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City of GosnellsPopulation forecast

Gosnells (Balance)

Population and age structure

Between 2021 and 2031, the age structure forecasts for Gosnells (Balance) indicate a 23.5% decrease in population under working age, a 140.9% increase in population of retirement age, and a 0.3% 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 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
Gosnells (Balance) - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 45797.64585.66255.9+45
5 to 96198.14425.45925.6-27
10 to 146658.85256.56245.9-41
15 to 194746.25977.46756.3+201
20 to 244606.15657.06926.5+233
25 to 294956.54926.17186.7+223
30 to 345587.45006.27407.0+182
35 to 396678.85206.47587.1+90
40 to 445677.55616.96976.5+129
45 to 494966.55426.76325.9+136
50 to 544646.14585.65965.6+132
55 to 594916.54395.45785.4+86
60 to 643855.13964.95325.0+146
65 to 693624.83974.94714.4+109
70 to 741842.43734.64414.1+258
75 to 79640.83284.04434.2+378
80 to 84510.72833.54043.8+354
85 and over120.22403.04264.0+414
Total persons7,593100.08,117100.010,643100.0+3,050
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), February 2024.

Key findings

In 2021, the dominant age structure for persons in Gosnells (Balance) was ages 35 to 39, which accounted for 8.8% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 75 to 79, which is expected to increase by 263 and account for 4.0% of the total persons.

The largest 5 year age group in 2031 is 15 to 19 years, with a total of 597 persons.

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