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Mount Barker District CouncilPopulation forecast

Mount Barker Growth Area

Population and age structure

Between 2021 and 2031, the age structure forecasts for Mount Barker Growth Area indicate a 268.2% increase in males under working age, a 1012.0% increase in males of retirement age, and a 258.6% 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 the Mount Barker District Council 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
Mount Barker Growth Area - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 425314.05197.27726.4+519
5 to 91106.15157.17736.4+663
10 to 14623.45317.47706.4+708
15 to 19673.74826.77506.2+683
20 to 241598.84356.06695.6+510
25 to 2928115.54976.97426.2+461
30 to 3422112.25818.08156.8+594
35 to 3918210.15307.37426.2+560
40 to 441166.45367.47526.2+636
45 to 49894.95127.17906.6+701
50 to 54683.84205.88306.9+762
55 to 59532.93544.97015.8+648
60 to 64563.12864.05995.0+543
65 to 69432.42603.64924.1+449
70 to 74281.62743.85004.2+472
75 to 7980.52303.24854.0+477
80 to 8480.41512.13793.1+371
85 and over50.31081.54904.1+485
Total persons1,808100.07,221100.012,049100.0+10,241
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for males in Mount Barker Growth Area was ages 25 to 29, which accounted for 15.5% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 10 to 14, which is expected to increase by 469 and account for 7.4% of the total males.

The largest male 5 year age group in 2031 is 30 to 34 years, with a total of 581 males.

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