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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 8.4% increase in females under working age, a 19.2% increase in females of retirement age, and a 13.3% 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 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 females202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 42,3224.42,7634.62,9894.5+667
5 to 92,9135.53,2405.33,4995.3+586
10 to 143,6946.93,6756.13,9516.0+257
15 to 193,4066.43,6216.03,8315.8+425
20 to 242,4654.62,9934.93,0704.7+605
25 to 291,8753.52,4204.02,5863.9+711
30 to 342,3284.42,8494.73,0914.7+763
35 to 392,9625.63,6065.93,8905.9+928
40 to 443,4846.54,2477.04,5827.0+1,098
45 to 494,2357.94,5487.54,9427.5+707
50 to 544,3808.24,3007.14,7917.3+411
55 to 593,9257.44,2287.04,4736.8+548
60 to 643,4246.44,0066.64,0226.1+598
65 to 693,0235.73,6126.03,8655.9+842
70 to 742,9005.43,2435.33,6985.6+798
75 to 792,2454.22,6854.43,1534.8+908
80 to 841,5122.82,1303.52,4253.7+913
85 and over2,1924.12,4784.12,9704.5+778
Total persons53,285100.060,644100.065,827100.0+12,542
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), February 2024.

Key findings

In 2021, the dominant age structure for females in City of Bayside was ages 50 to 54, which accounted for 8.2% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 763 and account for 7.0% of the total females.

The largest female 5 year age group in 2031 is 45 to 49 years, with a total of 4,548 females.

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