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City of BaysidePopulation forecast

City of Bayside

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Bayside indicate a 11.1% increase in population under working age, a 17.2% increase in population of retirement age, and a 13.1% 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 Bayside 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 Bayside - Total persons202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 44,6164.55,7705.06,2425.0+1,626
5 to 96,0575.96,7725.87,2995.8+1,242
10 to 147,4627.37,6126.58,2796.6+817
15 to 197,0546.97,6896.68,1716.5+1,117
20 to 245,2885.26,2975.46,5335.2+1,245
25 to 293,7643.74,8094.15,1714.1+1,407
30 to 344,3924.35,4054.75,8684.7+1,476
35 to 395,5205.46,7485.87,2985.8+1,778
40 to 446,4646.37,8566.88,4756.7+2,011
45 to 497,9287.78,4897.39,2227.3+1,294
50 to 548,4458.38,2177.19,1177.2+672
55 to 597,4637.38,0706.98,5026.8+1,039
60 to 646,6396.57,5976.57,5776.0+938
65 to 695,5785.56,5355.67,0365.6+1,458
70 to 745,4105.35,8165.06,5825.2+1,172
75 to 794,1194.04,7044.05,4834.4+1,364
80 to 842,7052.63,8073.34,2613.4+1,556
85 and over3,4333.44,0473.54,7643.8+1,331
Total persons102,337100.0116,240100.0125,879100.0+23,542
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), February 2024.

Key findings

In 2021, the dominant age structure for persons in City of Bayside was ages 50 to 54, which accounted for 8.3% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 1,392 and account for 6.8% of the total persons.

The largest 5 year age group in 2031 is 45 to 49 years, with a total of 8,489 persons.

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