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City of SydneyPopulation forecast

City of Sydney

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Sydney indicate a 29.3% increase in females under working age, a 19.7% increase in females of retirement age, and a 31.2% increase in females 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 - Service age groups
City of Sydney - Total females202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
Babies and pre-schoolers (0 to 4)3,6103.65,0843.95,4723.8+1,862
Primary schoolers (5 to 11)3,1793.13,7932.94,3133.0+1,134
Secondary schoolers (12 to 17)2,2012.23,4502.63,9182.7+1,717
Tertiary education and independence (18 to 24)13,52313.320,19715.321,61014.9+8,087
Young workforce (25 to 34)33,53633.040,09430.442,79329.4+9,257
Parents and homebuilders (35 to 49)22,88322.533,08725.136,28524.9+13,402
Older workers and pre-retirees (50 to 59)8,7168.610,2287.812,8768.9+4,160
Empty nesters and retirees (60 to 69)7,1867.17,2795.58,0635.5+877
Seniors (70 to 84)5,6105.57,1285.47,9315.5+2,321
Elderly aged (85 and over)1,1651.11,6301.22,1721.5+1,007
Total persons101,609100.0131,969100.0145,434100.0+43,825
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), November 2022.

Key findings

In 2021, the dominant age structure for females in City of Sydney was ages Young workforce (25 to 34), which accounted for 33.0% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages Parents and homebuilders (35 to 49), which is expected to increase by 10,204 and account for 25.1% of the total females.

The largest female 5 year age group in 2031 is Young workforce (25 to 34) years, with a total of 40,094 females.

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