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Hobsons Bay CityCommunity profile

Williamstown

Service age groups

In 2021, Williamstown had higher proportion of children (under 18) and a higher proportion of persons aged 60 or older than Hobsons Bay City.

The Age Structure of Williamstown provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Williamstown'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 Williamstown'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
Williamstown - Total persons (Enumerated)20211991Change
Service age group (years)Number%Hobsons Bay City %Number%Hobsons Bay City %1991 to 2021
Babies and pre-schoolers (0 to 4)4684.16.36176.77.7-150
Primary schoolers (5 to 11)1,0699.38.87117.79.5+358
Secondary schoolers (12 to 17)1,0068.86.46216.78.0+385
Tertiary education and independence (18 to 24)8227.26.98269.011.9-4
Young workforce (25 to 34)9278.113.71,57617.117.8-649
Parents and homebuilders (35 to 49)2,31620.222.72,10222.820.0+214
Older workers and pre-retirees (50 to 59)1,97117.213.37678.310.1+1,203
Empty nesters and retirees (60 to 69)1,50913.210.59079.88.6+602
Seniors (70 to 84)1,15310.19.097310.65.9+180
Elderly aged (85 and over)2131.92.31161.30.6+97
Total11,454100.0100.09,218100.0100.0+2,235
Source: Australian Bureau of Statistics, Census of Population and Housing 1991 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the service age groups of Williamstown in 2021 compared to Hobsons Bay City shows that there was a higher proportion of people in the younger age groups (0 to 17 years) as well as a higher proportion of people in the older age groups (60+ years).

Overall, 22.2% of the population was aged between 0 and 17, and 25.1% were aged 60 years and over, compared with 21.5% and 21.8% respectively for Hobsons Bay City.

The major differences between the age structure of Williamstown and Hobsons Bay City were:

  • A larger percentage of 'Older workers & pre-retirees' (17.2% compared to 13.3%)
  • A larger percentage of 'Empty nesters and retirees' (13.2% compared to 10.5%)
  • A smaller percentage of 'Young workforce' (8.1% compared to 13.7%)
  • A smaller percentage of 'Parents and homebuilders' (20.2% compared to 22.7%)

Emerging groups

From 1991 to 2021, Williamstown's population increased by 2,236 people (24.3%). This represents an average annual population change of 0.73% per year over the period.

The largest changes in the age structure in this area between 1991 and 2021 were in the age groups:

  • Older workers and pre-retirees (50 to 59) (+1,203 people)
  • Young workforce (25 to 34) (-649 people)
  • Empty nesters and retirees (60 to 69) (+602 people)
  • Secondary schoolers (12 to 17) (+385 people)

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