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Wollongong City CouncilPopulation forecast

Wollongong City Council

Population and age structure

Between 2021 and 2031, the age structure forecasts for Wollongong City Council indicate a 15.8% increase in population under working age, a 21.0% increase in population of retirement age, and a 10.4% 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 Wollongong City Council 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
Wollongong City Council - Total persons202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 412,3525.814,5196.015,5585.8+3,206
5 to 912,8446.015,0426.216,4636.1+3,620
10 to 1413,1416.114,8426.116,7146.2+3,573
15 to 1913,2016.215,7296.517,5716.5+4,370
20 to 2416,0397.516,6306.817,9696.6+1,930
25 to 2914,7246.915,0066.216,3466.0+1,622
30 to 3414,1976.615,7586.516,7116.2+2,513
35 to 3913,6766.416,0656.617,1476.3+3,471
40 to 4413,0916.115,6516.417,1846.4+4,093
45 to 4913,7416.415,0926.217,0516.3+3,311
50 to 5412,9156.014,2385.916,3896.1+3,474
55 to 5913,2446.214,2845.915,8295.9+2,584
60 to 6412,5775.913,2185.414,7955.5+2,218
65 to 6910,6695.012,7255.214,0655.2+3,396
70 to 749,6764.511,7964.912,9254.8+3,249
75 to 797,3763.49,6644.011,6974.3+4,320
80 to 845,5342.67,1182.98,9673.3+3,433
85 and over5,6282.65,7272.47,1372.6+1,509
Total persons214,624100.0243,104100.0270,518100.0+55,894
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), January 2023.

Key findings

In 2021, the dominant age structure for persons in Wollongong City Council was ages 20 to 24, which accounted for 7.5% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 2,560 and account for 6.4% of the total persons.

The largest 5 year age group in 2031 is 20 to 24 years, with a total of 16,630 persons.

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