Northern Beaches CouncilPopulation forecast
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Collaroy Plateau

Population and age structure

Between 2016 and 2026, the age structure forecasts for Collaroy Plateau indicate a 3.8% decrease in population under working age, a 17.8% increase in population of retirement age, and a 0.9% decrease 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 Plateau - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 43326.73947.94037.8+71
5 to 94298.63817.64087.9-21
10 to 144118.33527.03877.5-24
15 to 193907.83597.23506.7-40
20 to 242996.02885.72695.2-29
25 to 292234.52294.62284.4+5
30 to 341963.92695.42805.4+84
35 to 393016.13687.33897.5+88
40 to 444499.03617.24027.8-48
45 to 494198.43146.33516.8-67
50 to 543577.23316.62895.6-69
55 to 592625.33106.22554.9-7
60 to 642394.82775.52675.1+28
65 to 691933.92174.32534.9+61
70 to 741853.71833.62134.1+27
75 to 791082.21432.81673.2+58
80 to 84691.41392.81482.9+80
85 and over1072.2982.01212.3+13
Total persons4,971100.05,014100.05,181100.0+210

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: 121 Forecast persons aged 80-84,  2036: 148 Forecast persons aged 75-79,  2036: 167 Forecast persons aged 70-74,  2036: 213 Forecast persons aged 65-69,  2036: 253 Forecast persons aged 60-64,  2036: 267 Forecast persons aged 55-59,  2036: 255 Forecast persons aged 50-54,  2036: 289 Forecast persons aged 45-49,  2036: 351 Forecast persons aged 40-44,  2036: 402 Forecast persons aged 35-39,  2036: 389 Forecast persons aged 30-34,  2036: 280 Forecast persons aged 25-29,  2036: 228 Forecast persons aged 20-24,  2036: 269 Forecast persons aged 15-19,  2036: 350 Forecast persons aged 10-14,  2036: 387 Forecast persons aged 5-9,  2036: 408 Forecast persons aged 0-4,  2036: 403 Forecast persons aged 85+,  2026: 98 Forecast persons aged 80-84,  2026: 139 Forecast persons aged 75-79,  2026: 143 Forecast persons aged 70-74,  2026: 183 Forecast persons aged 65-69,  2026: 217 Forecast persons aged 60-64,  2026: 277 Forecast persons aged 55-59,  2026: 310 Forecast persons aged 50-54,  2026: 331 Forecast persons aged 45-49,  2026: 314 Forecast persons aged 40-44,  2026: 361 Forecast persons aged 35-39,  2026: 368 Forecast persons aged 30-34,  2026: 269 Forecast persons aged 25-29,  2026: 229 Forecast persons aged 20-24,  2026: 288 Forecast persons aged 15-19,  2026: 359 Forecast persons aged 10-14,  2026: 352 Forecast persons aged 5-9,  2026: 381 Forecast persons aged 0-4,  2026: 394 Forecast persons aged 85+,  2016: 107 Forecast persons aged 80-84,  2016: 69 Forecast persons aged 75-79,  2016: 108 Forecast persons aged 70-74,  2016: 185 Forecast persons aged 65-69,  2016: 193 Forecast persons aged 60-64,  2016: 239 Forecast persons aged 55-59,  2016: 262 Forecast persons aged 50-54,  2016: 357 Forecast persons aged 45-49,  2016: 419 Forecast persons aged 40-44,  2016: 449 Forecast persons aged 35-39,  2016: 301 Forecast persons aged 30-34,  2016: 196 Forecast persons aged 25-29,  2016: 223 Forecast persons aged 20-24,  2016: 299 Forecast persons aged 15-19,  2016: 390 Forecast persons aged 10-14,  2016: 411 Forecast persons aged 5-9,  2016: 429 Forecast persons aged 0-4,  2016: 332
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: 22 Forecast persons aged 80-84,  2026 to 2036: 9 Forecast persons aged 75-79,  2026 to 2036: 24 Forecast persons aged 70-74,  2026 to 2036: 30 Forecast persons aged 65-69,  2026 to 2036: 36 Forecast persons aged 60-64,  2026 to 2036: -10 Forecast persons aged 55-59,  2026 to 2036: -55 Forecast persons aged 50-54,  2026 to 2036: -43 Forecast persons aged 45-49,  2026 to 2036: 37 Forecast persons aged 40-44,  2026 to 2036: 40 Forecast persons aged 35-39,  2026 to 2036: 22 Forecast persons aged 30-34,  2026 to 2036: 11 Forecast persons aged 25-29,  2026 to 2036: 0 Forecast persons aged 20-24,  2026 to 2036: -19 Forecast persons aged 15-19,  2026 to 2036: -9 Forecast persons aged 10-14,  2026 to 2036: 35 Forecast persons aged 5-9,  2026 to 2036: 27 Forecast persons aged 0-4,  2026 to 2036: 10 Forecast persons aged 85+,  2016 to 2026: -9 Forecast persons aged 80-84,  2016 to 2026: 70 Forecast persons aged 75-79,  2016 to 2026: 35 Forecast persons aged 70-74,  2016 to 2026: -2 Forecast persons aged 65-69,  2016 to 2026: 25 Forecast persons aged 60-64,  2016 to 2026: 38 Forecast persons aged 55-59,  2016 to 2026: 48 Forecast persons aged 50-54,  2016 to 2026: -26 Forecast persons aged 45-49,  2016 to 2026: -104 Forecast persons aged 40-44,  2016 to 2026: -88 Forecast persons aged 35-39,  2016 to 2026: 67 Forecast persons aged 30-34,  2016 to 2026: 73 Forecast persons aged 25-29,  2016 to 2026: 5 Forecast persons aged 20-24,  2016 to 2026: -11 Forecast persons aged 15-19,  2016 to 2026: -31 Forecast persons aged 10-14,  2016 to 2026: -59 Forecast persons aged 5-9,  2016 to 2026: -48 Forecast persons aged 0-4,  2016 to 2026: 61
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 Plateau was ages 40 to 44, which accounted for 9.0% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 30 to 34, which is expected to increase by 73 and account for 5.4% of the total persons.

The largest 5 year age group in 2026 is 0 to 4 years, with a total of 394 persons.

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