City of Brimbank
Five year age groups
In 2021, the largest age group in the City of Brimbank was 25 to 29 year olds. The group that changed the most since 2011 was 70 to 74 year olds, increasing by 3,190 people.
The Age Structure of the City of Brimbank 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 Brimbank'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 Brimbank'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 Brimbank - Total persons (Enumerated) | 2021 | 2011 | Change | |||||
| Five year age groups (years) | Number | % | Deer Park % | Number | % | Deer Park % | 2011 to 2021 | |
| 0 to 4 | 10,997 | 5.7 | 6.6 | 11,951 | 6.6 | 7.6 | -954 | 2001 |
| 5 to 9 | 11,724 | 6.0 | 7.4 | 11,300 | 6.2 | 6.2 | +424 | 2002 |
| 10 to 14 | 11,046 | 5.7 | 6.3 | 11,503 | 6.3 | 6.1 | -457 | 2003 |
| 15 to 19 | 11,112 | 5.7 | 5.3 | 12,673 | 7.0 | 6.1 | -1,561 | 2004 |
| 20 to 24 | 13,342 | 6.9 | 6.1 | 14,295 | 7.9 | 7.9 | -953 | 2005 |
| 25 to 29 | 15,664 | 8.1 | 8.4 | 15,290 | 8.4 | 10.1 | +374 | 2006 |
| 30 to 34 | 14,796 | 7.6 | 8.5 | 13,578 | 7.5 | 9.1 | +1,218 | 2007 |
| 35 to 39 | 14,024 | 7.2 | 8.6 | 13,092 | 7.2 | 7.6 | +932 | 2008 |
| 40 to 44 | 12,387 | 6.4 | 7.0 | 12,990 | 7.1 | 6.6 | -603 | 2009 |
| 45 to 49 | 12,261 | 6.3 | 6.0 | 12,187 | 6.7 | 5.7 | +74 | 2010 |
| 50 to 54 | 12,298 | 6.3 | 5.6 | 11,858 | 6.5 | 5.4 | +440 | 2011 |
| 55 to 59 | 11,830 | 6.1 | 5.1 | 10,843 | 6.0 | 5.9 | +987 | 2012 |
| 60 to 64 | 11,203 | 5.8 | 4.7 | 9,633 | 5.3 | 6.1 | +1,570 | 2013 |
| 65 to 69 | 9,793 | 5.0 | 4.7 | 6,812 | 3.7 | 3.6 | +2,981 | 2014 |
| 70 to 74 | 8,377 | 4.3 | 4.3 | 5,187 | 2.9 | 2.7 | +3,190 | 2015 |
| 75 to 79 | 5,762 | 3.0 | 2.6 | 3,859 | 2.1 | 1.5 | +1,903 | 2016 |
| 80 to 84 | 3,885 | 2.0 | 1.8 | 2,717 | 1.5 | 1.1 | +1,168 | 2017 |
| 85 and over | 3,673 | 1.9 | 0.9 | 2,193 | 1.2 | 0.8 | +1,480 | 2018 |
| Total population | 194,174 | 100.0 | 100.0 | 181,961 | 100.0 | 100.0 | +12,213 | |
Source: Australian Bureau of Statistics, Census of Population and Housing (opens a new window) 2011 and 2021. Compiled and presented by .id (opens a new window)(informed decisions).
(Enumerated 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 Brimbank in 2021 compared to Deer Park 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, 17.4% of the population was aged between 0 and 15, and 16.2% were aged 65 years and over, compared with 20.4% and 14.3% respectively for Deer Park.
The major differences between the age structure of the City of Brimbank and Deer Park were:
- A larger percentage of persons aged 60 to 64 (5.8% compared to 4.7%)
- A larger percentage of persons aged 55 to 59 (6.1% compared to 5.1%)
- A smaller percentage of persons aged 5 to 9 (6.0% compared to 7.4%)
- A smaller percentage of persons aged 35 to 39 (7.2% compared to 8.6%)
Emerging groups
From 2011 to 2021, City of Brimbank's population increased by 12,213 people (6.7%). This represents an average annual population change of 0.65% per year over the period.
The largest changes in age structure in this area between 2011 and 2021 were in the age groups:
- 70 to 74 (+3,190 persons)
- 65 to 69 (+2,981 persons)
- 75 to 79 (+1,903 persons)
- 60 to 64 (+1,570 persons)