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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 23.9% increase in population under working age, a 24.3% increase in population of retirement age, and a 25.9% 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 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 persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 48654.81,0494.71,2944.8+429
5 to 99595.31,1845.31,4165.2+458
10 to 141,0495.91,3265.91,5225.6+472
15 to 198214.61,3946.21,5745.8+753
20 to 241,0706.01,4636.51,6246.0+555
25 to 291,3687.61,6747.51,9247.1+556
30 to 341,4207.91,6167.21,9697.3+549
35 to 391,2627.01,6107.21,9917.3+729
40 to 441,2386.91,6657.41,8746.9+636
45 to 491,1326.31,5596.91,7596.5+628
50 to 541,0856.01,2925.71,6125.9+527
55 to 591,0465.81,0824.81,4835.5+437
60 to 641,0395.81,1054.91,4315.3+391
65 to 691,0395.81,0754.81,2424.6+203
70 to 749875.51,0824.81,2014.4+215
75 to 796463.68603.81,0423.8+395
80 to 844952.87173.28953.3+400
85 and over4112.37143.21,2564.6+845
Total persons17,932100.022,464100.027,109100.0+9,177
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), January 2024.

Key findings

In 2021, the dominant age structure for persons in City of Subiaco was ages 30 to 34, which accounted for 7.9% 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 572 and account for 6.2% of the total persons.

The largest 5 year age group in 2031 is 25 to 29 years, with a total of 1,674 persons.

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