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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 2006 was 25 to 29 year olds, increasing by 1,075 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 (Usual residence)20212006Change
Five year age groups (years)Number%City of Brimbank %Number%City of Brimbank %2006 to 2021
0 to 42,8065.75.62,7636.16.5+43
5 to 92,8765.86.02,8886.46.8-12
10 to 142,6215.35.73,1056.97.2-484
15 to 192,6825.45.73,1206.97.4-438
20 to 243,6187.36.93,6158.07.6+3
25 to 294,3938.98.13,3187.37.1+1,075
30 to 344,0028.17.63,0996.87.3+903
35 to 393,4677.07.23,1627.07.5+305
40 to 442,9325.96.43,0456.77.3-113
45 to 492,7985.76.33,0206.77.2-222
50 to 542,9275.96.33,3297.46.9-402
55 to 592,8145.76.13,1226.96.2-308
60 to 642,7405.55.82,2314.94.5+509
65 to 692,6525.45.11,8004.03.4+852
70 to 742,3604.84.31,4753.32.7+885
75 to 791,5893.23.01,1472.52.1+442
80 to 841,1632.42.06671.51.4+496
85 and over1,0362.11.93510.80.9+685
Total population49,476100.0100.045,257100.0100.0+4,219
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 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 17.3% and 16.3% 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 (8.9% compared to 8.1%)
  • A smaller percentage of persons aged 45 to 49 (5.7% compared to 6.3%)

Emerging groups

From 2006 to 2021, St Albans District's population increased by 4,219 people (9.3%). This represents an average annual population change of 0.6% per year over the period.

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

  • 25 to 29 (+1,075 persons)
  • 30 to 34 (+903 persons)
  • 70 to 74 (+885 persons)
  • 65 to 69 (+852 persons)

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