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City of BrimbankCommunity profile

Derrimut

Five year age groups

In 2021, the largest age group in Derrimut was 35 to 39 year olds. The group that changed the most since 2006 was 5 to 9 year olds, increasing by 806 people.

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.

Q:

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)20212006Change
Five year age groups (years)Number%City of Brimbank %Number%City of Brimbank %2006 to 2021
0 to 47058.25.61419.46.5+564
5 to 992410.76.01187.86.8+806
10 to 148019.35.71238.27.2+678
15 to 195716.65.71046.97.4+467
20 to 244855.66.91087.27.6+377
25 to 295576.58.121714.47.1+340
30 to 346127.17.622514.97.3+387
35 to 3993710.97.21328.87.5+805
40 to 448599.96.4805.37.3+779
45 to 496447.56.3926.17.2+552
50 to 544715.56.3654.36.9+406
55 to 593444.06.1392.66.2+305
60 to 642923.45.8362.44.5+256
65 to 691872.25.1130.93.4+174
70 to 741181.44.390.62.7+109
75 to 79740.93.060.42.1+68
80 to 84380.42.00--1.4+38
85 and over160.21.90--0.9+16
Total population8,635100.0100.01,508100.0100.0+7,127
Source: Australian Bureau of Statistics, Census of Population and Housing 2006 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 Derrimut in 2021 compared to the 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, 28.1% of the population was aged between 0 and 15, and 5.0% were aged 65 years and over, compared with 17.3% and 16.3% 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 persons aged 5 to 9 (10.7% compared to 6.0%)
  • A larger percentage of persons aged 35 to 39 (10.9% compared to 7.2%)
  • A larger percentage of persons aged 10 to 14 (9.3% compared to 5.7%)
  • A larger percentage of persons aged 40 to 44 (9.9% compared to 6.4%)

Emerging groups

From 2006 to 2021, Derrimut's population increased by 7,127 people (472.6%). This represents an average annual population change of 12.34% per year over the period.

The largest changes in age structure in this area between 2006 and 2021 were in the age groups:

  • 5 to 9 (+806 persons)
  • 35 to 39 (+805 persons)
  • 40 to 44 (+779 persons)
  • 10 to 14 (+678 persons)

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