Northern Beaches CouncilPopulation forecast
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Northern Beaches Council area

Population and age structure

Between 2011 and 2021, the age structure forecasts for the Northern Beaches Council area indicate a 6.8% increase in population under working age, a 25.6% increase in population of retirement age, and a 4.6% 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 area 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 area - Total persons201120212036Change between 2011 and 2036
Age group (years)Number%Number%Number%Number
0 to 4 17,7947.117,4366.419,4116.3+1,617
5 to 9 16,3306.517,3426.419,1716.3+2,841
10 to 14 14,5405.817,1796.318,3276.0+3,787
15 to 19 13,7295.515,6435.717,1475.6+3,418
20 to 24 13,9685.514,5895.416,4795.4+2,511
25 to 29 15,4036.115,4995.717,4805.7+2,077
30 to 34 17,7167.017,4746.419,3856.3+1,669
35 to 39 20,6668.219,3507.121,0856.9+419
40 to 44 20,0748.019,9347.321,4037.0+1,329
45 to 49 18,7047.419,9277.320,5536.7+1,849
50 to 54 16,4466.518,3286.719,3186.3+2,872
55 to 59 14,4595.716,6736.117,9225.8+3,463
60 to 64 13,3485.314,6745.416,8215.5+3,473
65 to 69 11,3654.512,8924.715,4855.0+4,120
70 to 74 8,4883.411,6064.314,1204.6+5,632
75 to 79 6,6092.69,5593.512,3334.0+5,724
80 to 84 5,7332.36,7402.59,8593.2+4,126
85 and over6,3232.57,5772.810,3833.4+4,060
Total persons251,694100.0272,424100.0306,682100.0+54,987

Population and household forecasts, 2011 to 2036, prepared by .id , the population experts, October 2016.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 10,383 Forecast persons aged 80-84,  2036: 9,859 Forecast persons aged 75-79,  2036: 12,333 Forecast persons aged 70-74,  2036: 14,120 Forecast persons aged 65-69,  2036: 15,485 Forecast persons aged 60-64,  2036: 16,821 Forecast persons aged 55-59,  2036: 17,922 Forecast persons aged 50-54,  2036: 19,318 Forecast persons aged 45-49,  2036: 20,553 Forecast persons aged 40-44,  2036: 21,403 Forecast persons aged 35-39,  2036: 21,085 Forecast persons aged 30-34,  2036: 19,385 Forecast persons aged 25-29,  2036: 17,480 Forecast persons aged 20-24,  2036: 16,479 Forecast persons aged 15-19,  2036: 17,147 Forecast persons aged 10-14,  2036: 18,327 Forecast persons aged 5-9,  2036: 19,171 Forecast persons aged 0-4,  2036: 19,411 Forecast persons aged 85+,  2021: 7,577 Forecast persons aged 80-84,  2021: 6,740 Forecast persons aged 75-79,  2021: 9,559 Forecast persons aged 70-74,  2021: 11,606 Forecast persons aged 65-69,  2021: 12,892 Forecast persons aged 60-64,  2021: 14,674 Forecast persons aged 55-59,  2021: 16,673 Forecast persons aged 50-54,  2021: 18,328 Forecast persons aged 45-49,  2021: 19,927 Forecast persons aged 40-44,  2021: 19,934 Forecast persons aged 35-39,  2021: 19,350 Forecast persons aged 30-34,  2021: 17,474 Forecast persons aged 25-29,  2021: 15,499 Forecast persons aged 20-24,  2021: 14,589 Forecast persons aged 15-19,  2021: 15,643 Forecast persons aged 10-14,  2021: 17,179 Forecast persons aged 5-9,  2021: 17,342 Forecast persons aged 0-4,  2021: 17,436 Forecast persons aged 85+,  2011: 6,323 Forecast persons aged 80-84,  2011: 5,733 Forecast persons aged 75-79,  2011: 6,609 Forecast persons aged 70-74,  2011: 8,488 Forecast persons aged 65-69,  2011: 11,365 Forecast persons aged 60-64,  2011: 13,348 Forecast persons aged 55-59,  2011: 14,459 Forecast persons aged 50-54,  2011: 16,446 Forecast persons aged 45-49,  2011: 18,704 Forecast persons aged 40-44,  2011: 20,074 Forecast persons aged 35-39,  2011: 20,666 Forecast persons aged 30-34,  2011: 17,716 Forecast persons aged 25-29,  2011: 15,403 Forecast persons aged 20-24,  2011: 13,968 Forecast persons aged 15-19,  2011: 13,729 Forecast persons aged 10-14,  2011: 14,540 Forecast persons aged 5-9,  2011: 16,330 Forecast persons aged 0-4,  2011: 17,794
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, October 2016.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2021 to 2036: 2,805 Forecast persons aged 80-84,  2021 to 2036: 3,120 Forecast persons aged 75-79,  2021 to 2036: 2,774 Forecast persons aged 70-74,  2021 to 2036: 2,514 Forecast persons aged 65-69,  2021 to 2036: 2,593 Forecast persons aged 60-64,  2021 to 2036: 2,146 Forecast persons aged 55-59,  2021 to 2036: 1,249 Forecast persons aged 50-54,  2021 to 2036: 990 Forecast persons aged 45-49,  2021 to 2036: 626 Forecast persons aged 40-44,  2021 to 2036: 1,469 Forecast persons aged 35-39,  2021 to 2036: 1,735 Forecast persons aged 30-34,  2021 to 2036: 1,910 Forecast persons aged 25-29,  2021 to 2036: 1,981 Forecast persons aged 20-24,  2021 to 2036: 1,890 Forecast persons aged 15-19,  2021 to 2036: 1,504 Forecast persons aged 10-14,  2021 to 2036: 1,148 Forecast persons aged 5-9,  2021 to 2036: 1,829 Forecast persons aged 0-4,  2021 to 2036: 1,975 Forecast persons aged 85+,  2011 to 2021: 1,254 Forecast persons aged 80-84,  2011 to 2021: 1,007 Forecast persons aged 75-79,  2011 to 2021: 2,950 Forecast persons aged 70-74,  2011 to 2021: 3,118 Forecast persons aged 65-69,  2011 to 2021: 1,527 Forecast persons aged 60-64,  2011 to 2021: 1,326 Forecast persons aged 55-59,  2011 to 2021: 2,214 Forecast persons aged 50-54,  2011 to 2021: 1,882 Forecast persons aged 45-49,  2011 to 2021: 1,223 Forecast persons aged 40-44,  2011 to 2021: -140 Forecast persons aged 35-39,  2011 to 2021: -1,316 Forecast persons aged 30-34,  2011 to 2021: -241 Forecast persons aged 25-29,  2011 to 2021: 96 Forecast persons aged 20-24,  2011 to 2021: 621 Forecast persons aged 15-19,  2011 to 2021: 1,914 Forecast persons aged 10-14,  2011 to 2021: 2,639 Forecast persons aged 5-9,  2011 to 2021: 1,012 Forecast persons aged 0-4,  2011 to 2021: -358
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, October 2016.

Key findings

In 2011, the dominant age structure for persons in the Northern Beaches Council area was ages 35 to 39 , which accounted for 8.2% of the total persons.

The largest increase in persons between 2011 and 2021 is forecast to be in ages 70 to 74 , which is expected to increase by 3,118 and account for 4.3% of the total persons.

The largest 5 year age group in 2021 is 40 to 44 years, with a total of 19,934 persons.

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