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Blacktown City CouncilPopulation forecast

Blacktown City Council

Population and age structure

Between 2016 and 2031, the age structure forecasts for Blacktown City Council indicate a 62.2% increase in population under working age, a 67.0% increase in population of retirement age, and a 51.5% 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 Blacktown 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
Blacktown City Council - Total persons201620312041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 428,6778.246,6028.652,6398.2+23,962
5 to 927,4817.944,1528.252,1138.1+24,632
10 to 1423,5756.838,5407.147,6377.4+24,062
15 to 1924,0586.935,0176.543,6726.8+19,614
20 to 2424,6117.134,9386.540,1306.2+15,519
25 to 2926,2267.540,4107.543,6976.8+17,471
30 to 3429,4008.446,7558.650,8447.9+21,444
35 to 3927,6928.045,7708.552,1258.1+24,433
40 to 4424,7337.140,5877.549,0177.6+24,284
45 to 4922,0456.334,3816.443,1646.7+21,119
50 to 5420,5235.929,2615.436,9695.7+16,446
55 to 5918,4565.325,0644.631,4284.9+12,972
60 to 6415,6124.521,2633.926,4044.1+10,792
65 to 6913,0833.818,1563.422,0463.4+8,963
70 to 748,6712.514,7582.718,1332.8+9,462
75 to 795,8641.711,3362.114,6282.3+8,764
80 to 843,8671.18,0501.510,8971.7+7,030
85 and over3,4091.05,9781.18,4241.3+5,015
Total persons347,983100.0541,017100.0643,968100.0+295,985
Source: Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), August 2021.

Key findings

In 2016, the dominant age structure for persons in Blacktown City Council was ages 30 to 34, which accounted for 8.4% 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 18,078 and account for 8.5% of the total persons.

The largest 5 year age group in 2031 is 30 to 34 years, with a total of 46,755 persons.

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