Northern Beaches CouncilPopulation forecast
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Collaroy

Population and age structure

Between 2016 and 2026, the age structure forecasts for Collaroy indicate a 1.4% increase in population under working age, a 18.6% increase in population of retirement age, and a 3.7% 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
Collaroy - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 44665.74575.34875.3+21
5 to 94475.54615.34885.3+41
10 to 144485.54625.34805.2+31
15 to 194825.94915.75175.6+36
20 to 244986.16197.16567.1+158
25 to 295686.96727.77137.7+146
30 to 346948.56457.47087.7+14
35 to 395696.95676.56216.7+52
40 to 445516.75806.75926.4+41
45 to 495446.65666.55886.4+43
50 to 545696.95486.35806.3+11
55 to 595446.64905.65155.6-29
60 to 644465.44915.74905.3+44
65 to 694335.34565.34354.7+2
70 to 743113.83794.44264.6+115
75 to 792112.63373.93764.1+165
80 to 841772.22022.32582.8+81
85 and over2392.92522.93053.3+66
Total persons8,196100.08,675100.09,234100.0+1,038

Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, November 2017.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 305 Forecast persons aged 80-84,  2036: 258 Forecast persons aged 75-79,  2036: 376 Forecast persons aged 70-74,  2036: 426 Forecast persons aged 65-69,  2036: 435 Forecast persons aged 60-64,  2036: 490 Forecast persons aged 55-59,  2036: 515 Forecast persons aged 50-54,  2036: 580 Forecast persons aged 45-49,  2036: 588 Forecast persons aged 40-44,  2036: 592 Forecast persons aged 35-39,  2036: 621 Forecast persons aged 30-34,  2036: 708 Forecast persons aged 25-29,  2036: 713 Forecast persons aged 20-24,  2036: 656 Forecast persons aged 15-19,  2036: 517 Forecast persons aged 10-14,  2036: 480 Forecast persons aged 5-9,  2036: 488 Forecast persons aged 0-4,  2036: 487 Forecast persons aged 85+,  2026: 252 Forecast persons aged 80-84,  2026: 202 Forecast persons aged 75-79,  2026: 337 Forecast persons aged 70-74,  2026: 379 Forecast persons aged 65-69,  2026: 456 Forecast persons aged 60-64,  2026: 491 Forecast persons aged 55-59,  2026: 490 Forecast persons aged 50-54,  2026: 548 Forecast persons aged 45-49,  2026: 566 Forecast persons aged 40-44,  2026: 580 Forecast persons aged 35-39,  2026: 567 Forecast persons aged 30-34,  2026: 645 Forecast persons aged 25-29,  2026: 672 Forecast persons aged 20-24,  2026: 619 Forecast persons aged 15-19,  2026: 491 Forecast persons aged 10-14,  2026: 462 Forecast persons aged 5-9,  2026: 461 Forecast persons aged 0-4,  2026: 457 Forecast persons aged 85+,  2016: 239 Forecast persons aged 80-84,  2016: 177 Forecast persons aged 75-79,  2016: 211 Forecast persons aged 70-74,  2016: 311 Forecast persons aged 65-69,  2016: 433 Forecast persons aged 60-64,  2016: 446 Forecast persons aged 55-59,  2016: 544 Forecast persons aged 50-54,  2016: 569 Forecast persons aged 45-49,  2016: 544 Forecast persons aged 40-44,  2016: 551 Forecast persons aged 35-39,  2016: 569 Forecast persons aged 30-34,  2016: 694 Forecast persons aged 25-29,  2016: 568 Forecast persons aged 20-24,  2016: 498 Forecast persons aged 15-19,  2016: 482 Forecast persons aged 10-14,  2016: 448 Forecast persons aged 5-9,  2016: 447 Forecast persons aged 0-4,  2016: 466
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, November 2017.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2026 to 2036: 53 Forecast persons aged 80-84,  2026 to 2036: 56 Forecast persons aged 75-79,  2026 to 2036: 39 Forecast persons aged 70-74,  2026 to 2036: 47 Forecast persons aged 65-69,  2026 to 2036: -21 Forecast persons aged 60-64,  2026 to 2036: -1 Forecast persons aged 55-59,  2026 to 2036: 25 Forecast persons aged 50-54,  2026 to 2036: 31 Forecast persons aged 45-49,  2026 to 2036: 21 Forecast persons aged 40-44,  2026 to 2036: 12 Forecast persons aged 35-39,  2026 to 2036: 54 Forecast persons aged 30-34,  2026 to 2036: 63 Forecast persons aged 25-29,  2026 to 2036: 41 Forecast persons aged 20-24,  2026 to 2036: 37 Forecast persons aged 15-19,  2026 to 2036: 27 Forecast persons aged 10-14,  2026 to 2036: 17 Forecast persons aged 5-9,  2026 to 2036: 27 Forecast persons aged 0-4,  2026 to 2036: 30 Forecast persons aged 85+,  2016 to 2026: 13 Forecast persons aged 80-84,  2016 to 2026: 25 Forecast persons aged 75-79,  2016 to 2026: 127 Forecast persons aged 70-74,  2016 to 2026: 68 Forecast persons aged 65-69,  2016 to 2026: 23 Forecast persons aged 60-64,  2016 to 2026: 45 Forecast persons aged 55-59,  2016 to 2026: -54 Forecast persons aged 50-54,  2016 to 2026: -20 Forecast persons aged 45-49,  2016 to 2026: 22 Forecast persons aged 40-44,  2016 to 2026: 29 Forecast persons aged 35-39,  2016 to 2026: -2 Forecast persons aged 30-34,  2016 to 2026: -49 Forecast persons aged 25-29,  2016 to 2026: 104 Forecast persons aged 20-24,  2016 to 2026: 121 Forecast persons aged 15-19,  2016 to 2026: 9 Forecast persons aged 10-14,  2016 to 2026: 14 Forecast persons aged 5-9,  2016 to 2026: 14 Forecast persons aged 0-4,  2016 to 2026: -9
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 Collaroy was ages 30 to 34, which accounted for 8.5% 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 127 and account for 3.9% of the total persons.

The largest 5 year age group in 2026 is 25 to 29 years, with a total of 672 persons.

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