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Alexandrina CouncilPopulation forecast

Alexandrina Council

Population and age structure

Between 2021 and 2026, the age structure forecasts for Alexandrina Council indicate a 4.4% increase in females under working age, a 13.9% increase in females of retirement age, and a 4.3% 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 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 females202120262041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 45453.76564.17974.0+252
5 to 96894.76954.49304.7+242
10 to 148255.67985.01,0125.1+187
15 to 197024.87604.88854.5+183
20 to 245273.65893.76803.4+153
25 to 295673.85893.77273.7+161
30 to 346244.26434.18114.1+187
35 to 396744.67244.69044.6+230
40 to 447134.87784.99935.0+280
45 to 498435.77935.01,0385.3+194
50 to 548926.09385.91,1125.6+220
55 to 591,0757.31,0846.81,2956.6+220
60 to 641,2898.71,3488.51,5427.8+253
65 to 691,4019.51,5509.81,8019.1+400
70 to 741,3629.21,4679.31,7528.9+390
75 to 799206.21,2137.61,5027.6+583
80 to 846014.17124.51,1275.7+526
85 and over5113.55193.37994.1+288
Total persons14,758100.015,855100.019,706100.0+4,948
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 Alexandrina Council was ages 65 to 69, which accounted for 9.5% of the total females.

The largest increase in females between 2021 and 2026 is forecast to be in ages 75 to 79, which is expected to increase by 293 and account for 7.6% of the total females.

The largest female 5 year age group in 2026 is 65 to 69 years, with a total of 1,550 females.

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