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City of SydneyCommunity profile

City of Sydney

Five year age groups

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In 2021, the largest age group in the City of Sydney was 25 to 29 year olds. The group that changed the most since 2016 was 20 to 24 year olds, decreasing by 4,120 people.

The Age Structure of the City of Sydney provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the City of Sydney'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 the City of Sydney'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
City of Sydney - Total females (Usual residence)20212016Change
Five year age groups (years)Number%New South Wales %Number%New South Wales %2016 to 2021
0 to 43,6033.65.63,4783.56.0+125
5 to 92,3662.36.01,9872.06.1+379
10 to 141,8431.86.01,5151.55.7+328
15 to 192,8042.85.44,6034.65.8-1,799
20 to 2411,23511.15.915,35515.36.4-4,120
25 to 2917,29417.16.818,56718.57.0-1,273
30 to 3415,94315.87.314,82414.77.2+1,119
35 to 3910,81210.77.28,8638.86.7+1,949
40 to 446,9326.96.55,9846.06.8+948
45 to 495,2695.26.44,9184.96.7+351
50 to 544,6434.66.34,2874.36.5+356
55 to 594,2104.26.14,0284.06.4+182
60 to 643,9073.96.03,5233.55.7+384
65 to 693,3023.35.32,9703.05.2+332
70 to 742,6742.64.72,0382.04.0+636
75 to 791,7581.73.41,4981.53.0+260
80 to 841,2161.22.51,0261.02.3+190
85 and over1,1931.22.81,0751.12.8+118
Total population101,004100.0100.0100,539100.0100.0+465
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the female five year age groups of the City of Sydney in 2021 compared to New South Wales shows that there was a lower proportion of females in the younger age groups (under 15) as well as a lower proportion of females in the older age groups (65+).

Overall, 7.7% of the female population was aged between 0 and 15, and 10.0% were aged 65 years and over, compared with 17.5% and 18.6% respectively for New South Wales.

The major differences between the female age structure of the City of Sydney and New South Wales were:

  • A larger percentage of females aged 25 to 29 (17.1% compared to 6.8%)
  • A larger percentage of females aged 30 to 34 (15.8% compared to 7.3%)
  • A larger percentage of females aged 20 to 24 (11.1% compared to 5.9%)
  • A smaller percentage of females aged 10 to 14 (1.8% compared to 6.0%)

Emerging groups

From 2016 to 2021, City of Sydney's female population increased by 465 people (0.5%). This represents an average annual population change of 0.09% per year over the period.

The largest changes in female age structure in this area between 2016 and 2021 were in the age groups:

  • 20 to 24 (-4,120 females)
  • 35 to 39 (+1,949 females)
  • 15 to 19 (-1,799 females)
  • 25 to 29 (-1,273 females)

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