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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 28.4% increase in females under working age, a 25.6% increase in females of retirement age, and a 36.9% 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 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 females202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 44274.65504.46774.5+250
5 to 94815.26104.97294.8+248
10 to 145265.76815.58005.3+274
15 to 193834.17766.38775.8+494
20 to 245906.39167.41,0176.7+427
25 to 297287.89617.81,1167.3+387
30 to 347287.88707.01,0637.0+335
35 to 396667.28516.91,0436.9+377
40 to 446557.09417.61,0647.0+410
45 to 495776.29357.51,0577.0+480
50 to 545666.17275.99396.2+373
55 to 595535.96104.98935.9+340
60 to 645355.75984.88175.4+282
65 to 695435.85194.26654.4+122
70 to 744715.15714.66414.2+170
75 to 793453.74843.95853.8+240
80 to 842652.83983.25043.3+239
85 and over2622.83963.27074.7+445
Total persons9,301100.012,396100.015,194100.0+5,893
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), January 2024.

Key findings

In 2021, the dominant age structure for females in City of Subiaco was ages 25 to 29, which accounted for 7.8% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 15 to 19, which is expected to increase by 393 and account for 6.3% of the total females.

The largest female 5 year age group in 2031 is 25 to 29 years, with a total of 961 females.

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