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LEARN MORE ABOUT .idIn 2021, the largest age group in Willoughby City was 40 to 44 year olds. The group that changed the most since 1991 was 5 to 9 year olds, increasing by 1,203 people.
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 also an indicator of Willoughby City'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 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 - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| Willoughby City - Total males (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Castle Cove - Middle Cove % | Number | % | Castle Cove - Middle Cove % | 1991 to 2021 |
| 0 to 4 | 2,080 | 5.7 | 3.7 | 1,677 | 6.8 | 5.1 | +403 |
| 5 to 9 | 2,612 | 7.2 | 7.7 | 1,409 | 5.7 | 5.8 | +1,203 |
| 10 to 14 | 2,554 | 7.0 | 9.4 | 1,411 | 5.7 | 6.1 | +1,143 |
| 15 to 19 | 2,160 | 5.9 | 6.9 | 1,612 | 6.6 | 7.8 | +548 |
| 20 to 24 | 1,988 | 5.5 | 6.4 | 2,214 | 9.0 | 8.6 | -226 |
| 25 to 29 | 2,159 | 5.9 | 2.8 | 2,166 | 8.8 | 5.8 | -7 |
| 30 to 34 | 2,349 | 6.4 | 2.3 | 2,121 | 8.6 | 5.3 | +228 |
| 35 to 39 | 2,984 | 8.2 | 3.5 | 1,940 | 7.9 | 5.5 | +1,044 |
| 40 to 44 | 3,032 | 8.3 | 6.6 | 2,002 | 8.2 | 7.5 | +1,030 |
| 45 to 49 | 2,739 | 7.5 | 7.2 | 1,621 | 6.6 | 6.4 | +1,118 |
| 50 to 54 | 2,396 | 6.6 | 8.1 | 1,259 | 5.1 | 6.0 | +1,137 |
| 55 to 59 | 2,146 | 5.9 | 7.4 | 1,036 | 4.2 | 6.0 | +1,110 |
| 60 to 64 | 1,805 | 4.9 | 7.5 | 1,085 | 4.4 | 6.4 | +720 |
| 65 to 69 | 1,558 | 4.3 | 5.8 | 955 | 3.9 | 6.6 | +603 |
| 70 to 74 | 1,460 | 4.0 | 5.0 | 789 | 3.2 | 4.9 | +671 |
| 75 to 79 | 985 | 2.7 | 3.8 | 688 | 2.8 | 3.9 | +297 |
| 80 to 84 | 716 | 2.0 | 2.9 | 394 | 1.6 | 1.9 | +322 |
| 85 and over | 749 | 2.1 | 3.2 | 162 | 0.7 | 0.7 | +587 |
| Total population | 36,472 | 100.0 | 100.0 | 24,541 | 100.0 | 100.0 | +11,931 |
Dominant groups
Analysis of the male five year age groups of Willoughby City in 2021 compared to Castle Cove - Middle Cove shows that there was a lower proportion of males in the younger age groups (under 15) as well as a lower proportion of males in the older age groups (65+).
Overall, 19.9% of the male population was aged between 0 and 15, and 15.0% were aged 65 years and over, compared with 20.7% and 20.6% respectively for Castle Cove - Middle Cove.
The major differences between the male age structure of Willoughby City and Castle Cove - Middle Cove were:
- A larger percentage of males aged 35 to 39 (8.2% compared to 3.5%)
- A larger percentage of males aged 30 to 34 (6.4% compared to 2.3%)
- A larger percentage of males aged 25 to 29 (5.9% compared to 2.8%)
- A smaller percentage of males aged 60 to 64 (4.9% compared to 7.5%)
Emerging groups
From 1991 to 2021, Willoughby City's male population increased by 11,931 people (48.6%). This represents an average annual population change of 1.33% per year over the period.
The largest changes in male age structure in this area between 1991 and 2021 were in the age groups:
- 5 to 9 (+1,203 males)
- 10 to 14 (+1,143 males)
- 50 to 54 (+1,137 males)
- 45 to 49 (+1,118 males)
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