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City of GosnellsPopulation forecast

Martin (West)

Population and age structure

Between 2021 and 2031, the age structure forecasts for Martin (West) indicate a --% stable trend in males under working age, a 12.5% decrease in males of retirement age, and a 23.9% 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 Gosnells 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
Martin (West) - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 4295.3345.6355.6+7
5 to 9315.7335.4325.2+2
10 to 14468.6396.5355.6-11
15 to 19325.9447.2386.1+6
20 to 24122.2447.2396.2+27
25 to 29427.8386.3386.0-5
30 to 346512.1406.6426.7-24
35 to 39499.1437.2497.70
40 to 44417.7457.5457.1+3
45 to 49213.9447.3416.5+20
50 to 54101.9376.1386.0+28
55 to 59193.4294.8345.4+15
60 to 64315.8355.8396.2+8
65 to 69162.9345.7355.5+19
70 to 74285.2274.5335.2+5
75 to 7900.0203.4294.6+29
80 to 84275.0122.0182.8-9
85 and over417.650.8101.5-32
Total persons541100.0603100.0629100.0+88
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), February 2024.

Key findings

In 2021, the dominant age structure for males in Martin (West) was ages 30 to 34, which accounted for 12.1% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 20 to 24, which is expected to increase by 32 and account for 7.2% of the total males.

The largest male 5 year age group in 2031 is 40 to 44 years, with a total of 45 males.

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