City of OnkaparingaPopulation forecast
Skip to content

Happy Valley

Population and age structure

Between 2016 and 2026, the age structure forecasts for Happy Valley indicate a 0.4% decrease in population under working age, a 22.0% increase in population of retirement age, and a 0.6% 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
Happy Valley - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 46745.97075.97265.9+53
5 to 97726.77186.07245.9-48
10 to 147026.17156.07346.0+32
15 to 196445.67626.47466.1+102
20 to 246755.97065.97195.9+44
25 to 297116.26845.77326.0+21
30 to 347676.77516.37716.3+5
35 to 397556.68016.78076.6+52
40 to 447286.48377.08436.9+115
45 to 497036.17856.68046.6+101
50 to 547016.17045.97696.3+68
55 to 597656.76435.46935.7-72
60 to 647987.06195.26265.1-172
65 to 697716.76645.65954.9-176
70 to 743983.56785.75694.6+171
75 to 793172.86015.05474.5+230
80 to 843142.72842.44493.7+135
85 and over2592.32852.44023.3+143
Total persons11,453100.011,943100.012,256100.0+803

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: 402 Forecast persons aged 80-84,  2036: 449 Forecast persons aged 75-79,  2036: 547 Forecast persons aged 70-74,  2036: 569 Forecast persons aged 65-69,  2036: 595 Forecast persons aged 60-64,  2036: 626 Forecast persons aged 55-59,  2036: 693 Forecast persons aged 50-54,  2036: 769 Forecast persons aged 45-49,  2036: 804 Forecast persons aged 40-44,  2036: 843 Forecast persons aged 35-39,  2036: 807 Forecast persons aged 30-34,  2036: 771 Forecast persons aged 25-29,  2036: 732 Forecast persons aged 20-24,  2036: 719 Forecast persons aged 15-19,  2036: 746 Forecast persons aged 10-14,  2036: 734 Forecast persons aged 5-9,  2036: 724 Forecast persons aged 0-4,  2036: 726 Forecast persons aged 85+,  2026: 285 Forecast persons aged 80-84,  2026: 284 Forecast persons aged 75-79,  2026: 601 Forecast persons aged 70-74,  2026: 678 Forecast persons aged 65-69,  2026: 664 Forecast persons aged 60-64,  2026: 619 Forecast persons aged 55-59,  2026: 643 Forecast persons aged 50-54,  2026: 704 Forecast persons aged 45-49,  2026: 785 Forecast persons aged 40-44,  2026: 837 Forecast persons aged 35-39,  2026: 801 Forecast persons aged 30-34,  2026: 751 Forecast persons aged 25-29,  2026: 684 Forecast persons aged 20-24,  2026: 706 Forecast persons aged 15-19,  2026: 762 Forecast persons aged 10-14,  2026: 715 Forecast persons aged 5-9,  2026: 718 Forecast persons aged 0-4,  2026: 707 Forecast persons aged 85+,  2016: 259 Forecast persons aged 80-84,  2016: 314 Forecast persons aged 75-79,  2016: 317 Forecast persons aged 70-74,  2016: 398 Forecast persons aged 65-69,  2016: 771 Forecast persons aged 60-64,  2016: 798 Forecast persons aged 55-59,  2016: 765 Forecast persons aged 50-54,  2016: 701 Forecast persons aged 45-49,  2016: 703 Forecast persons aged 40-44,  2016: 728 Forecast persons aged 35-39,  2016: 755 Forecast persons aged 30-34,  2016: 767 Forecast persons aged 25-29,  2016: 711 Forecast persons aged 20-24,  2016: 675 Forecast persons aged 15-19,  2016: 644 Forecast persons aged 10-14,  2016: 702 Forecast persons aged 5-9,  2016: 772 Forecast persons aged 0-4,  2016: 674
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: 118 Forecast persons aged 80-84,  2026 to 2036: 164 Forecast persons aged 75-79,  2026 to 2036: -55 Forecast persons aged 70-74,  2026 to 2036: -109 Forecast persons aged 65-69,  2026 to 2036: -69 Forecast persons aged 60-64,  2026 to 2036: 8 Forecast persons aged 55-59,  2026 to 2036: 50 Forecast persons aged 50-54,  2026 to 2036: 64 Forecast persons aged 45-49,  2026 to 2036: 19 Forecast persons aged 40-44,  2026 to 2036: 6 Forecast persons aged 35-39,  2026 to 2036: 6 Forecast persons aged 30-34,  2026 to 2036: 21 Forecast persons aged 25-29,  2026 to 2036: 48 Forecast persons aged 20-24,  2026 to 2036: 13 Forecast persons aged 15-19,  2026 to 2036: -16 Forecast persons aged 10-14,  2026 to 2036: 19 Forecast persons aged 5-9,  2026 to 2036: 6 Forecast persons aged 0-4,  2026 to 2036: 19 Forecast persons aged 85+,  2016 to 2026: 26 Forecast persons aged 80-84,  2016 to 2026: -30 Forecast persons aged 75-79,  2016 to 2026: 284 Forecast persons aged 70-74,  2016 to 2026: 280 Forecast persons aged 65-69,  2016 to 2026: -107 Forecast persons aged 60-64,  2016 to 2026: -180 Forecast persons aged 55-59,  2016 to 2026: -122 Forecast persons aged 50-54,  2016 to 2026: 4 Forecast persons aged 45-49,  2016 to 2026: 82 Forecast persons aged 40-44,  2016 to 2026: 109 Forecast persons aged 35-39,  2016 to 2026: 47 Forecast persons aged 30-34,  2016 to 2026: -16 Forecast persons aged 25-29,  2016 to 2026: -27 Forecast persons aged 20-24,  2016 to 2026: 31 Forecast persons aged 15-19,  2016 to 2026: 118 Forecast persons aged 10-14,  2016 to 2026: 13 Forecast persons aged 5-9,  2016 to 2026: -55 Forecast persons aged 0-4,  2016 to 2026: 34
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 Happy Valley was ages 60 to 64, which accounted for 7.0% 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 284 and account for 5.0% of the total persons.

The largest 5 year age group in 2026 is 40 to 44 years, with a total of 837 persons.

v19.10.22-1.0.0