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LEARN MORE ABOUT .idIn 2021, the largest age group in Middle Harbour Ward was 40 to 44 year olds. The group that changed the most since 1991 was 45 to 49 year olds, increasing by 556 people.
The Age Structure of Middle Harbour Ward provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Middle Harbour Ward'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 Middle Harbour Ward'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 | |||||||
|---|---|---|---|---|---|---|---|
| Middle Harbour Ward - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Hornsby Shire % | Number | % | Hornsby Shire % | 1991 to 2021 |
| 0 to 4 | 896 | 5.0 | 5.0 | 852 | 6.0 | 7.4 | +43 |
| 5 to 9 | 1,286 | 7.2 | 6.8 | 824 | 5.8 | 7.6 | +461 |
| 10 to 14 | 1,339 | 7.5 | 7.2 | 802 | 5.6 | 8.1 | +537 |
| 15 to 19 | 1,098 | 6.2 | 6.4 | 980 | 6.8 | 8.6 | +118 |
| 20 to 24 | 984 | 5.5 | 5.5 | 1,215 | 8.5 | 7.1 | -232 |
| 25 to 29 | 830 | 4.7 | 4.4 | 1,050 | 7.3 | 5.9 | -221 |
| 30 to 34 | 827 | 4.7 | 5.1 | 1,114 | 7.8 | 7.3 | -288 |
| 35 to 39 | 1,229 | 6.9 | 7.0 | 1,122 | 7.8 | 7.8 | +107 |
| 40 to 44 | 1,437 | 8.1 | 7.7 | 1,136 | 7.9 | 8.4 | +301 |
| 45 to 49 | 1,409 | 7.9 | 7.5 | 853 | 6.0 | 7.1 | +556 |
| 50 to 54 | 1,231 | 6.9 | 7.0 | 762 | 5.3 | 5.4 | +468 |
| 55 to 59 | 1,105 | 6.2 | 6.5 | 623 | 4.3 | 4.1 | +482 |
| 60 to 64 | 970 | 5.5 | 5.8 | 667 | 4.7 | 3.8 | +303 |
| 65 to 69 | 834 | 4.7 | 5.0 | 721 | 5.0 | 3.3 | +112 |
| 70 to 74 | 804 | 4.5 | 4.3 | 565 | 3.9 | 2.7 | +238 |
| 75 to 79 | 561 | 3.2 | 3.4 | 512 | 3.6 | 2.3 | +49 |
| 80 to 84 | 449 | 2.5 | 2.5 | 325 | 2.3 | 1.7 | +123 |
| 85 and over | 478 | 2.7 | 2.8 | 199 | 1.4 | 1.5 | +278 |
| Total population | 17,767 | 100.0 | 100.0 | 14,331 | 100.0 | 100.0 | +3,435 |
Dominant groups
Analysis of the five year age groups of Middle Harbour Ward in 2021 compared to Hornsby Shire shows that there was a higher proportion of people in the younger age groups (under 15) and a similar proportion of people in the older age groups (65+).
Overall, 19.8% of the population was aged between 0 and 15, and 17.6% were aged 65 years and over, compared with 19.1% and 18.0% respectively for Hornsby Shire.
There were no major differences between Middle Harbour Ward and Hornsby Shire in 2021.
Emerging groups
From 1991 to 2021, Middle Harbour Ward's population increased by 3,436 people (24.0%). This represents an average annual population change of 0.72% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 45 to 49 (+556 persons)
- 10 to 14 (+537 persons)
- 55 to 59 (+482 persons)
- 50 to 54 (+468 persons)
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