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City of WhittleseaPopulation forecast

Donnybrook

Population and age structure

Between 2021 and 2031, the age structure forecasts for Donnybrook indicate a 890.0% increase in population under working age, a 6587.2% increase in population of retirement age, and a 928.6% 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 Whittlesea 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
Donnybrook - Total persons202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 427012.92,0348.63,9398.2+3,669
5 to 91889.01,9678.43,8177.9+3,629
10 to 141105.31,6226.93,2566.8+3,146
15 to 19391.91,1104.72,5035.2+2,464
20 to 241336.41,9868.43,1716.6+3,038
25 to 2929914.32,38810.13,7207.7+3,420
30 to 3439418.81,9348.23,7037.7+3,309
35 to 3931615.11,6647.13,6537.6+3,337
40 to 441326.31,5826.73,3567.0+3,224
45 to 49562.71,4776.33,0516.3+2,994
50 to 54472.21,3245.62,8155.8+2,768
55 to 59361.71,0314.42,4405.1+2,404
60 to 64361.78103.42,0574.3+2,021
65 to 69311.56782.91,7283.6+1,697
70 to 7430.15842.51,4903.1+1,487
75 to 7900.04862.11,2752.6+1,275
80 to 8400.03921.71,0572.2+1,057
85 and over50.24682.01,0942.3+1,089
Total persons2,095100.023,538100.048,123100.0+46,028
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), January 2023.

Key findings

In 2021, the dominant age structure for persons in Donnybrook was ages 30 to 34, which accounted for 18.8% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 25 to 29, which is expected to increase by 2,088 and account for 10.1% of the total persons.

The largest 5 year age group in 2031 is 25 to 29 years, with a total of 2,388 persons.

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