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Cumberland CouncilPopulation forecast

Girraween - Toongabbie

Population and age structure

Between 2016 and 2026, the age structure forecasts for Girraween - Toongabbie indicate a 30.8% increase in population under working age, a 44.2% increase in population of retirement age, and a 35.0% 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 Girraween - Toongabbie 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 persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 46968.98658.29088.0+212
5 to 97049.08788.38727.7+168
10 to 145246.77747.37706.8+246
15 to 194265.46866.57086.3+282
20 to 244225.45935.66655.9+243
25 to 295206.76586.27296.4+209
30 to 347509.68508.18747.7+124
35 to 3990011.59178.78998.0-1
40 to 446378.18768.38487.5+211
45 to 494375.68478.07927.0+355
50 to 543624.66235.97166.3+354
55 to 593754.84434.26505.7+275
60 to 642723.53913.75354.7+263
65 to 693114.03843.64073.6+96
70 to 741852.42502.43102.7+125
75 to 791301.72182.12632.3+133
80 to 84981.31451.41831.6+85
85 and over680.91451.41781.6+110
Total persons7,817100.010,543100.011,306100.0+3,489
Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, September 2017.

Key findings

In 2016, the dominant age structure for persons in Girraween - Toongabbie was ages 35 to 39, which accounted for 11.5% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 45 to 49, which is expected to increase by 410 and account for 8.0% of the total persons.

The largest 5 year age group in 2026 is 35 to 39 years, with a total of 917 persons.

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