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City of KnoxPopulation forecast


Population and age structure

Between 2016 and 2026, the age structure forecasts for Wantirna indicate a 22.8% increase in males under working age, a 33.5% increase in males of retirement age, and a 7.3% increase 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 Wantirna 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 - Total males201620262041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 44105.84926.14575.7+47
5 to 94596.65466.85056.3+45
10 to 143835.55006.24856.0+102
15 to 194155.94856.14826.0+66
20 to 244826.94505.64685.8-14
25 to 294125.94445.54285.3+16
30 to 344866.95246.54725.9-14
35 to 394826.95597.05236.5+41
40 to 444336.25677.15266.5+93
45 to 494576.55266.65276.6+70
50 to 544145.94695.85066.3+92
55 to 594696.74725.95056.3+36
60 to 645267.54145.24575.7-69
65 to 694756.84125.14055.0-70
70 to 742633.84155.23694.6+106
75 to 791862.73434.33013.8+116
80 to 841171.72002.52913.6+174
85 and over1361.92012.53274.1+191
Total persons7,006100.08,019100.08,033100.0+1,027
Source: Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), May 2018.

Key findings

In 2016, the dominant age structure for males in Wantirna was ages 60 to 64, which accounted for 7.5% of the total males.

The largest increase in males between 2016 and 2026 is forecast to be in ages 75 to 79, which is expected to increase by 157 and account for 4.3% of the total males.

The largest male 5 year age group in 2026 is 40 to 44 years, with a total of 567 males.

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