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Hobsons Bay CityCommunity profile

Altona North

Five year age groups

In 2021, the largest age group in Altona North was 35 to 39 year olds. The group that changed the most since 2001 was 35 to 39 year olds, increasing by 431 people.

The Age Structure of Altona North provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Altona North'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 Altona North'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
Altona North - Total persons (Usual residence)20212001Change
Five year age groups (years)Number%Hobsons Bay City %Number%Hobsons Bay City %2001 to 2021
0 to 41,0247.96.37066.27.0+318
5 to 98946.96.46826.06.9+212
10 to 147065.55.85965.26.4+109
15 to 195514.34.97076.25.9-157
20 to 245984.65.08027.06.2-204
25 to 299337.26.28567.57.5+77
30 to 341,1118.67.47906.98.6+321
35 to 391,1198.68.16876.08.6+431
40 to 449567.47.56685.98.2+288
45 to 497886.17.15905.26.7+198
50 to 547135.57.06195.46.1+93
55 to 595444.26.36615.84.6-118
60 to 644963.85.88017.04.1-306
65 to 694933.84.88257.23.8-332
70 to 744663.64.16215.53.5-155
75 to 795063.92.84273.82.8+79
80 to 844933.82.11991.81.6+293
85 and over5614.32.31461.31.3+415
Total population12,952100.0100.011,389100.0100.0+1,562
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 five year age groups of Altona North in 2021 compared to Hobsons Bay City shows that there was a higher proportion of people in the younger age groups (under 15) as well as a higher proportion of people in the older age groups (65+).

Overall, 20.3% of the population was aged between 0 and 15, and 19.4% were aged 65 years and over, compared with 18.5% and 16.1% respectively for Hobsons Bay City.

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

  • A larger percentage of persons aged 85 and over (4.3% compared to 2.3%)
  • A larger percentage of persons aged 80 to 84 (3.8% compared to 2.1%)
  • A smaller percentage of persons aged 55 to 59 (4.2% compared to 6.3%)
  • A smaller percentage of persons aged 60 to 64 (3.8% compared to 5.8%)

Emerging groups

From 2001 to 2021, Altona North's population increased by 1,563 people (13.7%). This represents an average annual population change of 0.65% per year over the period.

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

  • 35 to 39 (+431 persons)
  • 85 and over (+415 persons)
  • 65 to 69 (-332 persons)
  • 30 to 34 (+321 persons)

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