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Blacktown City CouncilPopulation forecast

Acacia Gardens - Parklea

Population and age structure

Between 2021 and 2031, the age structure forecasts for Acacia Gardens - Parklea indicate a 33.1% decrease in males under working age, a 64.2% increase in males of retirement age, and a 11.0% increase in males 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
Acacia Gardens - Parklea - Total males202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 42165.01773.81593.1-57
5 to 92525.81693.71412.7-111
10 to 142565.91383.01062.1-150
15 to 192495.72295.01472.9-102
20 to 243648.43507.62585.0-107
25 to 294209.73738.13567.0-64
30 to 3445310.54429.64548.90
35 to 3945310.447510.35079.9+55
40 to 444259.847710.351710.1+92
45 to 493417.94579.95019.8+160
50 to 542535.83828.35029.8+249
55 to 592205.13277.14759.3+256
60 to 641914.42264.94118.0+220
65 to 69771.81533.32344.6+157
70 to 741012.3701.51242.4+23
75 to 79441.0571.2761.5+32
80 to 84210.5731.6741.5+53
85 and over00.0461.0761.5+76
Total persons4,336100.04,621100.05,117100.0+782
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), April 2024.

Key findings

In 2021, the dominant age structure for males in Acacia Gardens - Parklea was ages 30 to 34, which accounted for 10.5% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 50 to 54, which is expected to increase by 129 and account for 8.3% of the total males.

The largest male 5 year age group in 2031 is 40 to 44 years, with a total of 477 males.

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