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City of BrimbankCommunity profile

Sydenham - Hillside

Five year age groups

In 2021, the largest age group in Sydenham - Hillside was 25 to 29 year olds. The group that changed the most since 1996 was 55 to 59 year olds, increasing by 745 people.

The Age Structure of Sydenham - Hillside provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Sydenham - Hillside'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 Sydenham - Hillside'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
Sydenham - Hillside - Total persons (Enumerated)20211996Change
Five year age groups (years)Number%City of Brimbank %Number%City of Brimbank %1996 to 2021
0 to 46465.55.750311.87.5+143
5 to 96485.56.04229.97.8+226
10 to 146715.75.73578.47.9+314
15 to 197426.35.72465.88.4+496
20 to 249448.16.93277.78.5+617
25 to 299488.18.160014.08.1+347
30 to 349177.87.656713.38.0+350
35 to 398177.07.23869.08.0+430
40 to 446996.06.42916.87.9+407
45 to 498126.96.31914.57.5+620
50 to 548217.06.31433.45.5+677
55 to 598237.06.1771.84.2+745
60 to 646245.35.8641.53.4+560
65 to 694694.05.0320.82.8+436
70 to 743673.14.3130.32.3+354
75 to 792622.23.0110.31.3+250
80 to 841991.72.0100.20.7+189
85 and over3082.61.9270.60.5+281
Total population11,717100.0100.04,275100.0100.0+7,441
Source: Australian Bureau of Statistics, Census of Population and Housing 1996 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 Sydenham - Hillside in 2021 compared to the City of Brimbank shows that there was a lower proportion of people in the younger age groups (under 15) as well as a lower proportion of people in the older age groups (65+).

Overall, 16.8% of the population was aged between 0 and 15, and 13.7% were aged 65 years and over, compared with 17.4% and 16.2% respectively for the City of Brimbank.

The major differences between the age structure of Sydenham - Hillside and the City of Brimbank were:

  • A larger percentage of persons aged 20 to 24 (8.1% compared to 6.9%)
  • A larger percentage of persons aged 55 to 59 (7.0% compared to 6.1%)
  • A smaller percentage of persons aged 70 to 74 (3.1% compared to 4.3%)
  • A smaller percentage of persons aged 65 to 69 (4.0% compared to 5.0%)

Emerging groups

From 1996 to 2021, Sydenham - Hillside's population increased by 7,442 people (174.1%). This represents an average annual population change of 4.12% per year over the period.

The largest changes in age structure in this area between 1996 and 2021 were in the age groups:

  • 55 to 59 (+745 persons)
  • 50 to 54 (+677 persons)
  • 45 to 49 (+620 persons)
  • 20 to 24 (+617 persons)

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