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Wollondilly Shire CouncilPopulation forecast

Wollondilly Shire Council

Population and age structure

Between 2016 and 2031, the age structure forecasts for Wollondilly Shire Council indicate a 44.5% increase in population under working age, a 73.0% increase in population of retirement age, and a 49.6% 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 Wollondilly Shire 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
Wollondilly Shire Council - Total persons201620312041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 43,5357.15,2797.06,9797.0+3,444
5 to 93,9217.95,6957.57,6557.7+3,735
10 to 143,7077.45,1586.87,0477.1+3,340
15 to 193,5077.04,6996.26,1086.1+2,601
20 to 243,1026.24,3235.75,2845.3+2,182
25 to 293,0126.04,6566.25,7225.7+2,710
30 to 343,1026.25,4557.26,9186.9+3,816
35 to 393,1066.25,9527.97,8547.9+4,748
40 to 443,6447.35,8717.87,9418.0+4,297
45 to 493,5187.15,1936.97,3027.3+3,784
50 to 543,2926.64,4185.96,4066.4+3,114
55 to 593,2276.54,1225.55,5075.5+2,280
60 to 642,7855.63,6384.84,6194.6+1,834
65 to 692,3694.83,1684.24,0234.0+1,654
70 to 741,6053.22,7463.63,4403.5+1,835
75 to 791,0912.22,1592.92,8212.8+1,730
80 to 846741.41,5102.02,0982.1+1,425
85 and over6161.21,4131.91,8761.9+1,260
Total persons49,811100.075,454100.099,600100.0+49,788
Source: Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), August 2019.

Key findings

In 2016, the dominant age structure for persons in Wollondilly Shire Council was ages 5 to 9, which accounted for 7.9% of the total persons.

The largest increase in persons between 2016 and 2031 is forecast to be in ages 35 to 39, which is expected to increase by 2,846 and account for 7.9% of the total persons.

The largest 5 year age group in 2031 is 35 to 39 years, with a total of 5,952 persons.

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