Mountains District
Five year age groups
In 2021, the largest age group in Mountains District was 50 to 54 year olds. The group that changed the most since 2016 was 45 to 49 year olds, decreasing by 88 people.
The Age Structure of Mountains District provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Mountains District'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 Mountains District'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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Mountains District - Total persons (Usual residence) | 2021 | 2016 | Change | |||||
| Five year age groups (years) | Number | % | Toukley District % | Number | % | Toukley District % | 2016 to 2021 | |
| 0 to 4 | 158 | 4.1 | 5.5 | 163 | 4.2 | 5.6 | -5 | 2001 |
| 5 to 9 | 182 | 4.7 | 5.3 | 203 | 5.3 | 5.2 | -22 | 2002 |
| 10 to 14 | 194 | 5.1 | 5.3 | 254 | 6.6 | 4.6 | -61 | 2003 |
| 15 to 19 | 222 | 5.8 | 4.6 | 237 | 6.2 | 4.7 | -16 | 2004 |
| 20 to 24 | 207 | 5.4 | 5.0 | 179 | 4.7 | 5.4 | +27 | 2005 |
| 25 to 29 | 180 | 4.7 | 5.7 | 175 | 4.6 | 5.0 | +4 | 2006 |
| 30 to 34 | 171 | 4.5 | 5.1 | 182 | 4.7 | 5.2 | -11 | 2007 |
| 35 to 39 | 237 | 6.2 | 5.5 | 171 | 4.5 | 4.8 | +65 | 2008 |
| 40 to 44 | 203 | 5.3 | 5.0 | 245 | 6.4 | 5.2 | -43 | 2009 |
| 45 to 49 | 260 | 6.8 | 5.5 | 347 | 9.0 | 5.8 | -88 | 2010 |
| 50 to 54 | 355 | 9.2 | 6.2 | 348 | 9.0 | 5.9 | +7 | 2011 |
| 55 to 59 | 343 | 8.9 | 6.5 | 336 | 8.7 | 7.2 | +7 | 2012 |
| 60 to 64 | 335 | 8.7 | 7.1 | 286 | 7.4 | 7.1 | +49 | 2013 |
| 65 to 69 | 280 | 7.3 | 7.0 | 259 | 6.7 | 7.4 | +20 | 2014 |
| 70 to 74 | 207 | 5.4 | 6.8 | 206 | 5.4 | 6.1 | +1 | 2015 |
| 75 to 79 | 162 | 4.2 | 5.4 | 126 | 3.3 | 5.3 | +36 | 2016 |
| 80 to 84 | 89 | 2.3 | 4.0 | 75 | 2.0 | 4.3 | +14 | 2017 |
| 85 and over | 56 | 1.5 | 4.5 | 48 | 1.2 | 5.0 | +8 | 2018 |
| Total population | 3,841 | 100.0 | 100.0 | 3,849 | 100.0 | 100.0 | -8 | |
Source: Australian Bureau of Statistics, Census of Population and Housing (opens a new window) 2016 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 Mountains District in 2021 compared to Toukley District shows that there was a lower proportion of people in the younger age groups (under 15) as well as a lower proportion of people in the older age groups (65+).
Overall, 13.9% of the population was aged between 0 and 15, and 20.7% were aged 65 years and over, compared with 16.1% and 27.7% respectively for Toukley District.
The major differences between the age structure of Mountains District and Toukley District were:
- A larger percentage of persons aged 50 to 54 (9.2% compared to 6.2%)
- A larger percentage of persons aged 55 to 59 (8.9% compared to 6.5%)
- A smaller percentage of persons aged 85 and over (1.5% compared to 4.5%)
- A smaller percentage of persons aged 80 to 84 (2.3% compared to 4.0%)
Emerging groups
From 2016 to 2021, Mountains District's population decreased by 8 people (0.2%). This represents an average annual population change of -0.04% per year over the period.
The largest changes in age structure in this area between 2016 and 2021 were in the age groups:
- 45 to 49 (-88 persons)
- 35 to 39 (+65 persons)
- 10 to 14 (-61 persons)