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City of CanningPopulation forecast

Bentley

Population and age structure

Between 2021 and 2031, the age structure forecasts for Bentley indicate a 30.6% increase in population under working age, a 116.9% increase in population of retirement age, and a 2.1% decrease in population 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 Canning 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
Bentley - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 43494.64405.25714.9+222
5 to 93164.13674.44594.0+143
10 to 142333.03664.34373.8+204
15 to 193885.14745.65574.8+169
20 to 241,43618.78149.71,0379.0-399
25 to 291,34417.593711.11,35811.8+14
30 to 3499713.099011.71,37711.9+380
35 to 396728.885810.21,1379.9+465
40 to 444215.56107.27476.5+326
45 to 493214.24715.65925.1+271
50 to 542753.63744.45044.4+229
55 to 592222.93243.84453.9+223
60 to 641602.12513.03753.3+215
65 to 691712.21822.22642.3+93
70 to 741261.61942.32692.3+143
75 to 79931.22553.03773.3+284
80 to 84931.23073.64704.1+377
85 and over480.62142.55564.8+508
Total persons7,665100.08,429100.011,531100.0+3,866
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), February 2024.

Key findings

In 2021, the dominant age structure for persons in Bentley was ages 20 to 24, which accounted for 18.7% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 80 to 84, which is expected to increase by 214 and account for 3.6% of the total persons.

The largest 5 year age group in 2031 is 30 to 34 years, with a total of 990 persons.

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