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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 66.9% increase in females under working age, a 29.2% increase in females of retirement age, and a 46.7% increase in females 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 females202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 42445.84617.65277.3+283
5 to 92195.23956.54766.6+257
10 to 142455.93265.34245.8+178
15 to 191643.92323.83174.4+153
20 to 242095.02984.93314.6+122
25 to 293257.84717.75016.9+175
30 to 343247.75238.65717.9+247
35 to 392385.74567.55237.2+285
40 to 442195.23716.14546.3+234
45 to 492044.93065.04155.7+210
50 to 542696.42964.83905.4+120
55 to 592115.02714.43324.6+121
60 to 642626.23335.53474.8+86
65 to 692666.43515.73955.4+129
70 to 742866.83575.84165.7+130
75 to 792275.43004.93635.0+136
80 to 841413.42383.92904.0+149
85 and over1333.21151.91792.5+46
Total persons4,188100.06,102100.07,249100.0+3,061
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), February 2023.

Key findings

In 2021, the dominant age structure for females in Bacchus Marsh was ages 25 to 29, which accounted for 7.8% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 35 to 39, which is expected to increase by 218 and account for 7.5% of the total females.

The largest female 5 year age group in 2031 is 30 to 34 years, with a total of 523 females.

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