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City of BrimbankCommunity profile

We’re continuing to update these pages with data from the 2016 Census. Read more about our updates.


Five year age groups

This topic has been updated with 2016 Census data for all areas. What's this?

There were 11 people over the age of 85 living in Derrimut in 2016, with largest age group being 0 to 4 year olds.

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 also an indicator of Derrimut'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 Derrimut's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.


Derived from the Census question:

'What is the person's date of birth or age?'

Age structure - Five year age groups
Derrimut - Total persons (Usual residence)20162011Change
Five year age groups (years)Number%City of Brimbank %Number%City of Brimbank %2011 to 2016
0 to 41,04012.66.781213.66.6+228
5 to 987310.66.04908.26.2+383
10 to 145907.25.73495.86.3+241
15 to 194495.56.33175.37.0+132
20 to 244375.37.84277.17.9+10
25 to 295536.78.176012.78.4-207
30 to 3499612.18.087614.67.5+120
35 to 3996811.86.967511.37.2+293
40 to 447298.86.64076.87.1+322
45 to 494765.86.52764.66.7+200
50 to 543744.56.32253.86.5+149
55 to 592773.46.01873.16.0+90
60 to 641812.25.4821.45.3+99
65 to 691431.74.7560.93.8+87
70 to 74841.03.3310.52.9+53
75 to 79420.52.430.12.1+39
80 to 84150.21.7100.21.5+5
85 and over110.11.530.11.2+8
Total population8,238100.0100.05,986100.0100.0+2,252
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 and 2016. Compiled and presented by .id , the population experts.

Please refer to specific data notes for more information

Dominant groups

Analysis of the five year age groups of Derrimut in 2016 compared to City of Brimbank shows that there was a higher proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).

Overall, 30.4% of the population was aged between 0 and 15, and 3.6% were aged 65 years and over, compared with 18.5% and 13.6% respectively for City of Brimbank.

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

  • A larger percentage of persons aged 0 to 4 (12.6% compared to 6.7%)
  • A larger percentage of persons aged 35 to 39 (11.8% compared to 6.9%)
  • A larger percentage of persons aged 5 to 9 (10.6% compared to 6.0%)
  • A larger percentage of persons aged 30 to 34 (12.1% compared to 8.0%)

Emerging groups

From 2011 to 2016, Derrimut's population increased by 2,252 people (37.6%). This represents an average annual population change of 6.6% per year over the period.

The largest changes in age structure in this area between 2011 and 2016 were in the age groups:

  • 5 to 9 (+383 persons)
  • 40 to 44 (+322 persons)
  • 35 to 39 (+293 persons)
  • 10 to 14 (+241 persons)

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