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City of AdelaidePopulation forecast

CAD East

Population and age structure

Between 2021 and 2031, the age structure forecasts for CAD East indicate a 103.4% increase in population under working age, a 45.3% increase in population of retirement age, and a 14.1% 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 Adelaide 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
CAD East - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 4451.2982.11222.1+77
5 to 9691.8681.5781.3+10
10 to 1450.1761.7951.6+90
15 to 192356.23928.64257.3+190
20 to 241,03327.369615.379813.7-235
25 to 2973919.560913.376913.2+30
30 to 343489.247410.463110.9+283
35 to 392396.33948.64908.4+251
40 to 441764.63417.54137.1+238
45 to 491413.72956.53786.5+236
50 to 541273.31974.33115.4+184
55 to 59982.61593.52464.2+148
60 to 641173.11563.42293.9+112
65 to 691734.61783.92203.8+47
70 to 74992.61583.52043.5+105
75 to 79721.91282.81522.6+80
80 to 84441.2651.41001.7+56
85 and over310.8801.81502.6+119
Total persons3,791100.04,563100.05,811100.0+2,021
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for persons in CAD East was ages 20 to 24, which accounted for 27.3% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 165 and account for 7.5% of the total persons.

The largest 5 year age group in 2031 is 20 to 24 years, with a total of 696 persons.

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