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Blue Mountains City CouncilPopulation forecast

Blue Mountains City Council

Population and age structure

Between 2016 and 2026, the age structure forecasts for Blue Mountains City Council indicate a 6.3% decrease in population under working age, a 31.9% increase in population of retirement age, and a 4.9% 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 Blue Mountains City Council 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
Blue Mountains City Council - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 44,5715.84,2415.34,2945.2-277
5 to 95,1146.54,6805.84,7565.7-358
10 to 145,0296.44,8646.14,8945.9-134
15 to 194,9186.24,6185.84,5385.5-380
20 to 243,9285.03,7324.73,7394.5-189
25 to 293,5374.53,4234.33,4464.2-91
30 to 344,0445.13,7504.73,8364.6-208
35 to 394,5065.74,4105.54,5645.5+58
40 to 445,4536.94,9416.25,0356.1-418
45 to 495,6027.15,0376.35,1356.2-467
50 to 545,5047.05,5947.05,4246.5-81
55 to 595,9647.65,7567.25,5656.7-398
60 to 645,7637.35,5586.95,7416.9-22
65 to 695,3336.85,5546.95,5686.7+235
70 to 743,7924.84,9706.25,0266.1+1,234
75 to 792,3793.04,1015.14,4875.4+2,108
80 to 841,6772.12,6313.33,5044.2+1,827
85 and over1,5932.02,2322.83,2924.0+1,699
Total persons78,707100.080,089100.082,844100.0+4,138
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 Blue Mountains City Council was ages 55 to 59, which accounted for 7.6% 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 1,722 and account for 5.1% of the total persons.

The largest 5 year age group in 2026 is 55 to 59 years, with a total of 5,756 persons.

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