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Shire of DardanupPopulation forecast

Shire of Dardanup

Population and age structure

Between 2021 and 2031, the age structure forecasts for Shire of Dardanup indicate a 5.0% increase in population under working age, a 81.8% increase in population of retirement age, and a 22.8% 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 Shire of Dardanup 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
Shire of Dardanup - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41,0486.81,1855.91,6595.6+610
5 to 91,1397.41,1735.91,6685.6+529
10 to 141,0506.81,0405.21,4895.0+438
15 to 198645.61,0355.21,3084.4+444
20 to 247494.98924.51,1754.0+426
25 to 299446.11,0305.21,4294.8+486
30 to 341,0716.91,2836.41,9486.6+877
35 to 391,0386.71,2786.41,8756.3+838
40 to 441,0226.61,2236.11,6685.6+647
45 to 499125.91,2886.41,8086.1+896
50 to 541,0256.61,1535.81,7185.8+692
55 to 599506.21,1595.81,7475.9+797
60 to 649246.01,3286.61,8596.3+935
65 to 697995.21,3016.51,8336.2+1,034
70 to 747054.61,1865.91,7505.9+1,045
75 to 794773.11,0045.01,7445.9+1,267
80 to 843882.58024.01,3994.7+1,011
85 and over3302.16153.11,5315.2+1,201
Total persons15,434100.019,976100.029,607100.0+14,174
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 Shire of Dardanup was ages 5 to 9, which accounted for 7.4% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 75 to 79, which is expected to increase by 528 and account for 5.0% of the total persons.

The largest 5 year age group in 2031 is 60 to 64 years, with a total of 1,328 persons.

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