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LEARN MORE ABOUT .idIn 2021, the largest age group in Seabrook was 35 to 39 year olds. The group that changed the most since 2001 was 30 to 34 year olds, decreasing by 223 people.
The Age Structure of Seabrook provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Seabrook'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 Seabrook'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 | |||||||
|---|---|---|---|---|---|---|---|
| Seabrook - Total persons (Enumerated) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | Hobsons Bay City % | Number | % | Hobsons Bay City % | 2001 to 2021 |
| 0 to 4 | 320 | 6.4 | 6.3 | 493 | 10.3 | 7.0 | -173 |
| 5 to 9 | 403 | 8.1 | 6.4 | 480 | 10.1 | 7.0 | -77 |
| 10 to 14 | 322 | 6.5 | 5.9 | 395 | 8.3 | 6.4 | -73 |
| 15 to 19 | 303 | 6.1 | 4.9 | 274 | 5.7 | 6.0 | +29 |
| 20 to 24 | 247 | 5.0 | 5.0 | 228 | 4.8 | 6.2 | +19 |
| 25 to 29 | 287 | 5.8 | 6.2 | 426 | 8.9 | 7.5 | -139 |
| 30 to 34 | 354 | 7.1 | 7.4 | 577 | 12.1 | 8.6 | -223 |
| 35 to 39 | 488 | 9.8 | 8.1 | 562 | 11.8 | 8.6 | -74 |
| 40 to 44 | 346 | 7.0 | 7.5 | 420 | 8.8 | 8.3 | -74 |
| 45 to 49 | 354 | 7.1 | 7.1 | 304 | 6.4 | 6.8 | +50 |
| 50 to 54 | 341 | 6.9 | 7.0 | 206 | 4.3 | 6.2 | +135 |
| 55 to 59 | 352 | 7.1 | 6.3 | 165 | 3.5 | 4.6 | +187 |
| 60 to 64 | 282 | 5.7 | 5.8 | 96 | 2.0 | 4.1 | +186 |
| 65 to 69 | 208 | 4.2 | 4.7 | 51 | 1.1 | 3.7 | +157 |
| 70 to 74 | 143 | 2.9 | 4.0 | 57 | 1.2 | 3.4 | +86 |
| 75 to 79 | 106 | 2.1 | 2.8 | 18 | 0.4 | 2.8 | +88 |
| 80 to 84 | 64 | 1.3 | 2.1 | 9 | 0.2 | 1.6 | +55 |
| 85 and over | 44 | 0.9 | 2.3 | 9 | 0.2 | 1.3 | +35 |
| Total population | 4,964 | 100.0 | 100.0 | 4,770 | 100.0 | 100.0 | +194 |
Dominant groups
Analysis of the five year age groups of Seabrook in 2021 compared to Hobsons Bay City shows that there was a higher proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).
Overall, 21.1% of the population was aged between 0 and 15, and 11.4% were aged 65 years and over, compared with 18.6% and 16.0% respectively for Hobsons Bay City.
The major differences between the age structure of Seabrook and Hobsons Bay City were:
- A larger percentage of persons aged 5 to 9 (8.1% compared to 6.4%)
- A larger percentage of persons aged 35 to 39 (9.8% compared to 8.1%)
- A larger percentage of persons aged 15 to 19 (6.1% compared to 4.9%)
- A smaller percentage of persons aged 85 and over (0.9% compared to 2.3%)
Emerging groups
From 2001 to 2021, Seabrook's population increased by 194 people (4.1%). This represents an average annual population change of 0.2% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 30 to 34 (-223 persons)
- 55 to 59 (+187 persons)
- 60 to 64 (+186 persons)
- 0 to 4 (-173 persons)
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