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City of AdelaidePopulation forecast

City of Adelaide

Population and age structure

Between 2016 and 2031, the age structure forecasts for City of Adelaide indicate a 46.0% increase in population under working age, a 58.7% increase in population of retirement age, and a 66.7% 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
City of Adelaide - Total persons201620312041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 45842.57892.09732.0+389
5 to 94361.95991.57501.6+314
10 to 143541.56181.67861.6+432
15 to 191,7557.55,11813.26,19912.8+4,444
20 to 244,95821.18,71222.510,74722.2+5,789
25 to 293,26613.94,96212.86,26713.0+3,001
30 to 342,2589.63,2568.44,1078.5+1,849
35 to 391,3855.92,1015.42,6245.4+1,239
40 to 441,0944.61,5834.11,9814.1+887
45 to 491,0694.51,5324.01,8773.9+808
50 to 541,1955.11,5964.11,9694.1+774
55 to 591,0904.61,5934.11,9584.0+868
60 to 641,0714.51,4603.81,7983.7+727
65 to 691,1394.81,3913.61,7293.6+590
70 to 747333.11,1593.01,5413.2+808
75 to 794982.19442.41,2572.6+759
80 to 842671.16621.78641.8+597
85 and over4001.76631.79472.0+547
Total persons23,552100.038,739100.048,373100.0+24,821
Source: Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), July 2021.

Key findings

In 2016, the dominant age structure for persons in City of Adelaide was ages 20 to 24, which accounted for 21.1% of the total persons.

The largest increase in persons between 2016 and 2031 is forecast to be in ages 20 to 24, which is expected to increase by 3,754 and account for 22.5% of the total persons.

The largest 5 year age group in 2031 is 20 to 24 years, with a total of 8,712 persons.

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