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City of GosnellsPopulation forecast

Southern River (West)

Population and age structure

Between 2016 and 2026, the age structure forecasts for Southern River (West) indicate a 15.7% increase in population under working age, a 139.2% increase in population of retirement age, and a 42.5% 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 Southern River (West) 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
Southern River (West) - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 48989.61,0247.99377.2+39
5 to 98939.69757.59247.1+31
10 to 147628.29557.38746.7+112
15 to 196727.29357.28596.6+187
20 to 245576.09807.59347.1+377
25 to 296016.41,1038.51,0007.6+399
30 to 348629.21,1719.01,0538.0+191
35 to 399189.81,0337.99787.5+60
40 to 448088.79016.98626.6+54
45 to 496677.28916.88346.4+167
50 to 545646.18106.27896.0+225
55 to 593994.36605.17375.6+338
60 to 642843.05394.16545.0+370
65 to 692202.43923.05354.1+315
70 to 741221.32832.24483.4+326
75 to 79360.42121.63352.6+299
80 to 84320.31020.82071.6+175
85 and over260.3540.41240.9+98
Total persons9,321100.013,019100.013,086100.0+3,765
Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, April 2018.

Key findings

In 2016, the dominant age structure for persons in Southern River (West) was ages 35 to 39, which accounted for 9.8% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 25 to 29, which is expected to increase by 502 and account for 8.5% of the total persons.

The largest 5 year age group in 2026 is 30 to 34 years, with a total of 1,171 persons.

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