Bayside Council area
Five year age groups
In 2021, the largest age group in Bayside Council area was 30 to 34 year olds. The group that changed the most since 2011 was 30 to 34 year olds, increasing by 6,863 people.
The Age Structure of Bayside Council area provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Bayside Council area'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 Bayside Council area'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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Bayside Council area - Total persons (Enumerated) | 2021 | 2011 | Change | |||||
| Five year age groups (years) | Number | % | Greater Sydney % | Number | % | Greater Sydney % | 2011 to 2021 | |
| 0 to 4 | 9,971 | 5.7 | 6.0 | 9,012 | 6.6 | 6.8 | +959 | 2001 |
| 5 to 9 | 8,551 | 4.9 | 6.3 | 7,733 | 5.7 | 6.3 | +818 | 2002 |
| 10 to 14 | 7,933 | 4.5 | 6.2 | 7,193 | 5.3 | 6.1 | +740 | 2003 |
| 15 to 19 | 7,807 | 4.5 | 5.6 | 7,254 | 5.3 | 6.3 | +553 | 2004 |
| 20 to 24 | 13,652 | 7.8 | 6.5 | 9,129 | 6.7 | 7.0 | +4,523 | 2005 |
| 25 to 29 | 18,164 | 10.4 | 7.5 | 11,941 | 8.7 | 7.8 | +6,223 | 2006 |
| 30 to 34 | 18,355 | 10.5 | 8.0 | 11,492 | 8.4 | 7.7 | +6,863 | 2007 |
| 35 to 39 | 15,028 | 8.6 | 7.9 | 10,889 | 8.0 | 7.6 | +4,139 | 2008 |
| 40 to 44 | 11,582 | 6.6 | 7.0 | 9,954 | 7.3 | 7.3 | +1,628 | 2009 |
| 45 to 49 | 10,788 | 6.2 | 6.6 | 9,162 | 6.7 | 7.0 | +1,626 | 2010 |
| 50 to 54 | 9,940 | 5.7 | 6.2 | 8,331 | 6.1 | 6.6 | +1,609 | 2011 |
| 55 to 59 | 9,336 | 5.3 | 5.8 | 7,438 | 5.4 | 5.7 | +1,898 | 2012 |
| 60 to 64 | 8,130 | 4.6 | 5.3 | 6,993 | 5.1 | 5.1 | +1,137 | 2013 |
| 65 to 69 | 7,066 | 4.0 | 4.5 | 5,554 | 4.1 | 3.8 | +1,512 | 2014 |
| 70 to 74 | 6,373 | 3.6 | 3.9 | 4,660 | 3.4 | 2.9 | +1,713 | 2015 |
| 75 to 79 | 4,836 | 2.8 | 2.8 | 3,882 | 2.8 | 2.3 | +954 | 2016 |
| 80 to 84 | 3,783 | 2.2 | 2.0 | 3,109 | 2.3 | 1.9 | +674 | 2017 |
| 85 and over | 3,717 | 2.1 | 2.0 | 3,067 | 2.2 | 1.8 | +650 | 2018 |
| Total population | 175,012 | 100.0 | 100.0 | 136,793 | 100.0 | 100.0 | +38,219 | |
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 Bayside Council area in 2021 compared to Greater Sydney shows that there was a lower proportion of people in the younger age groups (under 15) and a similar proportion of people in the older age groups (65+).
Overall, 15.1% of the population was aged between 0 and 15, and 14.7% were aged 65 years and over, compared with 18.4% and 15.2% respectively for Greater Sydney.
The major differences between the age structure of Bayside Council area and Greater Sydney were:
- A larger percentage of persons aged 25 to 29 (10.4% compared to 7.5%)
- A larger percentage of persons aged 30 to 34 (10.5% compared to 8.0%)
- A smaller percentage of persons aged 10 to 14 (4.5% compared to 6.2%)
- A smaller percentage of persons aged 5 to 9 (4.9% compared to 6.3%)
Emerging groups
From 2011 to 2021, Bayside Council area's population increased by 38,219 people (27.9%). This represents an average annual population change of 2.49% per year over the period.
The largest changes in age structure in this area between 2011 and 2021 were in the age groups:
- 30 to 34 (+6,863 persons)
- 25 to 29 (+6,223 persons)
- 20 to 24 (+4,523 persons)
- 35 to 39 (+4,139 persons)