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LEARN MORE ABOUT .idIn 2021, the largest age group in Baldivis (South) was 5 to 9 year olds. The group that changed the most since 2016 was 10 to 14 year olds, increasing by 587 people.
The Age Structure of Baldivis (South) provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Baldivis (South)'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 Baldivis (South)'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 | |||||||
|---|---|---|---|---|---|---|---|
| Baldivis (South) - Total persons (Usual residence) | 2021 | 2016 | Change | ||||
| Five year age groups (years) | Number | % | City of Rockingham % | Number | % | City of Rockingham % | 2016 to 2021 |
| 0 to 4 | 2,245 | 8.5 | 6.7 | 2,362 | 10.1 | 7.5 | -118 |
| 5 to 9 | 2,505 | 9.5 | 7.3 | 2,252 | 9.6 | 7.9 | +253 |
| 10 to 14 | 2,395 | 9.1 | 7.6 | 1,807 | 7.7 | 6.9 | +587 |
| 15 to 19 | 1,823 | 6.9 | 6.5 | 1,487 | 6.3 | 6.6 | +336 |
| 20 to 24 | 1,447 | 5.5 | 6.0 | 1,608 | 6.9 | 6.8 | -162 |
| 25 to 29 | 1,723 | 6.5 | 6.4 | 2,161 | 9.2 | 7.2 | -438 |
| 30 to 34 | 2,332 | 8.8 | 7.1 | 2,197 | 9.4 | 7.4 | +135 |
| 35 to 39 | 2,319 | 8.8 | 7.1 | 1,867 | 8.0 | 6.7 | +451 |
| 40 to 44 | 1,970 | 7.5 | 6.4 | 1,758 | 7.5 | 7.1 | +211 |
| 45 to 49 | 1,750 | 6.6 | 6.6 | 1,597 | 6.8 | 7.1 | +153 |
| 50 to 54 | 1,523 | 5.8 | 6.6 | 1,227 | 5.2 | 6.7 | +296 |
| 55 to 59 | 1,214 | 4.6 | 6.2 | 858 | 3.7 | 5.5 | +356 |
| 60 to 64 | 917 | 3.5 | 5.3 | 709 | 3.0 | 4.5 | +207 |
| 65 to 69 | 743 | 2.8 | 4.3 | 619 | 2.6 | 3.9 | +123 |
| 70 to 74 | 653 | 2.5 | 3.7 | 491 | 2.1 | 3.1 | +161 |
| 75 to 79 | 506 | 1.9 | 2.8 | 257 | 1.1 | 2.3 | +249 |
| 80 to 84 | 250 | 0.9 | 1.8 | 130 | 0.6 | 1.6 | +120 |
| 85 and over | 126 | 0.5 | 1.5 | 68 | 0.3 | 1.4 | +57 |
| Total population | 26,441 | 100.0 | 100.0 | 23,464 | 100.0 | 100.0 | +2,977 |
Dominant groups
Analysis of the five year age groups of Baldivis (South) in 2021 compared to the City of Rockingham 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, 27.0% of the population was aged between 0 and 15, and 8.6% were aged 65 years and over, compared with 21.7% and 14.2% respectively for the City of Rockingham.
The major differences between the age structure of Baldivis (South) and the City of Rockingham were:
- A larger percentage of persons aged 5 to 9 (9.5% compared to 7.3%)
- A larger percentage of persons aged 0 to 4 (8.5% compared to 6.7%)
- A larger percentage of persons aged 30 to 34 (8.8% compared to 7.1%)
- A smaller percentage of persons aged 60 to 64 (3.5% compared to 5.3%)
Emerging groups
From 2016 to 2021, Baldivis (South)'s population increased by 2,977 people (12.7%). This represents an average annual population change of 2.42% per year over the period.
The largest changes in age structure in this area between 2016 and 2021 were in the age groups:
- 10 to 14 (+587 persons)
- 35 to 39 (+451 persons)
- 25 to 29 (-438 persons)
- 55 to 59 (+356 persons)
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