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City of MeltonPopulation forecast

Bonnie Brook

Population and age structure

Between 2021 and 2031, the age structure forecasts for Bonnie Brook indicate a 1664.0% increase in population under working age, a 1339.4% increase in population of retirement age, and a 1048.2% 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 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 persons202120312051Change between 2021 and 2051
Age group (years)Number%Number%Number%Number
0 to 484.81788.01,7737.9+1,765
5 to 9127.31637.31,4756.6+1,462
10 to 1452.71004.51,0214.5+1,016
15 to 19127.2753.49174.1+905
20 to 24148.3974.41,2085.4+1,194
25 to 291911.11516.81,9498.7+1,930
30 to 341810.526211.82,80012.5+2,782
35 to 39116.429513.32,61511.7+2,604
40 to 44116.31366.11,5006.7+1,489
45 to 4984.7763.48393.7+831
50 to 5452.6572.65672.5+562
55 to 5974.1612.78103.6+804
60 to 6495.1994.47833.5+775
65 to 69179.9994.51,0204.5+1,003
70 to 7463.31526.81,0134.5+1,007
75 to 7963.61074.89964.4+990
80 to 8421.2803.66442.9+642
85 and over20.9371.75142.3+513
Total persons171100.02,224100.022,446100.0+22,275
Source: Population and household forecasts, 2021 to 2051, prepared by .id (informed decisions), June 2023.

Key findings

In 2021, the dominant age structure for persons in Bonnie Brook was ages 25 to 29, which accounted for 11.1% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 35 to 39, which is expected to increase by 284 and account for 13.3% of the total persons.

The largest 5 year age group in 2031 is 35 to 39 years, with a total of 295 persons.

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