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City of KwinanaPopulation forecast

Kwinana Central District

Population and age structure

Between 2016 and 2026, the age structure forecasts for Kwinana Central District indicate a 45.2% increase in population under working age, a 21.2% increase in population of retirement age, and a 35.8% 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 Kwinana Central District 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
Kwinana Central District - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 41,1307.21,8168.51,8758.0+745
5 to 91,0786.91,5027.11,6507.1+572
10 to 149135.81,2155.71,4326.1+519
15 to 199315.91,2375.81,3956.0+464
20 to 241,0947.01,5187.11,5766.8+482
25 to 291,1037.01,8238.61,7987.7+695
30 to 341,1657.41,7168.11,7417.5+576
35 to 391,0326.61,4837.01,6166.9+584
40 to 441,0816.91,4346.71,5476.6+466
45 to 491,0856.91,2976.11,4716.3+386
50 to 549636.11,1855.61,3785.9+415
55 to 598855.61,1175.31,2445.3+359
60 to 648155.29754.61,1184.8+303
65 to 697234.68303.99834.2+260
70 to 745823.77213.48443.6+262
75 to 795013.26062.97033.0+202
80 to 843562.33641.74582.0+102
85 and over2741.74312.04872.1+213
Total persons15,711100.021,270100.023,318100.0+7,607
Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, March 2018.

Key findings

In 2016, the dominant age structure for persons in Kwinana Central District was ages 30 to 34, which accounted for 7.4% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 25 to 29, which is expected to increase by 720 and account for 8.6% of the total persons.

The largest 5 year age group in 2026 is 25 to 29 years, with a total of 1,823 persons.

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