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Northern Beaches CouncilPopulation forecast

Northern Beaches Council

Population and age structure

Between 2016 and 2026, the age structure forecasts for the Northern Beaches Council indicate a 1.1% increase in population under working age, a 23.12% increase in population of retirement age, and a 5.3% 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 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
Northern Beaches Council - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 417,1146.418,0616.319,6016.3+2,487
5 to 918,7267.017,8686.219,2946.2+568
10 to 1416,5666.217,0426.018,4246.0+1,858
15 to 1914,9635.616,7955.917,2275.6+2,264
20 to 2414,0615.315,7665.516,5685.4+2,507
25 to 2915,5715.816,4245.717,7735.7+2,202
30 to 3417,6856.618,1516.319,6566.4+1,971
35 to 3918,8617.119,7796.921,3016.9+2,440
40 to 4421,1347.920,1907.121,5207.0+386
45 to 4920,0527.519,3556.820,6526.7+600
50 to 5418,4856.919,2536.719,4076.3+922
55 to 5916,0116.017,6146.217,8365.8+1,825
60 to 6413,6355.116,1175.617,0565.5+3,421
65 to 6912,7474.814,1154.915,7635.1+3,016
70 to 7410,5604.012,0604.214,4564.7+3,896
75 to 797,7702.910,7753.812,5124.0+4,742
80 to 845,4802.18,2142.99,8723.2+4,392
85 and over6,9232.68,3692.910,4163.4+3,492
Total persons266,344100.0285,949100.0309,333100.0+42,989
Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, October 2017.

Key findings

In 2016, the dominant age structure for persons in the Northern Beaches Council was ages 40 to 44, which accounted for 7.9% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 75 to 79, which is expected to increase by 3,005 and account for 3.8% of the total persons.

The largest 5 year age group in 2026 is 40 to 44 years, with a total of 20,190 persons.

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