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Shire of Serpentine JarrahdalePopulation forecast

Byford area

Population and age structure

Between 2021 and 2031, the age structure forecasts for Byford area indicate a 43.0% increase in males under working age, a 122.8% increase in males of retirement age, and a 95.9% 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 Shire of Serpentine Jarrahdale 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
Byford area - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41,07611.21,4968.61,9718.1+895
5 to 91,01410.51,3968.01,8437.6+829
10 to 148418.71,2987.41,6246.7+783
15 to 195615.81,1576.61,4395.9+878
20 to 244935.11,1756.71,3715.6+878
25 to 297067.31,3277.61,6046.6+899
30 to 349499.91,5939.12,0288.3+1,079
35 to 399509.91,4408.22,0688.5+1,118
40 to 447157.41,4088.11,8897.8+1,174
45 to 495395.61,2547.21,7067.0+1,167
50 to 544845.01,0265.91,5926.6+1,109
55 to 593763.98244.71,4375.9+1,061
60 to 642883.06683.81,1614.8+872
65 to 692082.25893.49313.8+723
70 to 742042.13892.26772.8+474
75 to 79941.01731.03801.6+286
80 to 84840.91490.92981.2+215
85 and over410.41060.62731.1+233
Total persons9,622100.017,467100.024,292100.0+14,671
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 Byford area was ages 0 to 4, which accounted for 11.2% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 45 to 49, which is expected to increase by 715 and account for 7.2% of the total males.

The largest male 5 year age group in 2031 is 30 to 34 years, with a total of 1,593 males.

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