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City of KalamundaPopulation forecast

Lesmurdie

Population and age structure

Between 2021 and 2031, the age structure forecasts for Lesmurdie indicate a 30.8% decrease in population under working age, a 38.2% increase in population of retirement age, and a 9.4% 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 the City of Kalamunda 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
Lesmurdie - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 44194.93603.93613.9-58
5 to 95486.43814.23814.1-168
10 to 147669.04595.04234.5-342
15 to 196737.97007.65505.9-123
20 to 244355.17037.75495.9+114
25 to 292813.34404.84334.6+152
30 to 343173.74044.44374.7+120
35 to 394375.13684.04214.5-16
40 to 445256.14234.64134.4-112
45 to 496037.15235.74494.8-154
50 to 546367.45606.14795.1-158
55 to 595596.56387.05986.4+39
60 to 645096.06867.56727.2+163
65 to 695055.96507.16486.9+143
70 to 744815.65686.26617.1+181
75 to 793704.35365.86787.3+308
80 to 842573.04134.55255.6+268
85 and over2232.63704.06697.2+446
Total persons8,544100.09,182100.09,348100.0+804
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), January 2024.

Key findings

In 2021, the dominant age structure for persons in Lesmurdie was ages 10 to 14, which accounted for 9.0% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 20 to 24, which is expected to increase by 268 and account for 7.7% of the total persons.

The largest 5 year age group in 2031 is 20 to 24 years, with a total of 703 persons.

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