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Blacktown City CouncilPopulation forecast

Marsden Park

Population and age structure

Between 2021 and 2031, the age structure forecasts for Marsden Park indicate a 48.5% increase in population under working age, a 113.8% increase in population of retirement age, and a 78.3% 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
Marsden Park - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41,77012.02,1038.32,9857.8+1,215
5 to 91,64911.22,3279.23,0788.0+1,430
10 to 141,0867.42,2609.02,8667.5+1,780
15 to 196624.51,7396.92,3166.0+1,654
20 to 245974.11,3545.42,0395.3+1,442
25 to 291,0297.01,3015.21,9935.2+964
30 to 341,76812.01,9327.72,7767.2+1,008
35 to 392,25515.32,5089.93,4328.9+1,177
40 to 441,3709.32,68310.63,3818.8+2,010
45 to 497114.82,3489.33,0467.9+2,336
50 to 543792.61,4675.82,6626.9+2,283
55 to 593532.48803.52,3136.0+1,960
60 to 643262.26412.51,9095.0+1,583
65 to 693142.15762.31,2113.2+897
70 to 742411.64321.78152.1+574
75 to 791200.82981.25671.5+447
80 to 84820.62010.84421.2+360
85 and over240.21630.65641.5+540
Total persons14,736100.025,214100.038,393100.0+23,658
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), April 2024.

Key findings

In 2021, the dominant age structure for persons in Marsden Park was ages 35 to 39, which accounted for 15.3% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 45 to 49, which is expected to increase by 1,638 and account for 9.3% of the total persons.

The largest 5 year age group in 2031 is 40 to 44 years, with a total of 2,683 persons.

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