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City of CockburnPopulation forecast

City of Cockburn

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Cockburn indicate a 21.1% increase in population under working age, a 52.1% increase in population of retirement age, and a 16.8% 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 the City of Cockburn 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 Cockburn - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 48,3096.89,8446.611,3896.4+3,080
5 to 98,0476.610,1116.811,2976.3+3,250
10 to 147,6426.39,1126.110,1315.7+2,489
15 to 196,7435.58,9366.09,7525.5+3,009
20 to 247,8646.49,9826.710,7096.0+2,845
25 to 298,6587.19,9556.711,4456.4+2,787
30 to 3410,2248.410,4047.012,4807.0+2,256
35 to 3910,2478.410,5507.112,9697.3+2,722
40 to 448,8997.310,9727.311,9406.7+3,041
45 to 498,4226.910,3997.010,7716.0+2,349
50 to 547,8686.48,9526.010,2815.8+2,413
55 to 597,0915.88,2795.510,3705.8+3,279
60 to 646,1745.17,6005.19,9465.6+3,772
65 to 695,1664.26,6484.48,0054.5+2,839
70 to 744,2673.55,9044.07,3834.1+3,116
75 to 792,7672.34,9253.36,9733.9+4,206
80 to 842,0201.73,8002.55,7433.2+3,723
85 and over1,8031.53,0912.16,7723.8+4,969
Total persons122,211100.0149,462100.0178,353100.0+56,142
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for persons in City of Cockburn was ages 35 to 39, which accounted for 8.4% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 15 to 19, which is expected to increase by 2,193 and account for 6.0% of the total persons.

The largest 5 year age group in 2031 is 40 to 44 years, with a total of 10,972 persons.

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