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City of BrimbankCommunity profile

Derrimut

Service age groups

In 2021, Derrimut had higher proportion of children (under 18) and a lower proportion of persons aged 60 or older than the City of Brimbank.

The Age Structure of Derrimut provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Derrimut'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 Derrimut'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
Derrimut - Total persons (Usual residence)20212001Change
Service age group (years)Number%City of Brimbank %Number%City of Brimbank %2001 to 2021
Babies and pre-schoolers (0 to 4)7058.25.605.47.0+704
Primary schoolers (5 to 11)1,25714.58.3110.810.6+1,256
Secondary schoolers (12 to 17)86210.06.805.49.0+861
Tertiary education and independence (18 to 24)6587.69.2110.810.8+657
Young workforce (25 to 34)1,16713.515.7113.515.6+1,166
Parents and homebuilders (35 to 49)2,44628.319.9221.622.6+2,444
Older workers and pre-retirees (50 to 59)8139.412.4116.211.7+811
Empty nesters and retirees (60 to 69)4815.610.908.16.8+480
Seniors (70 to 84)2352.79.305.45.4+234
Elderly aged (85 and over)160.21.902.70.7+16
Total8,640100.0100.011100.0100.0+8,629
Source: Australian Bureau of Statistics, Census of Population and Housing 2001 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 Derrimut in 2021 compared to the City of Brimbank shows that there was a higher proportion of people in the younger age groups (0 to 17 years) and a lower proportion of people in the older age groups (60+ years).

Overall, 32.7% of the population was aged between 0 and 17, and 8.5% were aged 60 years and over, compared with 20.8% and 22.1% respectively for the City of Brimbank.

The major differences between the age structure of Derrimut and the City of Brimbank were:

  • A larger percentage of 'Parents and homebuilders' (28.3% compared to 19.9%)
  • A larger percentage of 'Primary schoolers' (14.5% compared to 8.3%)
  • A smaller percentage of 'Seniors' (2.7% compared to 9.3%)
  • A smaller percentage of 'Empty nesters and retirees' (5.6% compared to 10.9%)

Emerging groups

From 2001 to 2021, Derrimut's population increased by 8,629 people (78445.5%). This represents an average annual population change of 39.56% per year over the period.

The largest changes in the age structure in this area between 2001 and 2021 were in the age groups:

  • Parents and homebuilders (35 to 49) (+2,444 people)
  • Primary schoolers (5 to 11) (+1,256 people)
  • Young workforce (25 to 34) (+1,166 people)
  • Secondary schoolers (12 to 17) (+861 people)

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