idc-logo
svg rectangle color
City of ArmadalePopulation forecast

Piara Waters

Population and age structure

Between 2021 and 2031, the age structure forecasts for Piara Waters indicate a 22.2% increase in population under working age, a 105.5% increase in population of retirement age, and a 33.7% 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 Armadale 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
Piara Waters - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41,89512.11,7798.61,6618.4-234
5 to 91,78011.42,07710.11,7718.9-9
10 to 141,1107.11,9939.71,6298.2+519
15 to 196814.41,7188.31,5407.8+859
20 to 247344.71,3546.61,4507.3+716
25 to 291,1767.51,1195.41,1976.0+21
30 to 341,92212.31,4737.11,4587.4-464
35 to 392,27114.61,9309.41,7198.7-552
40 to 441,3958.92,21610.71,7048.6+309
45 to 498375.41,9939.71,5237.7+686
50 to 545853.71,0255.01,1936.0+608
55 to 594162.75502.78834.5+467
60 to 643412.24742.38024.1+461
65 to 692221.43281.64142.1+192
70 to 741501.02031.02641.3+114
75 to 79410.31680.81630.8+122
80 to 84340.21360.71420.7+108
85 and over100.11040.52781.4+268
Total persons15,600100.020,641100.019,792100.0+4,192
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for persons in Piara Waters was ages 35 to 39, which accounted for 14.6% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 45 to 49, which is expected to increase by 1,156 and account for 9.7% of the total persons.

The largest 5 year age group in 2031 is 40 to 44 years, with a total of 2,216 persons.

DISCLAIMER: While all due care has been taken to ensure that the content of this website is accurate and current, there may be errors or omissions in it and no legal responsibility is accepted for the information and opinions in this website.

Please view our Privacy Policy, Terms of use and Legal notices.

ABS Data and the copyright in the ABS Data remains the property of the Australian Bureau of Statistics. The copyright in the way .id has modified, transformed or reconfigured the ABS Data as published on this website remains the property of .id. ABS Data can be accessed from the Australian Bureau of Statistics at www.abs.gov.au. ABS data can be used under license - terms published on ABS website. intermediary.management@abs.gov.au if you have any queries or wish to distribute any ABS data.