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City of GosnellsPopulation forecast

City of Gosnells

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Gosnells indicate a 1.5% decrease in females under working age, a 35.6% increase in females of retirement age, and a 16.7% 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 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
City of Gosnells - Total females202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 44,4056.84,2055.65,4085.7+1,003
5 to 94,7197.34,2375.65,3125.6+593
10 to 144,2966.64,7836.45,4565.8+1,160
15 to 193,9056.05,3537.15,6856.0+1,780
20 to 244,2006.55,6817.66,4016.8+2,201
25 to 294,2776.65,3127.16,7487.2+2,471
30 to 344,9527.64,9386.66,6167.0+1,664
35 to 395,3608.35,0036.76,6777.1+1,317
40 to 444,6717.25,4647.36,3006.7+1,629
45 to 494,1836.45,5277.45,9746.4+1,791
50 to 543,9496.14,5596.15,6476.0+1,698
55 to 593,4935.43,9075.25,4655.8+1,972
60 to 643,2535.03,5714.84,9725.3+1,719
65 to 692,8214.33,1414.23,9024.1+1,081
70 to 742,4853.82,9904.03,5333.8+1,048
75 to 791,6342.52,6553.53,3243.5+1,690
80 to 841,1461.82,0262.72,8223.0+1,676
85 and over1,1791.81,7532.33,8034.0+2,624
Total persons64,928100.075,105100.094,045100.0+29,117
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), February 2024.

Key findings

In 2021, the dominant age structure for females in City of Gosnells was ages 35 to 39, which accounted for 8.3% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 20 to 24, which is expected to increase by 1,481 and account for 7.6% of the total females.

The largest female 5 year age group in 2031 is 20 to 24 years, with a total of 5,681 females.

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