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Wollondilly Shire CouncilCommunity profile

Wollondilly Shire

Five year age groups

In 2021, the largest age group in Wollondilly Shire was 10 to 14 year olds. The group that changed the most since 2011 was 70 to 74 year olds, increasing by 1,160 people.

The Age Structure of Wollondilly Shire provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Wollondilly Shire'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 Wollondilly Shire'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
Wollondilly Shire - Total persons (Enumerated)20212011Change
Five year age groups (years)Number%Greater Sydney %Number%Greater Sydney %2011 to 2021
0 to 43,7497.06.03,1637.46.8+586
5 to 93,9037.36.33,4048.06.3+499
10 to 144,0107.56.23,3948.06.1+616
15 to 193,6796.95.63,1927.56.3+487
20 to 243,1615.96.52,5476.07.0+614
25 to 293,0955.87.52,1565.17.8+939
30 to 343,4306.48.02,4355.77.7+995
35 to 393,5596.67.93,1827.57.6+377
40 to 443,3266.27.03,2757.77.3+51
45 to 493,7457.06.63,0867.37.0+659
50 to 543,5446.66.23,1047.36.6+440
55 to 593,1885.95.82,6616.35.7+527
60 to 643,0705.75.32,4015.65.1+669
65 to 692,6434.94.51,6373.83.8+1,006
70 to 742,2964.33.91,1362.72.9+1,160
75 to 791,5032.82.87891.92.3+714
80 to 849341.72.05371.31.9+397
85 and over7721.42.04541.11.8+318
Total population53,607100.0100.042,553100.0100.0+11,054
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the five year age groups of Wollondilly Shire in 2021 compared to Greater Sydney 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, 21.8% of the population was aged between 0 and 15, and 15.2% 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 Wollondilly Shire and Greater Sydney were:

  • A larger percentage of persons aged 10 to 14 (7.5% compared to 6.2%)
  • A smaller percentage of persons aged 25 to 29 (5.8% compared to 7.5%)
  • A smaller percentage of persons aged 30 to 34 (6.4% compared to 8.0%)
  • A smaller percentage of persons aged 35 to 39 (6.6% compared to 7.9%)

Emerging groups

From 2011 to 2021, Wollondilly Shire's population increased by 11,054 people (26.0%). This represents an average annual population change of 2.34% per year over the period.

The largest changes in age structure in this area between 2011 and 2021 were in the age groups:

  • 70 to 74 (+1,160 persons)
  • 65 to 69 (+1,006 persons)
  • 30 to 34 (+995 persons)
  • 25 to 29 (+939 persons)

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