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LEARN MORE ABOUT .idIn 2021, the largest age group in Thomastown was 30 to 34 year olds. The group that changed the most since 1991 was 15 to 19 year olds, decreasing by 1,297 people.
The Age Structure of Thomastown provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Thomastown'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 Thomastown'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 | |||||||
|---|---|---|---|---|---|---|---|
| Thomastown - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Lalor % | Number | % | Lalor % | 1991 to 2021 |
| 0 to 4 | 1,114 | 5.6 | 6.4 | 1,579 | 6.9 | 6.4 | -465 |
| 5 to 9 | 1,021 | 5.1 | 6.5 | 1,731 | 7.6 | 7.2 | -710 |
| 10 to 14 | 992 | 5.0 | 5.5 | 1,977 | 8.6 | 8.6 | -985 |
| 15 to 19 | 989 | 5.0 | 5.2 | 2,285 | 10.0 | 10.5 | -1,297 |
| 20 to 24 | 1,326 | 6.6 | 6.7 | 2,297 | 10.1 | 10.3 | -972 |
| 25 to 29 | 1,576 | 7.9 | 7.2 | 1,787 | 7.8 | 7.9 | -211 |
| 30 to 34 | 1,596 | 8.0 | 7.8 | 1,761 | 7.7 | 6.7 | -166 |
| 35 to 39 | 1,427 | 7.1 | 7.9 | 1,686 | 7.4 | 6.6 | -259 |
| 40 to 44 | 1,209 | 6.1 | 6.5 | 1,777 | 7.8 | 8.3 | -568 |
| 45 to 49 | 1,117 | 5.6 | 6.1 | 1,470 | 6.4 | 6.5 | -354 |
| 50 to 54 | 1,091 | 5.5 | 5.8 | 1,298 | 5.7 | 6.0 | -208 |
| 55 to 59 | 1,085 | 5.4 | 5.1 | 1,142 | 5.0 | 5.3 | -58 |
| 60 to 64 | 1,111 | 5.6 | 5.0 | 810 | 3.5 | 3.8 | +300 |
| 65 to 69 | 1,083 | 5.4 | 4.6 | 562 | 2.5 | 2.6 | +521 |
| 70 to 74 | 1,156 | 5.8 | 4.5 | 299 | 1.3 | 1.5 | +857 |
| 75 to 79 | 895 | 4.5 | 3.6 | 192 | 0.8 | 0.9 | +703 |
| 80 to 84 | 654 | 3.3 | 2.9 | 129 | 0.6 | 0.5 | +525 |
| 85 and over | 522 | 2.6 | 2.7 | 72 | 0.3 | 0.3 | +449 |
| Total population | 19,964 | 100.0 | 100.0 | 22,862 | 100.0 | 100.0 | -2,898 |
Dominant groups
Analysis of the five year age groups of Thomastown in 2021 compared to Lalor shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 15.7% of the population was aged between 0 and 15, and 21.6% were aged 65 years and over, compared with 18.4% and 18.3% respectively for Lalor.
The major differences between the age structure of Thomastown and Lalor were:
- A larger percentage of persons aged 70 to 74 (5.8% compared to 4.5%)
- A larger percentage of persons aged 65 to 69 (5.4% compared to 4.6%)
- A larger percentage of persons aged 75 to 79 (4.5% compared to 3.6%)
- A smaller percentage of persons aged 5 to 9 (5.1% compared to 6.5%)
Emerging groups
From 1991 to 2021, Thomastown's population decreased by 2,898 people (12.7%). This represents an average annual population change of -0.45% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 15 to 19 (-1,297 persons)
- 10 to 14 (-985 persons)
- 20 to 24 (-972 persons)
- 70 to 74 (+857 persons)
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