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Mount Barker District CouncilPopulation forecast

Mount Barker District Council

Population and age structure

Between 2021 and 2031, the age structure forecasts for Mount Barker District Council indicate a 27.7% increase in population under working age, a 55.6% increase in population of retirement age, and a 30.4% increase in population 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 District Council - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 42,5476.43,2136.03,8045.9+1,257
5 to 92,5716.53,3826.43,8846.0+1,313
10 to 142,7186.93,4096.43,8756.0+1,157
15 to 192,3676.03,4056.43,8405.9+1,472
20 to 242,3455.93,2696.13,6145.6+1,269
25 to 292,5006.33,1746.03,7745.8+1,274
30 to 342,5716.53,1886.03,7605.8+1,189
35 to 392,6756.83,2936.23,8195.9+1,144
40 to 442,4366.13,6376.83,9466.1+1,510
45 to 492,6396.73,5166.64,0236.2+1,384
50 to 542,6776.83,0915.84,2756.6+1,598
55 to 592,4446.23,0775.84,0456.2+1,601
60 to 642,3135.82,9025.53,6595.6+1,346
65 to 692,1525.42,7895.23,1874.9+1,035
70 to 741,9204.82,6405.03,0814.8+1,161
75 to 791,2803.22,1334.02,8154.3+1,535
80 to 847441.91,6083.02,2613.5+1,517
85 and over7191.81,4332.73,1744.9+2,455
Total persons39,620100.053,158100.064,838100.0+25,219
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for persons in Mount Barker District Council was ages 10 to 14, which accounted for 6.9% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 1,201 and account for 6.8% of the total persons.

The largest 5 year age group in 2031 is 40 to 44 years, with a total of 3,637 persons.

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