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City of BrimbankPopulation forecast

Sunshine West

Population and age structure

Between 2021 and 2031, the age structure forecasts for Sunshine West indicate a 14.6% increase in males under working age, a 12.1% decrease in males of retirement age, and a 18.3% 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 the City of Brimbank 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
Sunshine West - Total males202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 45455.76876.47276.2+182
5 to 95325.65995.66455.5+113
10 to 145285.55535.16225.3+94
15 to 194925.26095.76585.6+166
20 to 246546.98638.09107.8+256
25 to 299279.71,0479.71,1309.6+203
30 to 348028.49819.11,0699.1+267
35 to 397608.09278.69948.5+235
40 to 446226.57917.48727.4+250
45 to 495816.16846.47726.6+192
50 to 545625.96145.77226.2+160
55 to 595515.85735.36475.5+96
60 to 644544.84904.65334.5+79
65 to 693613.84203.94433.8+82
70 to 744234.43253.03573.0-66
75 to 793323.52472.32942.5-38
80 to 842222.32091.91781.5-44
85 and over1872.01401.31431.2-44
Total persons9,531100.010,760100.011,716100.0+2,185
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), July 2023.

Key findings

In 2021, the dominant age structure for males in Sunshine West was ages 25 to 29, which accounted for 9.7% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 20 to 24, which is expected to increase by 209 and account for 8.0% of the total males.

The largest male 5 year age group in 2031 is 25 to 29 years, with a total of 1,047 males.

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