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Alexandrina CouncilPopulation forecast

Alexandrina Council

Population and age structure

Between [Parameter].[Year1Label] and 2022, the age structure forecasts for Alexandrina Council indicate a 0.9% increase in population under working age, a 2.4% increase in population of retirement age, and a 1.1% 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 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 persons[Parameter].[Year1Label]20222026Change between [Parameter].[Year1Label] and 2026
Age group (years)Number%Number%Number%Number
0 to 41,1854.01,2304.11,3754.4+190
5 to 91,4234.91,4264.81,4874.7+64
10 to 141,6505.61,6405.51,6195.1-31
15 to 191,4675.01,4915.01,5434.9+75
20 to 241,0743.71,1103.71,2093.8+135
25 to 291,0743.71,0763.61,1323.6+57
30 to 341,2654.31,2604.21,2584.0-7
35 to 391,3034.41,3254.51,4594.6+156
40 to 441,3894.71,4384.81,5374.9+148
45 to 491,7065.81,6425.51,6455.2-61
50 to 541,8326.21,9046.41,9366.1+104
55 to 592,0507.02,0606.92,1656.9+114
60 to 642,4978.52,5288.52,5508.1+53
65 to 692,6609.12,6889.02,9529.4+292
70 to 742,7139.32,7319.22,8429.0+128
75 to 791,9046.52,0797.02,4757.9+571
80 to 841,2114.11,2344.11,4624.6+251
85 and over9163.18933.08802.8-37
Total persons29,321100.029,755100.031,523100.0+2,203
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), February 2023.

Key findings

In [Parameter].[Year1Label], the dominant age structure for persons in Alexandrina Council was ages 70 to 74, which accounted for 9.3% of the total persons.

The largest increase in persons between [Parameter].[Year1Label] and 2022 is forecast to be in ages 75 to 79, which is expected to increase by 175 and account for 7.0% of the total persons.

The largest 5 year age group in 2022 is 70 to 74 years, with a total of 2,731 persons.

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