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City of KnoxPopulation forecast

Wantirna South

Population and age structure

Between 2021 and 2023, the age structure forecasts for Wantirna South indicate a 1.0% increase in females under working age, a 2.9% increase in females of retirement age, and a 0.8% decrease 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 Knox 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
Wantirna South - Total females202120232046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 45184.85044.76394.4+121
5 to 95745.35695.37605.2+185
10 to 145505.15865.48255.6+275
15 to 195695.35855.48475.8+277
20 to 246536.05935.58305.7+177
25 to 295625.25895.47425.1+180
30 to 346646.26566.18495.8+185
35 to 397416.97446.99996.8+258
40 to 447126.67466.91,0577.2+344
45 to 496576.16686.21,0607.3+403
50 to 547136.67186.69916.8+278
55 to 596816.36335.89066.2+225
60 to 647887.37537.08726.0+84
65 to 696536.17016.57965.5+143
70 to 745415.05585.27054.8+164
75 to 794183.94474.16414.4+223
80 to 843182.93413.25283.6+210
85 and over4824.54364.05543.8+72
Total persons10,795100.010,828100.014,599100.0+3,804
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), June 2023.

Key findings

In 2021, the dominant age structure for females in Wantirna South was ages 60 to 64, which accounted for 7.3% of the total females.

The largest increase in females between 2021 and 2023 is forecast to be in ages 65 to 69, which is expected to increase by 48 and account for 6.5% of the total females.

The largest female 5 year age group in 2023 is 60 to 64 years, with a total of 753 females.

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