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City of CanningPopulation forecast


Population and age structure

Between 2016 and 2031, the age structure forecasts for Bentley indicate a 76.1% increase in population under working age, a 59.6% increase in population of retirement age, and a 42.4% increase 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 Bentley 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 persons201620312041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 43524.85755.45665.2+214
5 to 92092.93983.74163.8+207
10 to 141452.02702.53092.8+164
15 to 195317.39118.59408.6+409
20 to 241,57721.71,91317.91,88017.1+303
25 to 291,21216.71,65215.51,61114.7+399
30 to 3484311.61,18911.11,17210.7+329
35 to 395127.08768.28768.0+364
40 to 443464.86606.26826.2+336
45 to 492863.95144.85535.0+267
50 to 542543.53423.24213.8+167
55 to 592022.82462.33263.0+124
60 to 642183.02112.02492.3+31
65 to 691862.62041.92131.9+27
70 to 741612.22142.02232.0+62
75 to 791131.62061.92091.9+96
80 to 84530.71491.41591.4+106
85 and over680.91541.41691.5+101
Total persons7,268100.010,684100.010,975100.0+3,707
Population and household forecasts, 2016 to 2041, prepared by .id , the population experts, December 2018.

Key findings

In 2016, the dominant age structure for persons in Bentley was ages 20 to 24, which accounted for 21.7% of the total persons.

The largest increase in persons between 2016 and 2031 is forecast to be in ages 25 to 29, which is expected to increase by 440 and account for 15.5% of the total persons.

The largest 5 year age group in 2031 is 20 to 24 years, with a total of 1,913 persons.

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