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City of JoondalupPopulation forecast

South-West Ward

Population and age structure

Between 2021 and 2031, the age structure forecasts for South-West Ward indicate a 3.7% decrease in males under working age, a 35.7% increase in males of retirement age, and a 0.4% 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 Joondalup 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
South-West Ward - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 47745.57224.87084.7-66
5 to 98816.29296.28815.80
10 to 141,0667.59706.58775.8-189
15 to 199606.89486.38495.6-111
20 to 248035.71,0396.99066.0+103
25 to 296094.37595.07545.0+145
30 to 346904.96314.26854.5-5
35 to 398776.28095.48475.6-30
40 to 449096.41,0296.89376.2+28
45 to 499937.01,0206.88975.9-96
50 to 541,0077.18385.68255.4-182
55 to 599216.58445.68385.5-83
60 to 649606.88495.68155.4-145
65 to 698726.27845.26814.5-191
70 to 748856.38145.47314.8-154
75 to 795053.67615.17535.0+248
80 to 842481.87204.87284.8+480
85 and over1791.35703.81,4359.5+1,256
Total persons14,139100.015,036100.015,146100.0+1,007
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), March 2024.

Key findings

In 2021, the dominant age structure for males in South-West Ward was ages 10 to 14, which accounted for 7.5% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 80 to 84, which is expected to increase by 472 and account for 4.8% of the total males.

The largest male 5 year age group in 2031 is 20 to 24 years, with a total of 1,039 males.

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