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LEARN MORE ABOUT .idIn 2021, Willoughby City had lower proportion of female children (under 18) and a lower proportion of females aged 60 or older than Hornsby Shire.
The Age Structure of Willoughby City provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Willoughby City'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 Willoughby City'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 | |||||||
|---|---|---|---|---|---|---|---|
| Willoughby City - Total females (Enumerated) | 2021 | 1991 | Change | ||||
| Service age group (years) | Number | % | Hornsby Shire % | Number | % | Hornsby Shire % | 1991 to 2021 |
| Babies and pre-schoolers (0 to 4) | 1,922 | 4.9 | 4.8 | 1,502 | 5.9 | 7.1 | +420 |
| Primary schoolers (5 to 11) | 3,563 | 9.0 | 9.0 | 1,879 | 7.4 | 10.0 | +1,684 |
| Secondary schoolers (12 to 17) | 2,818 | 7.1 | 7.8 | 1,751 | 6.9 | 9.9 | +1,067 |
| Tertiary education and independence (18 to 24) | 2,650 | 6.7 | 7.4 | 3,081 | 12.1 | 10.1 | -431 |
| Young workforce (25 to 34) | 4,942 | 12.5 | 9.6 | 4,435 | 17.4 | 13.2 | +507 |
| Parents and homebuilders (35 to 49) | 9,793 | 24.8 | 22.5 | 5,819 | 22.8 | 23.3 | +3,974 |
| Older workers and pre-retirees (50 to 59) | 4,856 | 12.3 | 13.7 | 2,378 | 9.3 | 9.1 | +2,478 |
| Empty nesters and retirees (60 to 69) | 3,866 | 9.8 | 11.1 | 1,141 | 4.5 | 7.2 | +2,725 |
| Seniors (70 to 84) | 3,715 | 9.4 | 10.7 | 3,076 | 12.1 | 8.2 | +639 |
| Elderly aged (85 and over) | 1,300 | 3.3 | 3.5 | 458 | 1.8 | 2.0 | +842 |
| Total | 39,425 | 100.0 | 100.0 | 25,520 | 100.0 | 100.0 | +13,905 |
Dominant groups
Analysis of the female service age groups of Willoughby City in 2021 compared to Hornsby Shire shows that there was a lower proportion of females in the younger age groups (0 to 17 years) as well as a lower proportion of females in the older age groups (60+ years).
Overall, 21.1% of the female population was aged between 0 and 17, and 22.5% were aged 60 years and over, compared with 21.7% and 25.2% respectively for Hornsby Shire.
The major differences between the female age structure of Willoughby City and Hornsby Shire were:
- A larger percentage of 'Young workforce' (12.5% compared to 9.6%)
- A larger percentage of 'Parents and homebuilders' (24.8% compared to 22.5%)
- A smaller percentage of 'Older workers & pre-retirees' (12.3% compared to 13.7%)
- A smaller percentage of 'Empty nesters and retirees' (9.8% compared to 11.1%)
Emerging groups
From 1991 to 2021, Willoughby City's female population increased by 13,905 people (54.5%). This represents an average annual population change of 1.46% per year over the period.
The largest changes in the female age structure in this area between 1991 and 2021 were in the age groups:
- Parents and homebuilders (35 to 49) (+3,974 females)
- Empty nesters and retirees (60 to 69) (+2,725 females)
- Older workers and pre-retirees (50 to 59) (+2,478 females)
- Primary schoolers (5 to 11) (+1,684 females)
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