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City of MeltonPopulation forecast

Rockbank

Population and age structure

Between 2021 and 2036, the age structure forecasts for Rockbank indicate a 639.4% increase in population under working age, a 535.2% increase in population of retirement age, and a 525.4% 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
Rockbank - Total persons202120362043Change between 2021 and 2043
Age group (years)Number%Number%Number%Number
0 to 426910.21,6479.61,7388.5+1,469
5 to 91927.31,4898.71,7008.3+1,508
10 to 141023.91,0276.01,3536.6+1,251
15 to 19903.47724.51,0715.3+980
20 to 241847.01,0246.01,1265.5+942
25 to 2930511.61,4918.71,4747.2+1,169
30 to 3437814.42,01711.82,03910.0+1,661
35 to 3928010.71,92611.32,14310.5+1,863
40 to 441365.21,4308.41,7898.8+1,653
45 to 491294.91,0576.21,4507.1+1,320
50 to 541425.48174.81,1645.7+1,022
55 to 591003.86033.58764.3+776
60 to 641244.75453.27243.6+600
65 to 69742.84192.55672.8+493
70 to 74893.43181.94502.2+361
75 to 79200.82251.33291.6+309
80 to 8480.31480.92291.1+221
85 and over20.11160.71660.8+164
Total persons2,626100.017,071100.020,390100.0+17,764
Source: Population and household forecasts, 2021 to 2051, prepared by .id (informed decisions), April 2024.

Key findings

In 2021, the dominant age structure for persons in Rockbank was ages 30 to 34, which accounted for 14.4% of the total persons.

The largest increase in persons between 2021 and 2036 is forecast to be in ages 35 to 39, which is expected to increase by 1,646 and account for 11.3% of the total persons.

The largest 5 year age group in 2036 is 30 to 34 years, with a total of 2,017 persons.

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