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City of SubiacoPopulation forecast

City of Subiaco

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Subiaco indicate a 19.3% increase in males under working age, a 22.9% increase in males of retirement age, and a 14.0% increase in males 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 Subiaco 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 Subiaco - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 44385.14995.06175.2+179
5 to 94785.55745.76885.8+210
10 to 145236.16446.47216.1+199
15 to 194385.16186.16975.9+259
20 to 244805.65475.46075.1+128
25 to 296407.47137.18086.8+168
30 to 346928.07467.49077.6+214
35 to 395966.97597.59488.0+352
40 to 445846.87247.28106.8+226
45 to 495556.46236.27025.9+147
50 to 545196.05645.66735.7+154
55 to 594935.74724.75904.9+96
60 to 645045.85065.06145.1+109
65 to 694965.75565.55774.8+81
70 to 745166.05115.15604.7+45
75 to 793023.53763.74573.8+155
80 to 842302.73193.23913.3+161
85 and over1491.73183.25494.6+400
Total persons8,631100.010,068100.011,916100.0+3,285
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), January 2024.

Key findings

In 2021, the dominant age structure for males in City of Subiaco was ages 30 to 34, which accounted for 8.0% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 15 to 19, which is expected to increase by 179 and account for 6.1% of the total males.

The largest male 5 year age group in 2031 is 35 to 39 years, with a total of 759 males.

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