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City of KalamundaPopulation forecast

City of Kalamunda

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Kalamunda indicate a 13.2% decrease in population under working age, a 34.7% increase in population of retirement age, and a 11.2% 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
City of Kalamunda - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 43,5225.83,3214.93,6264.9+104
5 to 94,0036.63,3014.93,4994.8-504
10 to 144,3817.23,7085.53,6685.0-713
15 to 193,7236.14,6296.94,1825.7+459
20 to 243,2835.44,7317.04,4186.0+1,134
25 to 293,1145.13,8775.84,3415.9+1,227
30 to 343,6956.13,8745.74,5576.2+861
35 to 394,1666.83,7285.54,4256.0+259
40 to 444,1116.84,1966.24,2165.7+106
45 to 494,0946.74,5206.74,2545.8+159
50 to 544,0416.64,0906.14,1705.7+129
55 to 593,9346.54,0976.14,5756.2+641
60 to 643,5295.84,1586.24,6546.3+1,125
65 to 693,1415.23,8095.73,9695.4+828
70 to 743,1595.23,3455.03,7035.0+544
75 to 792,1283.53,0954.63,7685.1+1,640
80 to 841,5032.52,6293.93,1674.3+1,664
85 and over1,3182.22,2703.44,2525.8+2,934
Total persons60,846100.067,378100.073,445100.0+12,599
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 City of Kalamunda was ages 10 to 14, which accounted for 7.2% 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 1,447 and account for 7.0% of the total persons.

The largest 5 year age group in 2031 is 20 to 24 years, with a total of 4,731 persons.

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