Willoughby City CouncilPopulation forecast
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This forecast has been updated with 2016 Census dwelling counts and the 2016 Estimated Resident Population. More information can be found here.

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Willoughby City

Population and age structure

Between 2016 and 2026, the age structure forecasts for Willoughby City indicate a 0.9% increase in population under working age, a 27.8% increase in population of retirement age, and a 10.1% 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 Willoughby City 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
Willoughby City - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 4 5,2876.85,3416.25,5636.1+276
5 to 9 5,4597.05,1195.95,2625.7-197
10 to 14 4,3735.64,7905.54,8365.3+462
15 to 19 4,2025.45,4536.35,3195.8+1,117
20 to 24 4,8856.35,8966.86,2086.8+1,323
25 to 29 5,6667.36,3297.36,9277.5+1,261
30 to 34 6,6048.56,7057.87,2097.8+605
35 to 39 6,6008.56,7337.87,0857.7+485
40 to 44 6,1787.96,5737.66,6927.3+515
45 to 49 5,4587.06,0377.06,1646.7+706
50 to 54 4,8576.25,2946.15,5326.0+675
55 to 59 4,1885.44,5265.24,8475.3+659
60 to 64 3,6824.74,0814.74,3594.7+677
65 to 69 3,3874.33,5944.23,8474.2+460
70 to 74 2,3213.03,1313.63,4993.8+1,179
75 to 79 1,7112.22,7963.23,0993.4+1,388
80 to 84 1,3701.81,9132.22,5672.8+1,197
85 and over1,7902.32,0882.42,8333.1+1,043
Total persons78,018100.086,399100.091,848100.0+13,830

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: 2,833 Forecast persons aged 80-84,  2036: 2,567 Forecast persons aged 75-79,  2036: 3,099 Forecast persons aged 70-74,  2036: 3,499 Forecast persons aged 65-69,  2036: 3,847 Forecast persons aged 60-64,  2036: 4,359 Forecast persons aged 55-59,  2036: 4,847 Forecast persons aged 50-54,  2036: 5,532 Forecast persons aged 45-49,  2036: 6,164 Forecast persons aged 40-44,  2036: 6,692 Forecast persons aged 35-39,  2036: 7,085 Forecast persons aged 30-34,  2036: 7,209 Forecast persons aged 25-29,  2036: 6,927 Forecast persons aged 20-24,  2036: 6,208 Forecast persons aged 15-19,  2036: 5,319 Forecast persons aged 10-14,  2036: 4,836 Forecast persons aged 5-9,  2036: 5,262 Forecast persons aged 0-4,  2036: 5,563 Forecast persons aged 85+,  2026: 2,088 Forecast persons aged 80-84,  2026: 1,913 Forecast persons aged 75-79,  2026: 2,796 Forecast persons aged 70-74,  2026: 3,131 Forecast persons aged 65-69,  2026: 3,594 Forecast persons aged 60-64,  2026: 4,081 Forecast persons aged 55-59,  2026: 4,526 Forecast persons aged 50-54,  2026: 5,294 Forecast persons aged 45-49,  2026: 6,037 Forecast persons aged 40-44,  2026: 6,573 Forecast persons aged 35-39,  2026: 6,733 Forecast persons aged 30-34,  2026: 6,705 Forecast persons aged 25-29,  2026: 6,329 Forecast persons aged 20-24,  2026: 5,896 Forecast persons aged 15-19,  2026: 5,453 Forecast persons aged 10-14,  2026: 4,790 Forecast persons aged 5-9,  2026: 5,119 Forecast persons aged 0-4,  2026: 5,341 Forecast persons aged 85+,  2016: 1,790 Forecast persons aged 80-84,  2016: 1,370 Forecast persons aged 75-79,  2016: 1,711 Forecast persons aged 70-74,  2016: 2,321 Forecast persons aged 65-69,  2016: 3,387 Forecast persons aged 60-64,  2016: 3,682 Forecast persons aged 55-59,  2016: 4,188 Forecast persons aged 50-54,  2016: 4,857 Forecast persons aged 45-49,  2016: 5,458 Forecast persons aged 40-44,  2016: 6,178 Forecast persons aged 35-39,  2016: 6,600 Forecast persons aged 30-34,  2016: 6,604 Forecast persons aged 25-29,  2016: 5,666 Forecast persons aged 20-24,  2016: 4,885 Forecast persons aged 15-19,  2016: 4,202 Forecast persons aged 10-14,  2016: 4,373 Forecast persons aged 5-9,  2016: 5,459 Forecast persons aged 0-4,  2016: 5,287
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: 745 Forecast persons aged 80-84,  2026 to 2036: 655 Forecast persons aged 75-79,  2026 to 2036: 303 Forecast persons aged 70-74,  2026 to 2036: 368 Forecast persons aged 65-69,  2026 to 2036: 253 Forecast persons aged 60-64,  2026 to 2036: 278 Forecast persons aged 55-59,  2026 to 2036: 320 Forecast persons aged 50-54,  2026 to 2036: 238 Forecast persons aged 45-49,  2026 to 2036: 127 Forecast persons aged 40-44,  2026 to 2036: 119 Forecast persons aged 35-39,  2026 to 2036: 352 Forecast persons aged 30-34,  2026 to 2036: 504 Forecast persons aged 25-29,  2026 to 2036: 598 Forecast persons aged 20-24,  2026 to 2036: 312 Forecast persons aged 15-19,  2026 to 2036: -134 Forecast persons aged 10-14,  2026 to 2036: 46 Forecast persons aged 5-9,  2026 to 2036: 143 Forecast persons aged 0-4,  2026 to 2036: 222 Forecast persons aged 85+,  2016 to 2026: 298 Forecast persons aged 80-84,  2016 to 2026: 543 Forecast persons aged 75-79,  2016 to 2026: 1,085 Forecast persons aged 70-74,  2016 to 2026: 811 Forecast persons aged 65-69,  2016 to 2026: 207 Forecast persons aged 60-64,  2016 to 2026: 398 Forecast persons aged 55-59,  2016 to 2026: 339 Forecast persons aged 50-54,  2016 to 2026: 437 Forecast persons aged 45-49,  2016 to 2026: 579 Forecast persons aged 40-44,  2016 to 2026: 395 Forecast persons aged 35-39,  2016 to 2026: 133 Forecast persons aged 30-34,  2016 to 2026: 101 Forecast persons aged 25-29,  2016 to 2026: 663 Forecast persons aged 20-24,  2016 to 2026: 1,011 Forecast persons aged 15-19,  2016 to 2026: 1,251 Forecast persons aged 10-14,  2016 to 2026: 417 Forecast persons aged 5-9,  2016 to 2026: -340 Forecast persons aged 0-4,  2016 to 2026: 54
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 Willoughby City 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 15 to 19 , which is expected to increase by 1,251 and account for 6.3% of the total persons.

The largest 5 year age group in 2026 is 35 to 39 years, with a total of 6,733 persons.

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