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LEARN MORE ABOUT .idIn 2021, the largest age group in Willoughby was 45 to 49 year olds. The group that changed the most since 1991 was 25 to 29 year olds, decreasing by 267 people.
The Age Structure of Willoughby 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'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'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 - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Willoughby City % | Number | % | Willoughby City % | 1991 to 2021 |
| 0 to 4 | 426 | 6.1 | 5.3 | 390 | 6.9 | 6.2 | +35 |
| 5 to 9 | 535 | 7.6 | 6.7 | 281 | 5.0 | 5.4 | +253 |
| 10 to 14 | 508 | 7.3 | 6.7 | 277 | 4.9 | 5.4 | +231 |
| 15 to 19 | 460 | 6.6 | 5.5 | 350 | 6.2 | 6.5 | +110 |
| 20 to 24 | 292 | 4.2 | 5.2 | 478 | 8.5 | 8.8 | -187 |
| 25 to 29 | 261 | 3.7 | 5.8 | 527 | 9.4 | 8.6 | -267 |
| 30 to 34 | 354 | 5.1 | 6.7 | 591 | 10.5 | 8.5 | -237 |
| 35 to 39 | 571 | 8.2 | 8.4 | 427 | 7.6 | 7.9 | +143 |
| 40 to 44 | 585 | 8.4 | 8.4 | 408 | 7.2 | 8.1 | +177 |
| 45 to 49 | 593 | 8.5 | 7.7 | 343 | 6.1 | 6.2 | +249 |
| 50 to 54 | 532 | 7.6 | 6.5 | 271 | 4.8 | 4.9 | +260 |
| 55 to 59 | 434 | 6.2 | 5.8 | 249 | 4.4 | 4.2 | +184 |
| 60 to 64 | 345 | 4.9 | 5.0 | 213 | 3.8 | 4.3 | +132 |
| 65 to 69 | 292 | 4.2 | 4.5 | 184 | 3.3 | 4.2 | +107 |
| 70 to 74 | 246 | 3.5 | 4.1 | 186 | 3.3 | 3.9 | +59 |
| 75 to 79 | 204 | 2.9 | 2.8 | 170 | 3.0 | 3.6 | +34 |
| 80 to 84 | 145 | 2.1 | 2.1 | 127 | 2.3 | 2.2 | +17 |
| 85 and over | 222 | 3.2 | 2.7 | 146 | 2.6 | 1.2 | +76 |
| Total population | 7,005 | 100.0 | 100.0 | 5,628 | 100.0 | 100.0 | +1,377 |
Dominant groups
Analysis of the five year age groups of Willoughby in 2021 compared to Willoughby City shows that there was a higher proportion of people in the younger age groups (under 15) and a similar proportion of people in the older age groups (65+).
Overall, 21.0% of the population was aged between 0 and 15, and 15.8% were aged 65 years and over, compared with 18.7% and 16.3% respectively for Willoughby City.
The major differences between the age structure of Willoughby and Willoughby City were:
- A larger percentage of persons aged 15 to 19 (6.6% compared to 5.5%)
- A smaller percentage of persons aged 25 to 29 (3.7% compared to 5.8%)
- A smaller percentage of persons aged 30 to 34 (5.1% compared to 6.7%)
- A smaller percentage of persons aged 20 to 24 (4.2% compared to 5.2%)
Emerging groups
From 1991 to 2021, Willoughby's population increased by 1,377 people (24.5%). This represents an average annual population change of 0.73% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 25 to 29 (-267 persons)
- 50 to 54 (+260 persons)
- 5 to 9 (+253 persons)
- 45 to 49 (+249 persons)
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