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City of South PerthPopulation forecast

City of South Perth

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of South Perth indicate a 41.6% increase in females under working age, a 27.0% increase in females of retirement age, and a 19.7% increase in females 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 South 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.

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Forecast age structure - 5 year age groups
City of South Perth - Total females202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41,0284.51,2724.51,5634.4+535
5 to 99454.11,4965.31,7865.0+841
10 to 141,0764.71,5495.51,8395.2+763
15 to 191,1495.01,5665.51,8815.3+733
20 to 241,8017.92,0527.32,3736.7+573
25 to 291,7317.62,2518.02,8227.9+1,091
30 to 341,6867.42,3278.23,0588.6+1,371
35 to 391,6447.21,9947.02,6377.4+993
40 to 441,3465.91,7876.32,1346.0+787
45 to 491,3826.11,6445.81,9115.4+530
50 to 541,4296.31,4145.01,8825.3+453
55 to 591,4126.21,4635.21,9495.5+537
60 to 641,4216.21,4655.21,9315.4+510
65 to 691,4026.21,3554.81,5674.4+164
70 to 741,1375.01,3944.91,5434.3+406
75 to 797873.51,3814.91,6124.5+825
80 to 845862.61,0163.61,3773.9+791
85 and over8263.68733.11,7554.9+928
Total persons22,791100.028,299100.035,623100.0+12,831
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), March 2024.

Key findings

In 2021, the dominant age structure for females in City of South Perth was ages 20 to 24, which accounted for 7.9% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 30 to 34, which is expected to increase by 641 and account for 8.2% of the total females.

The largest female 5 year age group in 2031 is 30 to 34 years, with a total of 2,327 females.

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