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City of ArmadalePopulation forecast

Seville Grove

Population and age structure

Between 2021 and 2031, the age structure forecasts for Seville Grove indicate a 17.0% decrease in population under working age, a 26.7% increase in population of retirement age, and a 5.7% 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
Seville Grove - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41,0288.77776.58086.6-220
5 to 91,1779.98767.38697.1-308
10 to 141,0088.51,0158.59077.4-101
15 to 197986.71,19510.01,0168.3+218
20 to 247976.71,0108.49487.7+151
25 to 298637.37196.07756.3-88
30 to 341,0408.86865.77816.4-259
35 to 391,0839.18727.39437.7-140
40 to 448787.41,0478.89317.6+53
45 to 496905.89477.98557.0+165
50 to 546495.57075.97436.1+94
55 to 595584.75444.57456.1+187
60 to 644353.75074.26485.3+213
65 to 693262.84303.65134.2+187
70 to 742352.03032.53282.7+93
75 to 791201.01401.21941.6+74
80 to 84850.7820.71211.0+36
85 and over680.61020.81321.1+64
Total persons11,838100.011,955100.012,255100.0+417
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 Seville Grove was ages 5 to 9, which accounted for 9.9% 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 397 and account for 10.0% of the total persons.

The largest 5 year age group in 2031 is 15 to 19 years, with a total of 1,195 persons.

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