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Northern Beaches CouncilPopulation forecast

Frenchs Forest

Population and age structure

Between 2021 and 2031, the age structure forecasts for Frenchs Forest indicate a 124.2% increase in males under working age, a 27.3% increase in males of retirement age, and a 92.0% 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 the Northern Beaches 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
Frenchs Forest - Total males202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 44456.31,2068.91,2277.8+781
5 to 95507.71,2599.31,3428.5+792
10 to 146419.01,2038.91,3868.8+745
15 to 195728.01,0157.51,2748.1+702
20 to 244145.87885.89956.3+582
25 to 292643.76504.87154.5+451
30 to 342693.87395.57384.7+469
35 to 394055.79997.49786.2+573
40 to 445067.11,1248.31,1627.4+656
45 to 496358.91,0988.11,3018.3+666
50 to 545467.78716.51,1957.6+650
55 to 594566.46915.19576.1+501
60 to 643494.95033.77054.5+356
65 to 692633.73792.85353.4+272
70 to 742583.62892.14052.6+147
75 to 792313.32391.83342.1+102
80 to 841862.62141.62531.6+67
85 and over1211.72271.72661.7+145
Total persons7,111100.013,494100.015,769100.0+8,658
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), August 2023.

Key findings

In 2021, the dominant age structure for males in Frenchs Forest was ages 10 to 14, which accounted for 9.0% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 0 to 4, which is expected to increase by 761 and account for 8.9% of the total males.

The largest male 5 year age group in 2031 is 5 to 9 years, with a total of 1,259 males.

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