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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 1991 was 35 to 39 year olds, increasing by 173 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 females (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Altona North % | Number | % | Altona North % | 1991 to 2021 |
| 0 to 4 | 158 | 6.3 | 7.5 | 113 | 12.1 | 4.6 | +45 |
| 5 to 9 | 197 | 7.9 | 6.5 | 66 | 7.1 | 5.6 | +131 |
| 10 to 14 | 164 | 6.5 | 5.6 | 44 | 4.7 | 6.5 | +120 |
| 15 to 19 | 159 | 6.3 | 4.3 | 56 | 6.0 | 8.2 | +103 |
| 20 to 24 | 114 | 4.5 | 4.5 | 107 | 11.5 | 11.0 | +7 |
| 25 to 29 | 140 | 5.6 | 6.7 | 162 | 17.4 | 7.4 | -22 |
| 30 to 34 | 198 | 7.9 | 8.4 | 113 | 12.1 | 6.1 | +85 |
| 35 to 39 | 255 | 10.2 | 8.3 | 82 | 8.8 | 5.1 | +173 |
| 40 to 44 | 154 | 6.1 | 7.2 | 36 | 3.9 | 6.4 | +118 |
| 45 to 49 | 179 | 7.1 | 5.8 | 44 | 4.7 | 7.5 | +135 |
| 50 to 54 | 178 | 7.1 | 5.5 | 24 | 2.6 | 8.5 | +154 |
| 55 to 59 | 185 | 7.4 | 3.8 | 24 | 2.6 | 7.5 | +161 |
| 60 to 64 | 151 | 6.0 | 4.1 | 16 | 1.7 | 5.7 | +135 |
| 65 to 69 | 101 | 4.0 | 4.1 | 6 | 0.6 | 4.8 | +95 |
| 70 to 74 | 70 | 2.8 | 3.8 | 9 | 1.0 | 2.1 | +61 |
| 75 to 79 | 55 | 2.2 | 4.5 | 6 | 0.6 | 2.0 | +49 |
| 80 to 84 | 30 | 1.2 | 4.3 | 8 | 0.9 | 0.7 | +22 |
| 85 and over | 21 | 0.8 | 5.1 | 17 | 1.8 | 0.2 | +4 |
| Total population | 2,509 | 100.0 | 100.0 | 933 | 100.0 | 100.0 | +1,576 |
Dominant groups
Analysis of the female five year age groups of Seabrook in 2021 compared to Altona North shows that there was a higher proportion of females in the younger age groups (under 15) and a lower proportion of females in the older age groups (65+).
Overall, 20.7% of the female population was aged between 0 and 15, and 11.0% were aged 65 years and over, compared with 19.6% and 21.7% respectively for Altona North.
The major differences between the female age structure of Seabrook and Altona North were:
- A larger percentage of females aged 55 to 59 (7.4% compared to 3.8%)
- A smaller percentage of females aged 85 and over (0.8% compared to 5.1%)
- A smaller percentage of females aged 80 to 84 (1.2% compared to 4.3%)
- A smaller percentage of females aged 75 to 79 (2.2% compared to 4.5%)
Emerging groups
From 1991 to 2021, Seabrook's female population increased by 1,576 people (168.9%). This represents an average annual population change of 3.35% per year over the period.
The largest changes in female age structure in this area between 1991 and 2021 were in the age groups:
- 35 to 39 (+173 females)
- 55 to 59 (+161 females)
- 50 to 54 (+154 females)
- 45 to 49 (+135 females)
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