idc-logo
svg rectangle color
Alexandrina CouncilPopulation forecast

Hindmarsh Island - Mundoo Island

Population and age structure

Between 2021 and 2026, the age structure forecasts for Hindmarsh Island - Mundoo Island indicate a 16.3% increase in population under working age, a 35.5% increase in population of retirement age, and a 26.6% 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 Alexandrina Council 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
Hindmarsh Island - Mundoo Island - Total persons202120262041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 4613.3923.81113.3+50
5 to 9623.31014.21384.0+76
10 to 141296.91004.11494.4+20
15 to 19563.01054.41173.4+61
20 to 24452.4662.71002.9+55
25 to 29633.4602.5852.5+22
30 to 34633.4712.9892.6+26
35 to 39663.5793.3942.8+28
40 to 44683.6923.81113.3+43
45 to 49975.21014.21374.0+40
50 to 54864.61476.11835.4+97
55 to 591689.01787.42617.6+93
60 to 6420310.825910.73379.9+134
65 to 6924212.929112.140711.9+165
70 to 7425913.828811.940611.9+147
75 to 791598.524310.135810.5+199
80 to 84402.11164.82316.8+191
85 and over90.5231.0982.9+89
Total persons1,876100.02,411100.03,412100.0+1,536
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), February 2023.

Key findings

In 2021, the dominant age structure for persons in Hindmarsh Island - Mundoo Island was ages 70 to 74, which accounted for 13.8% of the total persons.

The largest increase in persons between 2021 and 2026 is forecast to be in ages 75 to 79, which is expected to increase by 84 and account for 10.1% of the total persons.

The largest 5 year age group in 2026 is 65 to 69 years, with a total of 291 persons.

DISCLAIMER: While all due care has been taken to ensure that the content of this website is accurate and current, there may be errors or omissions in it and no legal responsibility is accepted for the information and opinions in this website.

Please view our Privacy Policy, Terms of use and Legal notices.

ABS Data and the copyright in the ABS Data remains the property of the Australian Bureau of Statistics. The copyright in the way .id has modified, transformed or reconfigured the ABS Data as published on this website remains the property of .id. ABS Data can be accessed from the Australian Bureau of Statistics at www.abs.gov.au. ABS data can be used under license - terms published on ABS website. intermediary.management@abs.gov.au if you have any queries or wish to distribute any ABS data.