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City of SubiacoPopulation forecast

Subiaco (North)

Population and age structure

Between 2021 and 2031, the age structure forecasts for Subiaco (North) indicate a 173.8% increase in males under working age, a 32.8% increase in males of retirement age, and a 32.9% 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
Subiaco (North) - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 4845.21496.22216.0+137
5 to 9442.71867.72617.1+218
10 to 14593.71777.32607.0+201
15 to 19674.11405.82366.4+169
20 to 241046.41446.02085.6+104
25 to 2919812.224410.13008.1+103
30 to 3419812.22058.52897.8+91
35 to 391247.61787.42807.6+156
40 to 441126.91596.62376.4+125
45 to 49513.11375.62095.7+158
50 to 54935.81205.02045.5+111
55 to 59905.6943.91754.7+84
60 to 641026.3933.91664.5+64
65 to 69986.01004.21464.0+48
70 to 741106.8964.01453.9+35
75 to 79402.5743.01193.2+79
80 to 84362.2632.61022.8+66
85 and over120.7602.51373.7+125
Total persons1,621100.02,419100.03,693100.0+2,072
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 Subiaco (North) was ages 25 to 29, which accounted for 12.2% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 5 to 9, which is expected to increase by 142 and account for 7.7% of the total males.

The largest male 5 year age group in 2031 is 25 to 29 years, with a total of 244 males.

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