Northern Beaches CouncilPopulation forecast
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Killarney Heights

Population and age structure

Between 2016 and 2026, the age structure forecasts for Killarney Heights indicate a 7.4% decrease in population under working age, a 0.1% decrease in population of retirement age, and a 9.4% 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
Killarney Heights - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 42375.22835.93075.9+70
5 to 94169.13467.23947.5-22
10 to 144359.53787.94278.2-9
15 to 194149.03898.23837.3-31
20 to 242655.82986.22855.4+20
25 to 291352.91763.71763.4+41
30 to 34942.11643.41803.4+86
35 to 391864.12755.83085.9+121
40 to 444209.13607.54168.0-4
45 to 494088.93737.84448.5+36
50 to 544279.33968.33847.3-44
55 to 592535.53186.73085.9+55
60 to 641864.03006.32885.5+103
65 to 691904.11994.22564.9+66
70 to 741663.61573.32494.8+83
75 to 791583.41443.01743.3+15
80 to 84962.11102.31282.5+32
85 and over1102.41092.31222.3+12
Total persons4,598100.04,777100.05,227100.0+630

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: 122 Forecast persons aged 80-84,  2036: 128 Forecast persons aged 75-79,  2036: 174 Forecast persons aged 70-74,  2036: 249 Forecast persons aged 65-69,  2036: 256 Forecast persons aged 60-64,  2036: 288 Forecast persons aged 55-59,  2036: 308 Forecast persons aged 50-54,  2036: 384 Forecast persons aged 45-49,  2036: 444 Forecast persons aged 40-44,  2036: 416 Forecast persons aged 35-39,  2036: 308 Forecast persons aged 30-34,  2036: 180 Forecast persons aged 25-29,  2036: 176 Forecast persons aged 20-24,  2036: 285 Forecast persons aged 15-19,  2036: 383 Forecast persons aged 10-14,  2036: 427 Forecast persons aged 5-9,  2036: 394 Forecast persons aged 0-4,  2036: 307 Forecast persons aged 85+,  2026: 109 Forecast persons aged 80-84,  2026: 110 Forecast persons aged 75-79,  2026: 144 Forecast persons aged 70-74,  2026: 157 Forecast persons aged 65-69,  2026: 199 Forecast persons aged 60-64,  2026: 300 Forecast persons aged 55-59,  2026: 318 Forecast persons aged 50-54,  2026: 396 Forecast persons aged 45-49,  2026: 373 Forecast persons aged 40-44,  2026: 360 Forecast persons aged 35-39,  2026: 275 Forecast persons aged 30-34,  2026: 164 Forecast persons aged 25-29,  2026: 176 Forecast persons aged 20-24,  2026: 298 Forecast persons aged 15-19,  2026: 389 Forecast persons aged 10-14,  2026: 378 Forecast persons aged 5-9,  2026: 346 Forecast persons aged 0-4,  2026: 283 Forecast persons aged 85+,  2016: 110 Forecast persons aged 80-84,  2016: 96 Forecast persons aged 75-79,  2016: 158 Forecast persons aged 70-74,  2016: 166 Forecast persons aged 65-69,  2016: 190 Forecast persons aged 60-64,  2016: 186 Forecast persons aged 55-59,  2016: 253 Forecast persons aged 50-54,  2016: 427 Forecast persons aged 45-49,  2016: 408 Forecast persons aged 40-44,  2016: 420 Forecast persons aged 35-39,  2016: 186 Forecast persons aged 30-34,  2016: 94 Forecast persons aged 25-29,  2016: 135 Forecast persons aged 20-24,  2016: 265 Forecast persons aged 15-19,  2016: 414 Forecast persons aged 10-14,  2016: 435 Forecast persons aged 5-9,  2016: 416 Forecast persons aged 0-4,  2016: 237
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: 13 Forecast persons aged 80-84,  2026 to 2036: 19 Forecast persons aged 75-79,  2026 to 2036: 30 Forecast persons aged 70-74,  2026 to 2036: 91 Forecast persons aged 65-69,  2026 to 2036: 57 Forecast persons aged 60-64,  2026 to 2036: -12 Forecast persons aged 55-59,  2026 to 2036: -10 Forecast persons aged 50-54,  2026 to 2036: -12 Forecast persons aged 45-49,  2026 to 2036: 71 Forecast persons aged 40-44,  2026 to 2036: 56 Forecast persons aged 35-39,  2026 to 2036: 32 Forecast persons aged 30-34,  2026 to 2036: 16 Forecast persons aged 25-29,  2026 to 2036: 0 Forecast persons aged 20-24,  2026 to 2036: -13 Forecast persons aged 15-19,  2026 to 2036: -7 Forecast persons aged 10-14,  2026 to 2036: 48 Forecast persons aged 5-9,  2026 to 2036: 48 Forecast persons aged 0-4,  2026 to 2036: 23 Forecast persons aged 85+,  2016 to 2026: -1 Forecast persons aged 80-84,  2016 to 2026: 13 Forecast persons aged 75-79,  2016 to 2026: -15 Forecast persons aged 70-74,  2016 to 2026: -9 Forecast persons aged 65-69,  2016 to 2026: 8 Forecast persons aged 60-64,  2016 to 2026: 114 Forecast persons aged 55-59,  2016 to 2026: 65 Forecast persons aged 50-54,  2016 to 2026: -31 Forecast persons aged 45-49,  2016 to 2026: -35 Forecast persons aged 40-44,  2016 to 2026: -59 Forecast persons aged 35-39,  2016 to 2026: 89 Forecast persons aged 30-34,  2016 to 2026: 70 Forecast persons aged 25-29,  2016 to 2026: 41 Forecast persons aged 20-24,  2016 to 2026: 33 Forecast persons aged 15-19,  2016 to 2026: -24 Forecast persons aged 10-14,  2016 to 2026: -57 Forecast persons aged 5-9,  2016 to 2026: -70 Forecast persons aged 0-4,  2016 to 2026: 46
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 Killarney Heights was ages 10 to 14, which accounted for 9.5% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 60 to 64, which is expected to increase by 114 and account for 6.3% of the total persons.

The largest 5 year age group in 2026 is 50 to 54 years, with a total of 396 persons.

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