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LEARN MORE ABOUT .idIn 2021, the largest age group in Mountains was 50 to 54 year olds. The group that changed the most since 1991 was 60 to 64 year olds, increasing by 183 people.
The Age Structure of Mountains 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'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'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 | |||||||
|---|---|---|---|---|---|---|---|
| Mountains - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Central Coast Council area % | Number | % | Central Coast Council area % | 1991 to 2021 |
| 0 to 4 | 164 | 4.3 | 5.6 | 278 | 7.6 | 8.1 | -115 |
| 5 to 9 | 182 | 4.8 | 6.1 | 244 | 6.6 | 7.6 | -62 |
| 10 to 14 | 196 | 5.1 | 6.3 | 273 | 7.4 | 7.0 | -77 |
| 15 to 19 | 215 | 5.6 | 5.9 | 390 | 10.6 | 6.7 | -176 |
| 20 to 24 | 211 | 5.5 | 5.3 | 258 | 7.0 | 5.6 | -48 |
| 25 to 29 | 179 | 4.7 | 5.4 | 254 | 6.9 | 6.8 | -75 |
| 30 to 34 | 171 | 4.5 | 5.7 | 281 | 7.6 | 7.9 | -110 |
| 35 to 39 | 235 | 6.1 | 6.0 | 277 | 7.5 | 7.4 | -43 |
| 40 to 44 | 201 | 5.3 | 5.9 | 303 | 8.2 | 7.0 | -103 |
| 45 to 49 | 248 | 6.5 | 6.3 | 282 | 7.7 | 5.3 | -34 |
| 50 to 54 | 360 | 9.4 | 6.4 | 208 | 5.7 | 4.2 | +152 |
| 55 to 59 | 329 | 8.6 | 6.5 | 166 | 4.5 | 4.1 | +163 |
| 60 to 64 | 341 | 8.9 | 6.4 | 157 | 4.3 | 5.2 | +183 |
| 65 to 69 | 280 | 7.3 | 5.9 | 134 | 3.7 | 5.6 | +145 |
| 70 to 74 | 208 | 5.4 | 5.7 | 96 | 2.6 | 4.9 | +112 |
| 75 to 79 | 164 | 4.3 | 4.4 | 49 | 1.4 | 3.5 | +114 |
| 80 to 84 | 86 | 2.2 | 3.0 | 22 | 0.6 | 1.9 | +64 |
| 85 and over | 53 | 1.4 | 3.0 | 6 | 0.2 | 1.0 | +47 |
| Total population | 3,823 | 100.0 | 100.0 | 3,686 | 100.0 | 100.0 | +136 |
Dominant groups
Analysis of the five year age groups of Mountains in 2021 compared to Central Coast Council area 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, 14.2% of the population was aged between 0 and 15, and 20.7% were aged 65 years and over, compared with 18.1% and 22.1% respectively for Central Coast Council area.
The major differences between the age structure of Mountains and Central Coast Council area were:
- A larger percentage of persons aged 50 to 54 (9.4% compared to 6.4%)
- A larger percentage of persons aged 60 to 64 (8.9% compared to 6.4%)
- A larger percentage of persons aged 55 to 59 (8.6% compared to 6.5%)
- A smaller percentage of persons aged 85 and over (1.4% compared to 3.0%)
Emerging groups
From 1991 to 2021, Mountains's population increased by 137 people (3.7%). This represents an average annual population change of 0.12% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 60 to 64 (+183 persons)
- 15 to 19 (-176 persons)
- 55 to 59 (+163 persons)
- 50 to 54 (+152 persons)
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