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North Sydney CouncilPopulation forecast

North Sydney Council

Population and age structure

Between 2021 and 2026, the age structure forecasts for North Sydney Council indicate a 8.6% increase in population under working age, a 12.7% increase in population of retirement age, and a 7.4% 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 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 Council - Total persons202120262036Change between 2021 and 2036
Age group (years)Number%Number%Number%Number
0 to 43,4445.04,0055.34,2055.3+761
5 to 92,8814.22,8233.83,1544.0+273
10 to 142,4723.62,7293.62,8893.6+417
15 to 192,1533.12,7503.73,0263.8+873
20 to 243,5135.14,7396.35,1956.5+1,682
25 to 296,8339.98,04610.78,49410.7+1,661
30 to 348,18911.88,57311.49,09011.4+901
35 to 396,91310.06,8609.17,1669.0+253
40 to 445,4417.85,3947.25,4276.8-14
45 to 494,5926.64,6706.24,6105.8+18
50 to 544,2126.14,3025.74,3295.4+117
55 to 593,7985.54,0105.34,1165.2+319
60 to 643,5995.23,5224.73,7354.7+136
65 to 693,1904.63,2464.33,3284.2+138
70 to 743,1364.52,9623.93,0213.8-115
75 to 792,3313.42,7893.72,7883.5+457
80 to 841,4422.12,0282.72,3713.0+929
85 and over1,1881.71,6942.32,4963.1+1,308
Total persons69,327100.075,143100.079,442100.0+10,115
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 Council was ages 30 to 34, which accounted for 11.8% 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 1,226 and account for 6.3% of the total persons.

The largest 5 year age group in 2026 is 30 to 34 years, with a total of 8,573 persons.

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