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The Hills Shire CouncilPopulation forecast

West Pennant Hills

Population and age structure

Between 2021 and 2030, the age structure forecasts for West Pennant Hills indicate a 24.3% increase in population under working age, a 44.3% increase in population of retirement age, and a 11.1% 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 The Hills 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
West Pennant Hills - Total persons202120302036Change between 2021 and 2036
Age group (years)Number%Number%Number%Number
0 to 45674.58585.69665.7+399
5 to 97896.21,0046.61,1226.6+333
10 to 148726.99076.01,0696.3+197
15 to 198376.69606.39915.9+154
20 to 248346.69526.21,0226.1+188
25 to 295294.27254.88174.8+288
30 to 345404.37314.88254.9+285
35 to 397566.09055.91,0126.0+256
40 to 447866.28655.79865.8+200
45 to 498136.49326.11,0015.9+188
50 to 548396.69186.09935.9+154
55 to 591,0017.99146.01,0146.0+13
60 to 649977.99096.09785.8-19
65 to 691,0077.91,0556.91,0096.0+2
70 to 747335.89756.41,0256.1+292
75 to 794263.47665.08344.9+408
80 to 842051.64763.16433.8+438
85 and over1671.33902.65773.4+410
Total persons12,698100.015,242100.016,884100.0+4,186
Source: Population and household forecasts, 2021 to 2036, prepared by .id (informed decisions), January 2023.

Key findings

In 2021, the dominant age structure for persons in West Pennant Hills was ages 65 to 69, which accounted for 7.9% of the total persons.

The largest increase in persons between 2021 and 2030 is forecast to be in ages 75 to 79, which is expected to increase by 340 and account for 5.0% of the total persons.

The largest 5 year age group in 2030 is 65 to 69 years, with a total of 1,055 persons.

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