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City of ArmadalePopulation forecast

Armadale South

Population and age structure

Between 2021 and 2031, the age structure forecasts for Armadale South indicate a 37.4% increase in males under working age, a 17.6% decrease in males of retirement age, and a 15.4% increase in males of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of the City of Armadale is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function. You can learn more about this in the section household and suburb life cycles.

Forecast age structure - 5 year age groups
Armadale South - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 42647.13347.93917.9+127
5 to 92095.63057.23467.0+137
10 to 142256.03207.63426.9+117
15 to 192135.73448.13567.2+143
20 to 242667.13007.13156.4+49
25 to 292627.02766.53326.7+69
30 to 342336.23167.53827.7+149
35 to 392095.63117.43917.9+182
40 to 441915.13027.23426.9+151
45 to 492085.62686.43006.1+92
50 to 541985.31874.42424.9+44
55 to 592787.41744.12314.7-47
60 to 642536.81884.42244.5-29
65 to 692185.81643.91703.4-48
70 to 741624.31423.41583.2-4
75 to 791343.61253.01583.2+24
80 to 841052.8952.21292.6+24
85 and over1042.8701.71342.7+30
Total persons3,733100.04,220100.04,942100.0+1,210
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for males in Armadale South was ages 55 to 59, which accounted for 7.4% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 15 to 19, which is expected to increase by 131 and account for 8.1% of the total males.

The largest male 5 year age group in 2031 is 15 to 19 years, with a total of 344 males.

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