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City of SydneyPopulation forecast

City of Sydney

Population and age structure

Between 2016 and 2026, the age structure forecasts for the City of Sydney indicate a 46.0% increase in population under working age, a 45.9% increase in population of retirement age, and a 31.5% 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 City of Sydney 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
City of Sydney - Total persons201620262041Change between 2016 and 2041
Age group (years)Number%Number%Number%Number
0 to 47,8233.510,9653.712,6853.6+4,862
5 to 94,3591.96,4092.17,7172.2+3,358
10 to 143,2221.45,1221.76,3361.8+3,114
15 to 199,3414.218,3986.121,4646.1+12,123
20 to 2431,21913.942,56414.248,34113.6+17,122
25 to 2940,56818.149,26216.455,93015.8+15,362
30 to 3433,10714.841,10113.746,85313.2+13,746
35 to 3920,6539.227,3519.131,4558.9+10,802
40 to 4414,6416.519,3936.522,6016.4+7,960
45 to 4912,0405.415,4045.118,4035.2+6,363
50 to 5410,7424.813,6944.616,4694.6+5,727
55 to 599,6094.312,1914.114,7754.2+5,166
60 to 648,0073.610,4823.512,8083.6+4,801
65 to 697,0373.18,9503.011,1353.1+4,098
70 to 744,6512.17,0762.49,3382.6+4,687
75 to 793,1511.45,3491.87,6062.1+4,455
80 to 842,0930.93,3851.15,7411.6+3,648
85 and over1,9470.92,7830.94,5971.3+2,650
Total persons224,211100.0299,879100.0354,255100.0+130,044
Population and household forecasts, 2016 to 2041, prepared by .id , the population experts, February 2019.

Key findings

In 2016, the dominant age structure for persons in the City of Sydney was ages 25 to 29, which accounted for 18.1% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 20 to 24, which is expected to increase by 11,345 and account for 14.2% of the total persons.

The largest 5 year age group in 2026 is 25 to 29 years, with a total of 49,262 persons.

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