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LEARN MORE ABOUT .idIn 2021, the largest age group in Bacchus Marsh Region was 30 to 34 year olds. The group that changed the most since 2016 was 30 to 34 year olds, increasing by 535 people.
The Age Structure of Bacchus Marsh Region provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Bacchus Marsh Region'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 Bacchus Marsh Region'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 | |||||||
|---|---|---|---|---|---|---|---|
| Bacchus Marsh Region - Total persons (Usual residence) | 2021 | 2016 | Change | ||||
| Five year age groups (years) | Number | % | Moorabool Shire % | Number | % | Moorabool Shire % | 2016 to 2021 |
| 0 to 4 | 1,699 | 6.6 | 6.3 | 1,469 | 6.9 | 6.4 | +230 |
| 5 to 9 | 1,822 | 7.1 | 6.8 | 1,587 | 7.4 | 7.2 | +234 |
| 10 to 14 | 1,825 | 7.1 | 7.0 | 1,403 | 6.6 | 6.7 | +422 |
| 15 to 19 | 1,445 | 5.6 | 5.8 | 1,416 | 6.6 | 6.5 | +28 |
| 20 to 24 | 1,434 | 5.6 | 5.1 | 1,246 | 5.8 | 5.4 | +188 |
| 25 to 29 | 1,758 | 6.8 | 6.0 | 1,276 | 6.0 | 5.2 | +481 |
| 30 to 34 | 1,890 | 7.3 | 6.7 | 1,354 | 6.4 | 5.8 | +535 |
| 35 to 39 | 1,873 | 7.3 | 6.9 | 1,428 | 6.7 | 6.4 | +445 |
| 40 to 44 | 1,696 | 6.6 | 6.7 | 1,467 | 6.9 | 6.9 | +228 |
| 45 to 49 | 1,625 | 6.3 | 6.6 | 1,575 | 7.4 | 7.5 | +50 |
| 50 to 54 | 1,669 | 6.5 | 6.9 | 1,357 | 6.4 | 7.4 | +312 |
| 55 to 59 | 1,437 | 5.6 | 6.4 | 1,332 | 6.2 | 6.8 | +105 |
| 60 to 64 | 1,361 | 5.3 | 5.9 | 1,242 | 5.8 | 6.2 | +118 |
| 65 to 69 | 1,296 | 5.0 | 5.4 | 1,167 | 5.5 | 5.9 | +128 |
| 70 to 74 | 1,216 | 4.7 | 5.0 | 839 | 3.9 | 4.2 | +377 |
| 75 to 79 | 798 | 3.1 | 3.2 | 489 | 2.3 | 2.5 | +308 |
| 80 to 84 | 439 | 1.7 | 1.7 | 313 | 1.5 | 1.5 | +125 |
| 85 and over | 445 | 1.7 | 1.7 | 351 | 1.6 | 1.5 | +93 |
| Total population | 25,728 | 100.0 | 100.0 | 21,320 | 100.0 | 100.0 | +4,407 |
Dominant groups
Analysis of the five year age groups of Bacchus Marsh Region in 2021 compared to Moorabool Shire 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, 20.8% of the population was aged between 0 and 15, and 16.3% were aged 65 years and over, compared with 20.1% and 17.0% respectively for Moorabool Shire.
The major differences between the age structure of Bacchus Marsh Region and Moorabool Shire were:
- A larger percentage of persons aged 25 to 29 (6.8% compared to 6.0%)
- A larger percentage of persons aged 30 to 34 (7.3% compared to 6.7%)
- A smaller percentage of persons aged 55 to 59 (5.6% compared to 6.4%)
- A smaller percentage of persons aged 60 to 64 (5.3% compared to 5.9%)
Emerging groups
From 2016 to 2021, Bacchus Marsh Region's population increased by 4,408 people (20.7%). This represents an average annual population change of 3.83% per year over the period.
The largest changes in age structure in this area between 2016 and 2021 were in the age groups:
- 30 to 34 (+535 persons)
- 25 to 29 (+481 persons)
- 35 to 39 (+445 persons)
- 10 to 14 (+422 persons)
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