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City of DarebinPopulation forecast

Reservoir

Population and age structure

Between 2021 and 2031, the age structure forecasts for Reservoir indicate a 22.5% increase in males under working age, a 8.7% increase in males of retirement age, and a 19.4% 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 Darebin 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
Reservoir - Total males202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 41,6606.51,9326.42,0496.2+389
5 to 91,3475.31,6975.61,7885.4+441
10 to 141,1684.61,4854.91,5854.8+417
15 to 191,0644.21,4744.91,6345.0+570
20 to 241,7106.72,0396.82,2166.7+507
25 to 292,3769.42,6298.72,8278.6+451
30 to 342,58210.22,8159.42,9719.0+390
35 to 392,2859.02,7639.22,8768.7+591
40 to 441,6766.62,6028.72,7148.2+1,038
45 to 491,6546.52,1947.32,4357.4+781
50 to 541,5506.11,5965.32,1286.5+578
55 to 591,3355.31,4134.71,7415.3+406
60 to 641,1904.71,2694.21,3084.0+118
65 to 699543.81,0713.61,1293.4+175
70 to 748473.38212.78842.7+37
75 to 797212.87342.48562.6+135
80 to 846102.46722.28002.4+190
85 and over6782.78422.81,0033.0+326
Total persons25,406100.030,048100.032,945100.0+7,539
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), November 2022.

Key findings

In 2021, the dominant age structure for males in Reservoir was ages 30 to 34, which accounted for 10.2% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 926 and account for 8.7% of the total males.

The largest male 5 year age group in 2031 is 30 to 34 years, with a total of 2,815 males.

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