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City of GosnellsPopulation forecast

Southern River (East)

Population and age structure

Between 2021 and 2031, the age structure forecasts for Southern River (East) indicate a 135.2% increase in males under working age, a 165.9% increase in males of retirement age, and a 211.8% 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
Southern River (East) - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 411610.82628.67778.4+661
5 to 91009.32377.77097.7+609
10 to 14948.82307.56457.0+551
15 to 19575.32297.56116.6+554
20 to 24474.42638.66947.5+647
25 to 29706.52488.17237.8+653
30 to 3411110.42257.37157.8+604
35 to 3914413.42528.28349.0+690
40 to 44807.52548.37768.4+696
45 to 49716.62197.16406.9+569
50 to 54403.71785.85616.1+521
55 to 59444.11374.54625.0+418
60 to 64131.21063.43583.9+345
65 to 69312.9832.72472.7+216
70 to 74282.6632.01882.0+160
75 to 79222.1441.41421.5+120
80 to 8440.4230.8760.8+72
85 and over00.0130.4580.6+58
Total persons1,072100.03,066100.09,216100.0+8,144
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 Southern River (East) was ages 35 to 39, which accounted for 13.4% 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 216 and account for 8.6% of the total males.

The largest male 5 year age group in 2031 is 20 to 24 years, with a total of 263 males.

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