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Hobsons Bay CityCommunity profile

Altona - Seaholme

Five year age groups

In 2021, the largest age group in Altona - Seaholme was 35 to 39 year olds. The group that changed the most since 2016 was 35 to 39 year olds, increasing by 157 people.

The Age Structure of Altona - Seaholme 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 - Seaholme'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 - Seaholme'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 - Seaholme - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%Hobsons Bay City %Number%Hobsons Bay City %2016 to 2021
0 to 47825.86.37876.26.8-5
5 to 98806.56.47305.76.4+150
10 to 147205.35.85974.75.2+123
15 to 195754.24.95414.35.2+34
20 to 245303.95.05984.75.8-68
25 to 296644.96.27535.96.9-89
30 to 349066.77.49157.27.8-9
35 to 391,1648.68.11,0077.97.6+157
40 to 441,0667.97.59727.67.6+94
45 to 491,0137.57.19577.57.3+56
50 to 549987.47.08506.76.9+148
55 to 597935.96.38216.56.4-28
60 to 648076.05.87195.75.2+88
65 to 696935.14.86815.44.4+12
70 to 746755.04.15844.63.3+91
75 to 795073.72.84323.42.7+75
80 to 843732.82.13933.12.2-20
85 and over3982.92.33722.92.2+26
Total population13,544100.0100.012,709100.0100.0+835
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 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 - Seaholme in 2021 compared to Hobsons Bay City shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).

Overall, 17.6% of the population was aged between 0 and 15, and 19.5% 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 - Seaholme and Hobsons Bay City were:

  • A larger percentage of persons aged 70 to 74 (5.0% compared to 4.1%)
  • A larger percentage of persons aged 75 to 79 (3.7% compared to 2.8%)
  • A smaller percentage of persons aged 25 to 29 (4.9% compared to 6.2%)
  • A smaller percentage of persons aged 20 to 24 (3.9% compared to 5.0%)

Emerging groups

From 2016 to 2021, Altona - Seaholme's population increased by 835 people (6.6%). This represents an average annual population change of 1.28% per year over the period.

The largest changes in age structure in this area between 2016 and 2021 were in the age groups:

  • 35 to 39 (+157 persons)
  • 5 to 9 (+150 persons)
  • 50 to 54 (+148 persons)
  • 10 to 14 (+123 persons)

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