City of OnkaparingaPopulation forecast
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Aldinga Beach

Population and age structure

Between 2016 and 2026, the age structure forecasts for Aldinga Beach indicate a 1.8% decrease in population under working age, a 32.3% increase in population of retirement age, and a 19.3% 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 Onkaparinga 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
Aldinga Beach - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 49629.08496.99056.8-57
5 to 99248.78607.09176.9-7
10 to 147677.28967.38696.5+102
15 to 196756.38546.98396.3+164
20 to 246275.98657.09307.0+303
25 to 296836.48697.09287.0+245
30 to 347907.48086.58726.5+82
35 to 397467.08156.68736.5+127
40 to 447016.68056.58236.2+122
45 to 496446.07616.28036.0+159
50 to 546726.37125.87775.8+105
55 to 595014.76765.57525.6+251
60 to 645335.06745.57095.3+176
65 to 694974.75234.26434.8+146
70 to 743573.35044.16084.6+251
75 to 792562.44243.44553.4+199
80 to 841601.52482.03382.5+178
85 and over1711.62081.72952.2+124
Total persons10,666100.012,350100.013,335100.0+2,669

Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, October 2017.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 295 Forecast persons aged 80-84,  2036: 338 Forecast persons aged 75-79,  2036: 455 Forecast persons aged 70-74,  2036: 608 Forecast persons aged 65-69,  2036: 643 Forecast persons aged 60-64,  2036: 709 Forecast persons aged 55-59,  2036: 752 Forecast persons aged 50-54,  2036: 777 Forecast persons aged 45-49,  2036: 803 Forecast persons aged 40-44,  2036: 823 Forecast persons aged 35-39,  2036: 873 Forecast persons aged 30-34,  2036: 872 Forecast persons aged 25-29,  2036: 928 Forecast persons aged 20-24,  2036: 930 Forecast persons aged 15-19,  2036: 839 Forecast persons aged 10-14,  2036: 869 Forecast persons aged 5-9,  2036: 917 Forecast persons aged 0-4,  2036: 905 Forecast persons aged 85+,  2026: 208 Forecast persons aged 80-84,  2026: 248 Forecast persons aged 75-79,  2026: 424 Forecast persons aged 70-74,  2026: 504 Forecast persons aged 65-69,  2026: 523 Forecast persons aged 60-64,  2026: 674 Forecast persons aged 55-59,  2026: 676 Forecast persons aged 50-54,  2026: 712 Forecast persons aged 45-49,  2026: 761 Forecast persons aged 40-44,  2026: 805 Forecast persons aged 35-39,  2026: 815 Forecast persons aged 30-34,  2026: 808 Forecast persons aged 25-29,  2026: 869 Forecast persons aged 20-24,  2026: 865 Forecast persons aged 15-19,  2026: 854 Forecast persons aged 10-14,  2026: 896 Forecast persons aged 5-9,  2026: 860 Forecast persons aged 0-4,  2026: 849 Forecast persons aged 85+,  2016: 171 Forecast persons aged 80-84,  2016: 160 Forecast persons aged 75-79,  2016: 256 Forecast persons aged 70-74,  2016: 357 Forecast persons aged 65-69,  2016: 497 Forecast persons aged 60-64,  2016: 533 Forecast persons aged 55-59,  2016: 501 Forecast persons aged 50-54,  2016: 672 Forecast persons aged 45-49,  2016: 644 Forecast persons aged 40-44,  2016: 701 Forecast persons aged 35-39,  2016: 746 Forecast persons aged 30-34,  2016: 790 Forecast persons aged 25-29,  2016: 683 Forecast persons aged 20-24,  2016: 627 Forecast persons aged 15-19,  2016: 675 Forecast persons aged 10-14,  2016: 767 Forecast persons aged 5-9,  2016: 924 Forecast persons aged 0-4,  2016: 962
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, October 2017.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2026 to 2036: 87 Forecast persons aged 80-84,  2026 to 2036: 91 Forecast persons aged 75-79,  2026 to 2036: 31 Forecast persons aged 70-74,  2026 to 2036: 104 Forecast persons aged 65-69,  2026 to 2036: 119 Forecast persons aged 60-64,  2026 to 2036: 35 Forecast persons aged 55-59,  2026 to 2036: 77 Forecast persons aged 50-54,  2026 to 2036: 65 Forecast persons aged 45-49,  2026 to 2036: 42 Forecast persons aged 40-44,  2026 to 2036: 18 Forecast persons aged 35-39,  2026 to 2036: 58 Forecast persons aged 30-34,  2026 to 2036: 64 Forecast persons aged 25-29,  2026 to 2036: 59 Forecast persons aged 20-24,  2026 to 2036: 65 Forecast persons aged 15-19,  2026 to 2036: -15 Forecast persons aged 10-14,  2026 to 2036: -27 Forecast persons aged 5-9,  2026 to 2036: 57 Forecast persons aged 0-4,  2026 to 2036: 56 Forecast persons aged 85+,  2016 to 2026: 37 Forecast persons aged 80-84,  2016 to 2026: 88 Forecast persons aged 75-79,  2016 to 2026: 168 Forecast persons aged 70-74,  2016 to 2026: 147 Forecast persons aged 65-69,  2016 to 2026: 26 Forecast persons aged 60-64,  2016 to 2026: 141 Forecast persons aged 55-59,  2016 to 2026: 175 Forecast persons aged 50-54,  2016 to 2026: 40 Forecast persons aged 45-49,  2016 to 2026: 117 Forecast persons aged 40-44,  2016 to 2026: 104 Forecast persons aged 35-39,  2016 to 2026: 69 Forecast persons aged 30-34,  2016 to 2026: 18 Forecast persons aged 25-29,  2016 to 2026: 186 Forecast persons aged 20-24,  2016 to 2026: 238 Forecast persons aged 15-19,  2016 to 2026: 179 Forecast persons aged 10-14,  2016 to 2026: 129 Forecast persons aged 5-9,  2016 to 2026: -64 Forecast persons aged 0-4,  2016 to 2026: -113
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, October 2017.

Key findings

In 2016, the dominant age structure for persons in Aldinga Beach was ages 0 to 4, which accounted for 9.0% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 20 to 24, which is expected to increase by 238 and account for 7.0% of the total persons.

The largest 5 year age group in 2026 is 10 to 14 years, with a total of 896 persons.

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