City of OnkaparingaPopulation forecast
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This forecast has been updated with 2016 Census dwelling counts and the 2016 Estimated Resident Population. More information can be found here.

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City of Onkaparinga

Population and age structure

Between 2016 and 2026, the age structure category with the greatest increase in persons in the City of Onkaparinga is 'Seniors (70 to 84)'.

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 - Service age groups
City of Onkaparinga - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
Babies and pre-schoolers (0 to 4)10,8176.411,9966.313,2606.2+2,443
Primary schoolers (5 to 11)15,1719.017,1979.019,0479.0+3,876
Secondary schoolers (12 to 17)12,5937.414,5337.616,0747.6+3,481
Tertiary education and independence (18 to 24)14,9118.815,6958.217,7508.4+2,839
Young workforce (25 to 34)21,75312.924,79613.027,23012.8+5,477
Parents and homebuilders (35 to 49)33,12919.638,19520.043,03420.3+9,905
Older workers and pre-retirees (50 to 59)22,09513.122,49711.825,13711.8+3,042
Empty nesters and retirees (60 to 69)20,24812.020,36510.721,63310.2+1,385
Seniors (70 to 84)14,9258.821,35211.223,43111.0+8,506
Elderly aged (85 and over)3,4312.04,2192.25,7762.7+2,345
Total persons169,073100.0190,844100.0212,372100.0+43,299

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

Forecast age structure - Service age groups
Forecast age structure - Service age groups Forecast persons aged 85+,  2036: 5,776 Forecast persons aged 70-84,  2036: 23,431 Forecast persons aged 60-69,  2036: 21,633 Forecast persons aged 50-59,  2036: 25,137 Forecast persons aged 35-49,  2036: 43,034 Forecast persons aged 25-34,  2036: 27,230 Forecast persons aged 18-24,  2036: 17,750 Forecast persons aged 12-17,  2036: 16,074 Forecast persons aged 5-11,  2036: 19,047 Forecast persons aged 0-4,  2036: 13,260 Forecast persons aged 85+,  2026: 4,219 Forecast persons aged 70-84,  2026: 21,352 Forecast persons aged 60-69,  2026: 20,365 Forecast persons aged 50-59,  2026: 22,497 Forecast persons aged 35-49,  2026: 38,195 Forecast persons aged 25-34,  2026: 24,796 Forecast persons aged 18-24,  2026: 15,695 Forecast persons aged 12-17,  2026: 14,533 Forecast persons aged 5-11,  2026: 17,197 Forecast persons aged 0-4,  2026: 11,996 Forecast persons aged 85+,  2016: 3,431 Forecast persons aged 70-84,  2016: 14,925 Forecast persons aged 60-69,  2016: 20,248 Forecast persons aged 50-59,  2016: 22,095 Forecast persons aged 35-49,  2016: 33,129 Forecast persons aged 25-34,  2016: 21,753 Forecast persons aged 18-24,  2016: 14,911 Forecast persons aged 12-17,  2016: 12,593 Forecast persons aged 5-11,  2016: 15,171 Forecast persons aged 0-4,  2016: 10,817
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, October 2017.
Forecast change in age structure - Service age groups
Forecast change in age structure - Service age groups Forecast persons aged 85+,  2026 to 2036: 1,558 Forecast persons aged 70-84,  2026 to 2036: 2,079 Forecast persons aged 60-69,  2026 to 2036: 1,268 Forecast persons aged 50-59,  2026 to 2036: 2,640 Forecast persons aged 35-49,  2026 to 2036: 4,838 Forecast persons aged 25-34,  2026 to 2036: 2,435 Forecast persons aged 18-24,  2026 to 2036: 2,055 Forecast persons aged 12-17,  2026 to 2036: 1,541 Forecast persons aged 5-11,  2026 to 2036: 1,851 Forecast persons aged 0-4,  2026 to 2036: 1,263 Forecast persons aged 85+,  2016 to 2026: 788 Forecast persons aged 70-84,  2016 to 2026: 6,427 Forecast persons aged 60-69,  2016 to 2026: 117 Forecast persons aged 50-59,  2016 to 2026: 402 Forecast persons aged 35-49,  2016 to 2026: 5,066 Forecast persons aged 25-34,  2016 to 2026: 3,043 Forecast persons aged 18-24,  2016 to 2026: 784 Forecast persons aged 12-17,  2016 to 2026: 1,940 Forecast persons aged 5-11,  2016 to 2026: 2,026 Forecast persons aged 0-4,  2016 to 2026: 1,179
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, October 2017.

Key findings

In the City of Onkaparinga between 2016 and 2026, the number of persons aged under 17 is forecast to increase by 5,145 (13.3%), and will comprise 22.9% of the total population.

The number of persons aged over 60 is expected to increase by 7,332 (19.0%) and comprise 24.1% of the total population.

The largest service age group in 2026 is 'Parents and homebuilders (35 to 49)', with a total of 38,195 persons.

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