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Northern Beaches CouncilPopulation forecast


Population and age structure

Between 2016 and 2026, the age structure forecasts for Warriewood indicate a 1.1% decrease in population under working age, a 32.2% increase in population of retirement age, and a 3.3% 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 Warriewood 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
Warriewood - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 45957.65326.36346.5+39
5 to 96618.46097.27007.1+39
10 to 145166.66117.36816.9+166
15 to 194525.75756.86286.4+176
20 to 244325.54044.84854.9+53
25 to 293083.92993.63703.8+63
30 to 345106.54154.94784.9-32
35 to 396187.95346.46356.5+17
40 to 446908.85847.06586.7-33
45 to 495937.65706.86126.2+18
50 to 544806.15796.95705.8+90
55 to 594105.25466.55815.9+170
60 to 643394.34855.85926.0+253
65 to 693454.44215.05505.6+206
70 to 742853.63604.35015.1+216
75 to 792252.93293.94214.3+196
80 to 841682.12693.23503.6+182
85 and over2312.92793.33713.8+140
Total persons7,859100.08,403100.09,817100.0+1,958
Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, November 2017.

Key findings

In 2016, the dominant age structure for persons in Warriewood was ages 40 to 44, which accounted for 8.8% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 60 to 64, which is expected to increase by 146 and account for 5.8% of the total persons.

The largest 5 year age group in 2026 is 10 to 14 years, with a total of 611 persons.

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