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LEARN MORE ABOUT .idIn 2021, the largest age group in St Leonards was 35 to 39 year olds. The group that changed the most since 1996 was 35 to 39 year olds, increasing by 341 people.
The Age Structure of St Leonards provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of St Leonards'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 St Leonards'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 | |||||||
|---|---|---|---|---|---|---|---|
| St Leonards - Total persons (Enumerated) | 2021 | 1996 | Change | ||||
| Five year age groups (years) | Number | % | North Sydney Council area % | Number | % | North Sydney Council area % | 1996 to 2021 |
| 0 to 4 | 143 | 4.6 | 5.0 | 69 | 6.7 | 3.7 | +74 |
| 5 to 9 | 76 | 2.4 | 4.2 | 9 | 0.9 | 2.8 | +67 |
| 10 to 14 | 67 | 2.1 | 3.5 | 21 | 2.1 | 2.7 | +46 |
| 15 to 19 | 70 | 2.2 | 3.1 | 38 | 3.7 | 4.1 | +32 |
| 20 to 24 | 162 | 5.2 | 4.9 | 151 | 14.8 | 9.9 | +11 |
| 25 to 29 | 320 | 10.2 | 9.6 | 129 | 12.6 | 15.4 | +191 |
| 30 to 34 | 365 | 11.7 | 11.6 | 85 | 8.3 | 12.1 | +280 |
| 35 to 39 | 386 | 12.4 | 10.1 | 45 | 4.4 | 8.7 | +341 |
| 40 to 44 | 297 | 9.5 | 8.0 | 56 | 5.5 | 7.3 | +241 |
| 45 to 49 | 186 | 6.0 | 6.6 | 56 | 5.5 | 7.2 | +130 |
| 50 to 54 | 135 | 4.3 | 6.2 | 43 | 4.2 | 6.0 | +92 |
| 55 to 59 | 159 | 5.1 | 5.5 | 36 | 3.5 | 4.5 | +123 |
| 60 to 64 | 122 | 3.9 | 5.3 | 44 | 4.3 | 3.3 | +78 |
| 65 to 69 | 142 | 4.5 | 4.6 | 42 | 4.1 | 3.2 | +100 |
| 70 to 74 | 142 | 4.5 | 4.6 | 59 | 5.8 | 3.2 | +83 |
| 75 to 79 | 116 | 3.7 | 3.4 | 55 | 5.4 | 2.6 | +61 |
| 80 to 84 | 93 | 3.0 | 2.1 | 49 | 4.8 | 1.9 | +44 |
| 85 and over | 143 | 4.6 | 1.7 | 36 | 3.5 | 1.5 | +107 |
| Total population | 3,124 | 100.0 | 100.0 | 1,023 | 100.0 | 100.0 | +2,101 |
Dominant groups
Analysis of the five year age groups of St Leonards in 2021 compared to North Sydney Council area 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, 9.2% of the population was aged between 0 and 15, and 20.4% were aged 65 years and over, compared with 12.7% and 16.5% respectively for North Sydney Council area.
The major differences between the age structure of St Leonards and North Sydney Council area were:
- A larger percentage of persons aged 85 and over (4.6% compared to 1.7%)
- A larger percentage of persons aged 35 to 39 (12.4% compared to 10.1%)
- A smaller percentage of persons aged 50 to 54 (4.3% compared to 6.2%)
- A smaller percentage of persons aged 5 to 9 (2.4% compared to 4.2%)
Emerging groups
From 1996 to 2021, St Leonards's population increased by 2,101 people (205.4%). This represents an average annual population change of 4.57% per year over the period.
The largest changes in age structure in this area between 1996 and 2021 were in the age groups:
- 35 to 39 (+341 persons)
- 30 to 34 (+280 persons)
- 40 to 44 (+241 persons)
- 25 to 29 (+191 persons)
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