)
- 70 to 74 (+120 persons)
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