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LEARN MORE ABOUT .idIn 2021, Blue Mountains City had lower proportion of children (under 18) and a higher proportion of persons aged 60 or older than Wollondilly Shire.
The Age Structure of Blue Mountains City provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Blue Mountains City's residential role and function and how it is likely to change in the future.
Service age groups divide the population into age categories that reflect typical life-stages. They indicate the level of demand for services that target people at different stages in life and how that demand is changing.
To get a more complete picture Blue Mountains City'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 - Service age groups | |||||||
|---|---|---|---|---|---|---|---|
| Blue Mountains City - Total persons (Usual residence) | 2021 | 2006 | Change | ||||
| Service age group (years) | Number | % | Wollondilly Shire % | Number | % | Wollondilly Shire % | 2006 to 2021 |
| Babies and pre-schoolers (0 to 4) | 3,889 | 5.0 | 7.0 | 4,711 | 6.4 | 7.5 | -822 |
| Primary schoolers (5 to 11) | 6,675 | 8.5 | 10.3 | 7,106 | 9.6 | 11.7 | -431 |
| Secondary schoolers (12 to 17) | 6,077 | 7.8 | 8.7 | 6,688 | 9.0 | 10.1 | -611 |
| Tertiary education and independence (18 to 24) | 5,084 | 6.5 | 8.6 | 5,874 | 7.9 | 8.7 | -790 |
| Young workforce (25 to 34) | 7,126 | 9.1 | 12.1 | 7,666 | 10.4 | 12.2 | -540 |
| Parents and homebuilders (35 to 49) | 15,069 | 19.3 | 19.8 | 16,692 | 22.5 | 23.5 | -1,623 |
| Older workers and pre-retirees (50 to 59) | 10,879 | 13.9 | 12.6 | 11,361 | 15.3 | 13.2 | -482 |
| Empty nesters and retirees (60 to 69) | 11,335 | 14.5 | 10.7 | 6,992 | 9.4 | 7.3 | +4,343 |
| Seniors (70 to 84) | 10,242 | 13.1 | 8.9 | 5,730 | 7.7 | 5.0 | +4,512 |
| Elderly aged (85 and over) | 1,763 | 2.3 | 1.4 | 1,239 | 1.7 | 0.9 | +524 |
| Total | 78,139 | 100.0 | 100.0 | 74,059 | 100.0 | 100.0 | +4,080 |
Dominant groups
Analysis of the service age groups of Blue Mountains City in 2021 compared to Wollondilly Shire shows that there was a lower proportion of people in the younger age groups (0 to 17 years) and a higher proportion of people in the older age groups (60+ years).
Overall, 21.3% of the population was aged between 0 and 17, and 29.9% were aged 60 years and over, compared with 26.0% and 21.0% respectively for Wollondilly Shire.
The major differences between the age structure of Blue Mountains City and Wollondilly Shire were:
- A larger percentage of 'Seniors' (13.1% compared to 8.9%)
- A larger percentage of 'Empty nesters and retirees' (14.5% compared to 10.7%)
- A smaller percentage of 'Young workforce' (9.1% compared to 12.1%)
- A smaller percentage of 'Tertiary education & independence' (6.5% compared to 8.6%)
Emerging groups
From 2006 to 2021, Blue Mountains City's population increased by 4,080 people (5.5%). This represents an average annual population change of 0.36% per year over the period.
The largest changes in the age structure in this area between 2006 and 2021 were in the age groups:
- Seniors (70 to 84) (+4,512 people)
- Empty nesters and retirees (60 to 69) (+4,343 people)
- Parents and homebuilders (35 to 49) (-1,623 people)
- Babies and pre-schoolers (0 to 4) (-822 people)
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