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City of BrimbankCommunity profile

St Albans District

Five year age groups

In 2021, the largest age group in the St Albans District was 25 to 29 year olds. The group that changed the most since 2001 was 15 to 19 year olds, decreasing by 1,107 people.

The Age Structure of the St Albans District provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the St Albans District'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 the St Albans District'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
St Albans District - Total persons (Enumerated)20212001Change
Five year age groups (years)Number%City of Brimbank %Number%City of Brimbank %2001 to 2021
0 to 42,8135.75.73,2076.77.0-394
5 to 92,8755.86.03,4927.37.6-617
10 to 142,6325.35.73,3016.97.4-669
15 to 192,6695.45.73,7767.97.7-1,107
20 to 243,5957.36.94,0558.57.7-460
25 to 294,3668.88.13,5367.47.7+830
30 to 343,9968.17.63,5207.47.9+476
35 to 393,4557.07.23,4677.27.7-12
40 to 442,9385.96.43,4037.17.6-465
45 to 492,7915.66.33,6507.67.3-859
50 to 542,9425.96.33,4327.26.8-490
55 to 592,8215.76.12,4265.14.8+395
60 to 642,7505.65.81,9644.13.7+786
65 to 692,6475.45.01,6793.53.0+968
70 to 742,3714.84.31,2892.72.5+1,082
75 to 791,5923.23.09442.01.9+648
80 to 841,1532.32.04460.91.0+707
85 and over1,0452.11.92920.60.7+753
Total population49,451100.0100.047,879100.0100.0+1,572
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 the St Albans District in 2021 compared to the City of Brimbank 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, 16.8% of the population was aged between 0 and 15, and 17.8% 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 the St Albans District and the City of Brimbank were:

  • A larger percentage of persons aged 25 to 29 (8.8% compared to 8.1%)
  • A smaller percentage of persons aged 45 to 49 (5.6% compared to 6.3%)

Emerging groups

From 2001 to 2021, St Albans District's population increased by 1,572 people (3.3%). This represents an average annual population change of 0.16% per year over the period.

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

  • 15 to 19 (-1,107 persons)
  • 70 to 74 (+1,082 persons)
  • 65 to 69 (+968 persons)
  • 45 to 49 (-859 persons)

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