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City of MeltonPopulation forecast

Bonnie Brook

Population and age structure

Between 2021 and 2036, the age structure forecasts for Bonnie Brook indicate a 1405.6% increase in males under working age, a 1969.2% increase in males of retirement age, and a 1300.0% 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 Melton 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
Bonnie Brook - Total males202120362051Change between 2021 and 2051
Age group (years)Number%Number%Number%Number
0 to 455.8896.39327.6+927
5 to 91010.2946.78336.8+824
10 to 1432.8886.36605.4+657
15 to 1988.7825.87195.8+711
20 to 2499.7825.88196.7+810
25 to 29910.01168.21,1589.4+1,148
30 to 341112.114710.41,63313.3+1,621
35 to 3954.914710.41,40311.4+1,398
40 to 4455.61289.17686.2+763
45 to 4955.1574.13773.1+373
50 to 5411.1302.12071.7+206
55 to 5911.2392.83462.8+345
60 to 6489.0402.84823.9+474
65 to 6999.9725.17025.7+693
70 to 7411.1644.54753.9+474
75 to 7921.9846.03412.8+340
80 to 8411.1282.02331.9+232
85 and over00.0211.52051.7+205
Total persons95100.01,407100.012,293100.0+12,199
Source: Population and household forecasts, 2021 to 2051, prepared by .id (informed decisions), April 2024.

Key findings

In 2021, the dominant age structure for males in Bonnie Brook was ages 30 to 34, which accounted for 12.1% of the total males.

The largest increase in males between 2021 and 2036 is forecast to be in ages 35 to 39, which is expected to increase by 142 and account for 10.4% of the total males.

The largest male 5 year age group in 2036 is 30 to 34 years, with a total of 147 males.

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