South West GroupPopulation forecast
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South West Group

Population and age structure

Between 2011 and 2021, the age structure forecasts for South West Group indicate a 42.4% increase in population under working age, a 44.6% increase in population of retirement age, and a 29.2% 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 South West Group 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
South West Group - Total persons201120212036Change between 2011 and 2036
Age group (years)Number%Number%Number%Number
0 to 4 25,3296.836,8397.444,4557.0+19,126
5 to 9 23,5486.334,9697.043,0796.8+19,531
10 to 14 23,9086.431,8716.440,4096.4+16,501
15 to 19 25,4036.830,9366.239,7346.3+14,331
20 to 24 27,9357.534,0836.842,0256.6+14,090
25 to 29 27,1417.336,2057.343,2136.8+16,072
30 to 34 25,4476.836,4457.343,8716.9+18,424
35 to 39 27,0247.236,4067.344,2477.0+17,223
40 to 44 27,9797.535,5277.143,5226.9+15,543
45 to 49 26,7347.233,9296.842,2526.7+15,518
50 to 54 24,8836.730,9716.239,1676.2+14,284
55 to 59 21,7675.827,8765.635,3835.6+13,616
60 to 64 19,1675.125,0405.031,9585.0+12,791
65 to 69 14,4183.921,0884.228,1824.4+13,764
70 to 74 10,9432.917,1923.424,2593.8+13,316
75 to 79 8,9632.412,4882.520,1783.2+11,215
80 to 84 6,9591.98,6221.714,7042.3+7,745
85 and over5,8291.68,7521.813,7192.2+7,890
Total persons373,377100.0499,240100.0634,356100.0+260,979

Population and household forecasts, 2011 to 2036, prepared by .id , the population experts, July 2017.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 13,719 Forecast persons aged 80-84,  2036: 14,704 Forecast persons aged 75-79,  2036: 20,178 Forecast persons aged 70-74,  2036: 24,259 Forecast persons aged 65-69,  2036: 28,182 Forecast persons aged 60-64,  2036: 31,958 Forecast persons aged 55-59,  2036: 35,383 Forecast persons aged 50-54,  2036: 39,167 Forecast persons aged 45-49,  2036: 42,252 Forecast persons aged 40-44,  2036: 43,522 Forecast persons aged 35-39,  2036: 44,247 Forecast persons aged 30-34,  2036: 43,871 Forecast persons aged 25-29,  2036: 43,213 Forecast persons aged 20-24,  2036: 42,025 Forecast persons aged 15-19,  2036: 39,734 Forecast persons aged 10-14,  2036: 40,409 Forecast persons aged 5-9,  2036: 43,079 Forecast persons aged 0-4,  2036: 44,455 Forecast persons aged 85+,  2021: 8,752 Forecast persons aged 80-84,  2021: 8,622 Forecast persons aged 75-79,  2021: 12,488 Forecast persons aged 70-74,  2021: 17,192 Forecast persons aged 65-69,  2021: 21,088 Forecast persons aged 60-64,  2021: 25,040 Forecast persons aged 55-59,  2021: 27,876 Forecast persons aged 50-54,  2021: 30,971 Forecast persons aged 45-49,  2021: 33,929 Forecast persons aged 40-44,  2021: 35,527 Forecast persons aged 35-39,  2021: 36,406 Forecast persons aged 30-34,  2021: 36,445 Forecast persons aged 25-29,  2021: 36,205 Forecast persons aged 20-24,  2021: 34,083 Forecast persons aged 15-19,  2021: 30,936 Forecast persons aged 10-14,  2021: 31,871 Forecast persons aged 5-9,  2021: 34,969 Forecast persons aged 0-4,  2021: 36,839 Forecast persons aged 85+,  2011: 5,829 Forecast persons aged 80-84,  2011: 6,959 Forecast persons aged 75-79,  2011: 8,963 Forecast persons aged 70-74,  2011: 10,943 Forecast persons aged 65-69,  2011: 14,418 Forecast persons aged 60-64,  2011: 19,167 Forecast persons aged 55-59,  2011: 21,767 Forecast persons aged 50-54,  2011: 24,883 Forecast persons aged 45-49,  2011: 26,734 Forecast persons aged 40-44,  2011: 27,979 Forecast persons aged 35-39,  2011: 27,024 Forecast persons aged 30-34,  2011: 25,447 Forecast persons aged 25-29,  2011: 27,141 Forecast persons aged 20-24,  2011: 27,935 Forecast persons aged 15-19,  2011: 25,403 Forecast persons aged 10-14,  2011: 23,908 Forecast persons aged 5-9,  2011: 23,548 Forecast persons aged 0-4,  2011: 25,329
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, July 2017.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2021 to 2036: 4,967 Forecast persons aged 80-84,  2021 to 2036: 6,082 Forecast persons aged 75-79,  2021 to 2036: 7,690 Forecast persons aged 70-74,  2021 to 2036: 7,067 Forecast persons aged 65-69,  2021 to 2036: 7,093 Forecast persons aged 60-64,  2021 to 2036: 6,918 Forecast persons aged 55-59,  2021 to 2036: 7,507 Forecast persons aged 50-54,  2021 to 2036: 8,196 Forecast persons aged 45-49,  2021 to 2036: 8,323 Forecast persons aged 40-44,  2021 to 2036: 7,995 Forecast persons aged 35-39,  2021 to 2036: 7,841 Forecast persons aged 30-34,  2021 to 2036: 7,426 Forecast persons aged 25-29,  2021 to 2036: 7,008 Forecast persons aged 20-24,  2021 to 2036: 7,942 Forecast persons aged 15-19,  2021 to 2036: 8,798 Forecast persons aged 10-14,  2021 to 2036: 8,538 Forecast persons aged 5-9,  2021 to 2036: 8,110 Forecast persons aged 0-4,  2021 to 2036: 7,615 Forecast persons aged 85+,  2011 to 2021: 2,923 Forecast persons aged 80-84,  2011 to 2021: 1,663 Forecast persons aged 75-79,  2011 to 2021: 3,525 Forecast persons aged 70-74,  2011 to 2021: 6,249 Forecast persons aged 65-69,  2011 to 2021: 6,670 Forecast persons aged 60-64,  2011 to 2021: 5,873 Forecast persons aged 55-59,  2011 to 2021: 6,109 Forecast persons aged 50-54,  2011 to 2021: 6,088 Forecast persons aged 45-49,  2011 to 2021: 7,195 Forecast persons aged 40-44,  2011 to 2021: 7,548 Forecast persons aged 35-39,  2011 to 2021: 9,382 Forecast persons aged 30-34,  2011 to 2021: 10,998 Forecast persons aged 25-29,  2011 to 2021: 9,064 Forecast persons aged 20-24,  2011 to 2021: 6,148 Forecast persons aged 15-19,  2011 to 2021: 5,533 Forecast persons aged 10-14,  2011 to 2021: 7,963 Forecast persons aged 5-9,  2011 to 2021: 11,421 Forecast persons aged 0-4,  2011 to 2021: 11,510
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, July 2017.

Key findings

In 2011, the dominant age structure for persons in South West Group was ages 40 to 44 , which accounted for 7.5% of the total persons.

The largest increase in persons between 2011 and 2021 is forecast to be in ages 0 to 4 , which is expected to increase by 11,510 and account for 7.4% of the total persons.

The largest 5 year age group in 2021 is 0 to 4 years, with a total of 36,839 persons.

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