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LEARN MORE ABOUT .idIn 2021, the largest age group in Thornbury was 30 to 34 year olds. The group that changed the most since 2001 was 50 to 54 year olds, increasing by 444 people.
The Age Structure of Thornbury provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Thornbury'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 Thornbury'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 | |||||||
|---|---|---|---|---|---|---|---|
| Thornbury - Total persons (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | Reservoir (Oakhill) % | Number | % | Reservoir (Oakhill) % | 2001 to 2021 |
| 0 to 4 | 976 | 5.1 | 5.4 | 941 | 5.6 | 6.2 | +35 |
| 5 to 9 | 943 | 5.0 | 4.8 | 795 | 4.8 | 6.4 | +147 |
| 10 to 14 | 883 | 4.6 | 4.4 | 649 | 3.9 | 5.1 | +234 |
| 15 to 19 | 825 | 4.3 | 4.5 | 745 | 4.5 | 5.9 | +79 |
| 20 to 24 | 1,030 | 5.4 | 6.7 | 1,405 | 8.4 | 6.5 | -376 |
| 25 to 29 | 1,745 | 9.2 | 9.1 | 1,815 | 10.9 | 7.5 | -70 |
| 30 to 34 | 2,105 | 11.1 | 9.8 | 1,901 | 11.4 | 7.6 | +203 |
| 35 to 39 | 1,851 | 9.7 | 8.4 | 1,495 | 9.0 | 7.3 | +356 |
| 40 to 44 | 1,522 | 8.0 | 6.3 | 1,284 | 7.7 | 7.1 | +237 |
| 45 to 49 | 1,407 | 7.4 | 6.0 | 1,027 | 6.2 | 6.1 | +379 |
| 50 to 54 | 1,279 | 6.7 | 6.4 | 835 | 5.0 | 5.1 | +444 |
| 55 to 59 | 1,025 | 5.4 | 5.3 | 642 | 3.9 | 4.1 | +383 |
| 60 to 64 | 831 | 4.4 | 4.9 | 676 | 4.1 | 4.2 | +154 |
| 65 to 69 | 697 | 3.7 | 4.5 | 669 | 4.0 | 4.5 | +27 |
| 70 to 74 | 534 | 2.8 | 3.9 | 602 | 3.6 | 5.4 | -69 |
| 75 to 79 | 412 | 2.2 | 2.9 | 560 | 3.4 | 5.1 | -148 |
| 80 to 84 | 432 | 2.3 | 2.7 | 344 | 2.1 | 3.3 | +88 |
| 85 and over | 495 | 2.6 | 4.1 | 264 | 1.6 | 2.7 | +230 |
| Total population | 18,992 | 100.0 | 100.0 | 16,657 | 100.0 | 100.0 | +2,334 |
Dominant groups
Analysis of the five year age groups of Thornbury in 2021 compared to Reservoir (Oakhill) shows that there was a similar proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).
Overall, 14.8% of the population was aged between 0 and 15, and 13.5% were aged 65 years and over, compared with 14.6% and 18.1% respectively for Reservoir (Oakhill).
The major differences between the age structure of Thornbury and Reservoir (Oakhill) were:
- A larger percentage of persons aged 40 to 44 (8.0% compared to 6.3%)
- A larger percentage of persons aged 45 to 49 (7.4% compared to 6.0%)
- A larger percentage of persons aged 35 to 39 (9.7% compared to 8.4%)
- A smaller percentage of persons aged 85 and over (2.6% compared to 4.1%)
Emerging groups
From 2001 to 2021, Thornbury's population increased by 2,335 people (14.0%). This represents an average annual population change of 0.66% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 50 to 54 (+444 persons)
- 55 to 59 (+383 persons)
- 45 to 49 (+379 persons)
- 20 to 24 (-376 persons)
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