In 2021, the largest age group in SSROC region was 30 to 34 year olds. The group that changed the most since 2016 was 70 to 74 year olds, increasing by 13,549 people.
The Age Structure of SSROC region provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of SSROC region'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 SSROC region's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.
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| Age structure - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| SSROC region - Total persons (Usual residence) | 2021 | 2016 | Change | ||||
| Five year age groups (years) | Number | % | Greater Sydney % | Number | % | Greater Sydney % | 2016 to 2021 |
| 0 to 4 | 93,978 | 5.4 | 6.0 | 98,448 | 5.8 | 6.4 | -4,470 |
| 5 to 9 | 91,387 | 5.2 | 6.3 | 91,096 | 5.4 | 6.4 | +291 |
| 10 to 14 | 89,237 | 5.1 | 6.2 | 80,527 | 4.8 | 5.8 | +8,710 |
| 15 to 19 | 85,419 | 4.9 | 5.6 | 88,979 | 5.3 | 6.0 | -3,560 |
| 20 to 24 | 126,970 | 7.2 | 6.6 | 137,738 | 8.2 | 7.1 | -10,768 |
| 25 to 29 | 163,693 | 9.3 | 7.5 | 167,059 | 9.9 | 7.9 | -3,366 |
| 30 to 34 | 165,586 | 9.4 | 8.0 | 158,691 | 9.4 | 8.1 | +6,895 |
| 35 to 39 | 143,504 | 8.2 | 7.9 | 130,293 | 7.7 | 7.4 | +13,211 |
| 40 to 44 | 119,866 | 6.8 | 7.0 | 118,191 | 7.0 | 7.1 | +1,675 |
| 45 to 49 | 113,722 | 6.5 | 6.6 | 108,958 | 6.5 | 6.7 | +4,764 |
| 50 to 54 | 106,575 | 6.1 | 6.2 | 102,525 | 6.1 | 6.3 | +4,050 |
| 55 to 59 | 100,031 | 5.7 | 5.8 | 92,868 | 5.5 | 5.8 | +7,163 |
| 60 to 64 | 89,546 | 5.1 | 5.3 | 79,335 | 4.7 | 5.0 | +10,211 |
| 65 to 69 | 75,400 | 4.3 | 4.5 | 69,487 | 4.1 | 4.4 | +5,913 |
| 70 to 74 | 66,213 | 3.8 | 3.9 | 52,664 | 3.1 | 3.3 | +13,549 |
| 75 to 79 | 48,753 | 2.8 | 2.8 | 40,794 | 2.4 | 2.4 | +7,959 |
| 80 to 84 | 35,493 | 2.0 | 2.0 | 31,512 | 1.9 | 1.8 | +3,981 |
| 85 and over | 39,144 | 2.2 | 2.0 | 35,780 | 2.1 | 2.0 | +3,364 |
| Total population | 1,754,517 | 100.0 | 100.0 | 1,684,945 | 100.0 | 100.0 | +69,572 |
Analysis of the five year age groups of SSROC region 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, 15.7% of the population was aged between 0 and 15, and 15.1% 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 SSROC region and Greater Sydney were:
From 2016 to 2021, SSROC region's population increased by 69,572 people (4.1%). This represents an average annual population change of 0.81% per year over the period.
The largest changes in age structure in this area between 2016 and 2021 were in the age groups:
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