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City of PerthPopulation forecast

City of Perth

Population and age structure

Between 2016 and 2026, the age structure forecasts for City of Perth indicate a 34.9% increase in population under working age, a 44.4% increase in population of retirement age, and a 31.1% 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 Perth 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 Perth - Total persons201620262041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 48893.31,1373.21,5603.2+671
5 to 94091.55441.57181.5+309
10 to 142941.14671.36261.3+333
15 to 191,3244.92,8097.93,3786.9+2,054
20 to 243,95014.75,90516.57,60415.5+3,654
25 to 295,01418.65,72416.08,03316.4+3,019
30 to 344,15215.44,67513.16,58313.4+2,431
35 to 392,1948.13,0138.44,1268.4+1,933
40 to 441,3585.02,0965.92,7795.7+1,420
45 to 491,2254.51,6554.62,3554.8+1,130
50 to 541,1954.41,4033.92,0874.3+893
55 to 591,1304.21,2783.61,8863.8+755
60 to 641,1504.31,1963.31,6503.4+500
65 to 699763.61,0783.01,4493.0+474
70 to 746812.51,0052.81,3322.7+651
75 to 794681.78372.31,2302.5+762
80 to 842591.05051.49161.9+658
85 and over2831.04271.27951.6+512
Total persons26,950100.035,753100.049,107100.0+22,158
Source: Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), May 2020.

Key findings

In 2016, the dominant age structure for persons in City of Perth was ages 25 to 29, which accounted for 18.6% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 20 to 24, which is expected to increase by 1,955 and account for 16.5% of the total persons.

The largest 5 year age group in 2026 is 20 to 24 years, with a total of 5,905 persons.

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