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LEARN MORE ABOUT .idIn 2021, the largest age group in Williamstown was 55 to 59 year olds. The group that changed the most since 2001 was 55 to 59 year olds, increasing by 225 people.
The Age Structure of Williamstown provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Williamstown'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 Williamstown'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 | |||||||
|---|---|---|---|---|---|---|---|
| Williamstown - Total males (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | Hobsons Bay City % | Number | % | Hobsons Bay City % | 2001 to 2021 |
| 0 to 4 | 264 | 4.6 | 6.8 | 331 | 7.0 | 7.4 | -67 |
| 5 to 9 | 376 | 6.6 | 6.6 | 325 | 6.9 | 7.2 | +50 |
| 10 to 14 | 481 | 8.4 | 6.0 | 266 | 5.6 | 6.6 | +214 |
| 15 to 19 | 398 | 7.0 | 5.1 | 248 | 5.2 | 6.1 | +149 |
| 20 to 24 | 317 | 5.6 | 5.3 | 242 | 5.1 | 6.2 | +74 |
| 25 to 29 | 204 | 3.6 | 6.4 | 260 | 5.5 | 7.4 | -56 |
| 30 to 34 | 222 | 3.9 | 7.3 | 333 | 7.0 | 8.3 | -112 |
| 35 to 39 | 262 | 4.6 | 8.1 | 423 | 8.9 | 8.6 | -161 |
| 40 to 44 | 369 | 6.5 | 7.5 | 473 | 10.0 | 8.4 | -104 |
| 45 to 49 | 428 | 7.5 | 7.1 | 412 | 8.7 | 6.9 | +15 |
| 50 to 54 | 480 | 8.4 | 6.9 | 380 | 8.0 | 6.3 | +100 |
| 55 to 59 | 496 | 8.7 | 6.4 | 270 | 5.7 | 4.8 | +225 |
| 60 to 64 | 407 | 7.1 | 5.7 | 195 | 4.1 | 4.1 | +211 |
| 65 to 69 | 363 | 6.4 | 4.7 | 144 | 3.0 | 3.6 | +219 |
| 70 to 74 | 289 | 5.1 | 3.8 | 153 | 3.2 | 3.3 | +135 |
| 75 to 79 | 174 | 3.1 | 2.6 | 116 | 2.4 | 2.5 | +58 |
| 80 to 84 | 91 | 1.6 | 1.9 | 93 | 2.0 | 1.3 | -2 |
| 85 and over | 79 | 1.4 | 1.8 | 65 | 1.4 | 0.8 | +13 |
| Total population | 5,700 | 100.0 | 100.0 | 4,737 | 100.0 | 100.0 | +962 |
Dominant groups
Analysis of the male five year age groups of Williamstown in 2021 compared to Hobsons Bay City shows that there was a similar proportion of males in the younger age groups (under 15) and a higher proportion of males in the older age groups (65+).
Overall, 19.7% of the male population was aged between 0 and 15, and 17.5% were aged 65 years and over, compared with 19.4% and 14.9% respectively for Hobsons Bay City.
The major differences between the male age structure of Williamstown and Hobsons Bay City were:
- A larger percentage of males aged 10 to 14 (8.4% compared to 6.0%)
- A smaller percentage of males aged 35 to 39 (4.6% compared to 8.1%)
- A smaller percentage of males aged 30 to 34 (3.9% compared to 7.3%)
- A smaller percentage of males aged 25 to 29 (3.6% compared to 6.4%)
Emerging groups
From 2001 to 2021, Williamstown's male population increased by 963 people (20.3%). This represents an average annual population change of 0.93% per year over the period.
The largest changes in male age structure in this area between 2001 and 2021 were in the age groups:
- 55 to 59 (+225 males)
- 65 to 69 (+219 males)
- 10 to 14 (+214 males)
- 60 to 64 (+211 males)
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