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Moorabool ShirePopulation forecast

Bacchus Marsh

Population and age structure

Between 2021 and 2031, the age structure forecasts for Bacchus Marsh indicate a 72.9% increase in males under working age, a 26.3% increase in males of retirement age, and a 41.8% 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 Moorabool Shire 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
Bacchus Marsh - Total males202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 42516.75039.35749.0+323
5 to 92276.14207.85077.9+280
10 to 142426.53226.04326.8+190
15 to 192005.42584.83485.5+148
20 to 241794.82815.23165.0+136
25 to 292998.04167.74436.9+144
30 to 343308.94899.15358.4+204
35 to 392657.14718.75318.3+266
40 to 441885.03556.64296.7+241
45 to 492005.42604.83605.6+160
50 to 542045.52254.23225.1+118
55 to 592175.82504.62854.5+68
60 to 642165.82534.72664.2+50
65 to 692095.62464.62714.2+61
70 to 742246.02194.12493.9+26
75 to 791594.31803.32123.3+53
80 to 84912.51522.81662.6+75
85 and over230.6951.81352.1+112
Total persons3,724100.05,394100.06,381100.0+2,657
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), February 2023.

Key findings

In 2021, the dominant age structure for males in Bacchus Marsh was ages 30 to 34, which accounted for 8.9% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 0 to 4, which is expected to increase by 252 and account for 9.3% of the total males.

The largest male 5 year age group in 2031 is 0 to 4 years, with a total of 503 males.

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