City of Casey
Five year age groups
In 2021, the largest age group in the City of Casey was 35 to 39 year olds. The group that changed the most since 2001 was 35 to 39 year olds, increasing by 15,704 people.
The Age Structure of the City of Casey provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the City of Casey'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 the City of Casey's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.
Derived from the Census question:
'What is the person's date of birth or age?'
Total population
| Age structure - Five year age groups | ||||||||
|---|---|---|---|---|---|---|---|---|
| City of Casey - Total persons (Usual residence) | 2021 | 2001 | Change | |||||
| Five year age groups (years) | Number | % | City of Melton % | Number | % | City of Melton % | 2001 to 2021 | |
| 0 to 4 | 27,841 | 7.6 | 8.1 | 15,453 | 8.7 | 8.2 | +12,388 | 2001 |
| 5 to 9 | 28,849 | 7.9 | 8.5 | 16,573 | 9.4 | 8.6 | +12,276 | 2002 |
| 10 to 14 | 26,361 | 7.2 | 7.7 | 14,788 | 8.3 | 8.7 | +11,573 | 2003 |
| 15 to 19 | 23,162 | 6.3 | 6.5 | 13,187 | 7.4 | 8.3 | +9,975 | 2004 |
| 20 to 24 | 24,309 | 6.7 | 6.2 | 11,147 | 6.3 | 7.5 | +13,162 | 2005 |
| 25 to 29 | 26,322 | 7.2 | 7.0 | 12,729 | 7.2 | 8.5 | +13,593 | 2006 |
| 30 to 34 | 29,360 | 8.0 | 8.8 | 15,711 | 8.9 | 8.4 | +13,649 | 2007 |
| 35 to 39 | 31,628 | 8.7 | 9.1 | 15,924 | 9.0 | 7.9 | +15,704 | 2008 |
| 40 to 44 | 26,374 | 7.2 | 7.9 | 14,776 | 8.3 | 7.9 | +11,598 | 2009 |
| 45 to 49 | 23,453 | 6.4 | 6.9 | 12,301 | 6.9 | 7.8 | +11,152 | 2010 |
| 50 to 54 | 21,803 | 6.0 | 5.6 | 10,131 | 5.7 | 6.8 | +11,672 | 2011 |
| 55 to 59 | 19,457 | 5.3 | 4.6 | 7,003 | 4.0 | 3.9 | +12,454 | 2012 |
| 60 to 64 | 16,748 | 4.6 | 3.9 | 5,130 | 2.9 | 2.4 | +11,618 | 2013 |
| 65 to 69 | 13,197 | 3.6 | 3.4 | 4,013 | 2.3 | 1.6 | +9,184 | 2014 |
| 70 to 74 | 10,463 | 2.9 | 2.6 | 3,387 | 1.9 | 1.4 | +7,076 | 2015 |
| 75 to 79 | 7,110 | 1.9 | 1.5 | 2,442 | 1.4 | 1.0 | +4,668 | 2016 |
| 80 to 84 | 4,605 | 1.3 | 0.9 | 1,412 | 0.8 | 0.6 | +3,193 | 2017 |
| 85 and over | 4,207 | 1.2 | 0.6 | 1,042 | 0.6 | 0.4 | +3,165 | 2018 |
| Total population | 365,249 | 100.0 | 100.0 | 177,149 | 100.0 | 100.0 | +188,100 | |
Source: Australian Bureau of Statistics, Census of Population and Housing (opens a new window) 2001 and 2021. Compiled and presented by .id (opens a new window)(informed decisions).
(Usual residence data)
Compiled and presented in profile.id by .id (informed decisions).
Compiled and presented in profile.id by .id (informed decisions).
Dominant groups
Analysis of the five year age groups of the City of Casey in 2021 compared to City of Melton 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, 22.7% of the population was aged between 0 and 15, and 10.8% were aged 65 years and over, compared with 24.4% and 9.1% respectively for City of Melton.
The major differences between the age structure of the City of Casey and City of Melton were:
- A larger percentage of persons aged 55 to 59 (5.3% compared to 4.6%)
- A larger percentage of persons aged 60 to 64 (4.6% compared to 3.9%)
- A smaller percentage of persons aged 30 to 34 (8.0% compared to 8.8%)
- A smaller percentage of persons aged 40 to 44 (7.2% compared to 7.9%)
Emerging groups
From 2001 to 2021, City of Casey's population increased by 188,100 people (106.2%). This represents an average annual population change of 3.68% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 35 to 39 (+15,704 persons)
- 30 to 34 (+13,649 persons)
- 25 to 29 (+13,593 persons)
- 20 to 24 (+13,162 persons)