City of OnkaparingaPopulation forecast
census-message-logo

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

Skip to content

City of Onkaparinga

Population and age structure

Between 2016 and 2026, the age structure forecasts for the City of Onkaparinga indicate a 13.7% increase in population under working age, a 25.1% increase in population of retirement age, and a 9.4% 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
City of Onkaparinga - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 4 10,8176.411,9966.313,2606.2+2,443
5 to 9 11,0656.512,2746.413,6036.4+2,538
10 to 14 10,2376.112,2576.413,5586.4+3,321
15 to 19 10,6626.311,8276.213,1296.2+2,467
20 to 24 10,7116.311,0685.812,5815.9+1,870
25 to 29 10,5156.211,9966.313,2406.2+2,725
30 to 34 11,2386.612,7996.713,9916.6+2,753
35 to 39 10,6336.312,9766.814,4666.8+3,833
40 to 44 11,0736.513,0626.814,5686.9+3,495
45 to 49 11,4236.812,1576.414,0006.6+2,577
50 to 54 11,1446.611,4666.013,1436.2+1,999
55 to 59 10,9516.511,0315.811,9955.6+1,044
60 to 64 10,2776.110,4915.511,2135.3+936
65 to 69 9,9715.99,8745.210,4204.9+449
70 to 74 7,0174.28,7684.69,3084.4+2,291
75 to 79 4,6452.77,6914.08,0153.8+3,370
80 to 84 3,2631.94,8932.66,1082.9+2,845
85 and over3,4312.04,2192.25,7762.7+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 - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 5,776 Forecast persons aged 80-84,  2036: 6,108 Forecast persons aged 75-79,  2036: 8,015 Forecast persons aged 70-74,  2036: 9,308 Forecast persons aged 65-69,  2036: 10,420 Forecast persons aged 60-64,  2036: 11,213 Forecast persons aged 55-59,  2036: 11,995 Forecast persons aged 50-54,  2036: 13,143 Forecast persons aged 45-49,  2036: 14,000 Forecast persons aged 40-44,  2036: 14,568 Forecast persons aged 35-39,  2036: 14,466 Forecast persons aged 30-34,  2036: 13,991 Forecast persons aged 25-29,  2036: 13,240 Forecast persons aged 20-24,  2036: 12,581 Forecast persons aged 15-19,  2036: 13,129 Forecast persons aged 10-14,  2036: 13,558 Forecast persons aged 5-9,  2036: 13,603 Forecast persons aged 0-4,  2036: 13,260 Forecast persons aged 85+,  2026: 4,219 Forecast persons aged 80-84,  2026: 4,893 Forecast persons aged 75-79,  2026: 7,691 Forecast persons aged 70-74,  2026: 8,768 Forecast persons aged 65-69,  2026: 9,874 Forecast persons aged 60-64,  2026: 10,491 Forecast persons aged 55-59,  2026: 11,031 Forecast persons aged 50-54,  2026: 11,466 Forecast persons aged 45-49,  2026: 12,157 Forecast persons aged 40-44,  2026: 13,062 Forecast persons aged 35-39,  2026: 12,976 Forecast persons aged 30-34,  2026: 12,799 Forecast persons aged 25-29,  2026: 11,996 Forecast persons aged 20-24,  2026: 11,068 Forecast persons aged 15-19,  2026: 11,827 Forecast persons aged 10-14,  2026: 12,257 Forecast persons aged 5-9,  2026: 12,274 Forecast persons aged 0-4,  2026: 11,996 Forecast persons aged 85+,  2016: 3,431 Forecast persons aged 80-84,  2016: 3,263 Forecast persons aged 75-79,  2016: 4,645 Forecast persons aged 70-74,  2016: 7,017 Forecast persons aged 65-69,  2016: 9,971 Forecast persons aged 60-64,  2016: 10,277 Forecast persons aged 55-59,  2016: 10,951 Forecast persons aged 50-54,  2016: 11,144 Forecast persons aged 45-49,  2016: 11,423 Forecast persons aged 40-44,  2016: 11,073 Forecast persons aged 35-39,  2016: 10,633 Forecast persons aged 30-34,  2016: 11,238 Forecast persons aged 25-29,  2016: 10,515 Forecast persons aged 20-24,  2016: 10,711 Forecast persons aged 15-19,  2016: 10,662 Forecast persons aged 10-14,  2016: 10,237 Forecast persons aged 5-9,  2016: 11,065 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 - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2026 to 2036: 1,558 Forecast persons aged 80-84,  2026 to 2036: 1,215 Forecast persons aged 75-79,  2026 to 2036: 325 Forecast persons aged 70-74,  2026 to 2036: 539 Forecast persons aged 65-69,  2026 to 2036: 546 Forecast persons aged 60-64,  2026 to 2036: 722 Forecast persons aged 55-59,  2026 to 2036: 964 Forecast persons aged 50-54,  2026 to 2036: 1,677 Forecast persons aged 45-49,  2026 to 2036: 1,843 Forecast persons aged 40-44,  2026 to 2036: 1,506 Forecast persons aged 35-39,  2026 to 2036: 1,489 Forecast persons aged 30-34,  2026 to 2036: 1,192 Forecast persons aged 25-29,  2026 to 2036: 1,243 Forecast persons aged 20-24,  2026 to 2036: 1,513 Forecast persons aged 15-19,  2026 to 2036: 1,302 Forecast persons aged 10-14,  2026 to 2036: 1,301 Forecast persons aged 5-9,  2026 to 2036: 1,330 Forecast persons aged 0-4,  2026 to 2036: 1,263 Forecast persons aged 85+,  2016 to 2026: 788 Forecast persons aged 80-84,  2016 to 2026: 1,630 Forecast persons aged 75-79,  2016 to 2026: 3,046 Forecast persons aged 70-74,  2016 to 2026: 1,751 Forecast persons aged 65-69,  2016 to 2026: -97 Forecast persons aged 60-64,  2016 to 2026: 214 Forecast persons aged 55-59,  2016 to 2026: 80 Forecast persons aged 50-54,  2016 to 2026: 322 Forecast persons aged 45-49,  2016 to 2026: 734 Forecast persons aged 40-44,  2016 to 2026: 1,989 Forecast persons aged 35-39,  2016 to 2026: 2,343 Forecast persons aged 30-34,  2016 to 2026: 1,561 Forecast persons aged 25-29,  2016 to 2026: 1,481 Forecast persons aged 20-24,  2016 to 2026: 357 Forecast persons aged 15-19,  2016 to 2026: 1,165 Forecast persons aged 10-14,  2016 to 2026: 2,020 Forecast persons aged 5-9,  2016 to 2026: 1,209 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 2016, the dominant age structure for persons in the City of Onkaparinga was ages 45 to 49 , which accounted for 6.8% 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 3,046 and account for 4.0% of the total persons.

The largest 5 year age group in 2026 is 40 to 44 years, with a total of 13,062 persons.

v17.12.12-1.0.0