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City of CaseyPopulation forecast

Narre Warren South

Population and age structure

Between 2021 and 2036, the age structure forecasts for Narre Warren South indicate a 2.0% decrease in males under working age, a 77.8% increase in males of retirement age, and a 3.9% decrease 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 Casey 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
Narre Warren South - Total males202120362046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 49836.31,0666.61,0846.5+101
5 to 91,1767.51,1657.21,1877.1+11
10 to 141,4179.11,2727.91,2977.8-120
15 to 191,4209.11,3148.11,3548.1-66
20 to 241,3618.71,2727.91,2987.8-64
25 to 291,0356.61,0416.51,0506.3+15
30 to 348655.59515.99695.8+104
35 to 399756.21,0246.41,0456.3+70
40 to 441,0556.81,0356.41,0586.3+2
45 to 491,2157.81,0236.31,0586.3-157
50 to 541,1557.49906.11,0176.1-138
55 to 599526.18935.58955.4-58
60 to 647514.88185.17564.5+5
65 to 695093.36884.36413.8+132
70 to 743342.15503.45933.6+258
75 to 792371.54612.95503.3+314
80 to 841260.83071.94302.6+304
85 and over650.42541.64032.4+338
Total persons15,632100.016,125100.016,683100.0+1,052
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), October 2023.

Key findings

In 2021, the dominant age structure for males in Narre Warren South was ages 15 to 19, which accounted for 9.1% of the total males.

The largest increase in males between 2021 and 2036 is forecast to be in ages 75 to 79, which is expected to increase by 224 and account for 2.9% of the total males.

The largest male 5 year age group in 2036 is 15 to 19 years, with a total of 1,314 males.

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