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North Sydney CouncilPopulation forecast

North Sydney

Population and age structure

Between 2021 and 2026, the age structure forecasts for North Sydney indicate a 29.5% increase in population under working age, a 16.9% increase in population of retirement age, and a 10.8% 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 North Sydney 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
North Sydney - Total persons202120262036Change between 2021 and 2036
Age group (years)Number%Number%Number%Number
0 to 44184.75835.86015.5+183
5 to 93323.84034.04714.3+139
10 to 142733.13393.44113.8+138
15 to 192893.33703.74584.2+168
20 to 245666.47507.58107.5+244
25 to 291,10512.51,26512.61,31312.1+208
30 to 341,35115.31,37813.81,46513.5+114
35 to 391,01211.51,08610.91,15610.6+143
40 to 446777.77537.58247.6+147
45 to 495336.15885.96626.1+129
50 to 544545.24784.85354.9+81
55 to 594435.04424.44734.4+30
60 to 643203.63663.73703.4+50
65 to 693103.52722.73012.8-9
70 to 742432.82802.82742.5+31
75 to 792202.52222.22272.1+7
80 to 841311.52132.12332.1+101
85 and over1271.42182.22742.5+147
Total persons8,804100.010,007100.010,856100.0+2,052
Source: Population and household forecasts, 2021 to 2036, prepared by .id (informed decisions), March 2024.

Key findings

In 2021, the dominant age structure for persons in North Sydney was ages 30 to 34, which accounted for 15.3% of the total persons.

The largest increase in persons between 2021 and 2026 is forecast to be in ages 20 to 24, which is expected to increase by 184 and account for 7.5% of the total persons.

The largest 5 year age group in 2026 is 30 to 34 years, with a total of 1,378 persons.

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