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Cumberland City CouncilPopulation forecast

Girraween - Toongabbie

Population and age structure

Between 2021 and 2026, the age structure forecasts for Girraween - Toongabbie indicate a 22.4% increase in females under working age, a 7.9% increase in females of retirement age, and a 7.3% increase in females 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 Cumberland City Council 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
Girraween - Toongabbie - Total females202120262036Change between 2021 and 2036
Age group (years)Number%Number%Number%Number
0 to 43848.353110.35269.4+142
5 to 946210.051310.057410.2+112
10 to 143387.34057.94698.4+131
15 to 192094.52875.63446.1+135
20 to 241884.11973.82654.7+77
25 to 293056.62735.32915.2-14
30 to 3447910.35029.84718.4-8
35 to 3965114.157811.256410.0-87
40 to 443888.44969.64588.2+70
45 to 492254.93256.33796.7+154
50 to 541813.92074.03406.1+159
55 to 591483.21633.22384.2+90
60 to 641663.61282.51552.8-11
65 to 691292.81482.91262.2-3
70 to 741262.71202.31092.0-17
75 to 791032.21142.21232.2+20
80 to 84741.6841.6891.6+15
85 and over731.6791.5911.6+18
Total persons4,629100.05,150100.05,612100.0+983
Source: Population and household forecasts, 2021 to 2036, prepared by .id (informed decisions), March 2023.

Key findings

In 2021, the dominant age structure for females in Girraween - Toongabbie was ages 35 to 39, which accounted for 14.1% of the total females.

The largest increase in females between 2021 and 2026 is forecast to be in ages 0 to 4, which is expected to increase by 147 and account for 10.3% of the total females.

The largest female 5 year age group in 2026 is 35 to 39 years, with a total of 578 females.

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