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Alexandrina CouncilPopulation forecast

Alexandrina Council

Population and age structure

Between 2016 and 2026, the age structure forecasts for Alexandrina Council indicate a 8.2% increase in population under working age, a 28.6% increase in population of retirement age, and a 6.7% 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 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
Alexandrina Council - Total persons201620262041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 41,2394.71,4124.71,6784.5+439
5 to 91,4815.61,5965.31,9075.2+426
10 to 141,5485.81,6105.41,9705.3+422
15 to 191,3495.11,4044.71,6774.5+327
20 to 241,1074.21,1093.71,2713.4+163
25 to 291,1044.21,1003.71,2723.4+168
30 to 341,0844.11,2064.01,4323.9+349
35 to 391,2044.51,3754.61,6644.5+460
40 to 441,5495.81,5185.11,8905.1+341
45 to 491,6226.11,6345.42,0465.5+424
50 to 541,7976.81,9116.42,2166.0+419
55 to 592,0217.62,1737.22,5707.0+550
60 to 642,0987.92,4998.33,0148.2+917
65 to 692,3989.02,6388.83,2838.9+885
70 to 741,9177.22,3587.93,0568.3+1,140
75 to 791,3825.22,1047.02,5987.0+1,217
80 to 848263.11,3394.51,9025.2+1,076
85 and over8123.19943.31,4594.0+647
Total persons26,535100.029,980100.036,907100.0+10,371
Source: Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), April 2018.

Key findings

In 2016, the dominant age structure for persons in Alexandrina Council was ages 65 to 69, which accounted for 9.0% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 75 to 79, which is expected to increase by 722 and account for 7.0% of the total persons.

The largest 5 year age group in 2026 is 65 to 69 years, with a total of 2,638 persons.

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