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City of CockburnPopulation forecast

Hamilton Hill

Population and age structure

Between 2021 and 2031, the age structure forecasts for Hamilton Hill indicate a 11.5% increase in population under working age, a 35.2% increase in population of retirement age, and a 3.7% 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 Cockburn 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
Hamilton Hill - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 46385.47255.68105.5+172
5 to 95744.96755.27365.0+162
10 to 145895.06084.76604.5+71
15 to 195544.76174.86334.3+79
20 to 247546.47946.18135.5+59
25 to 298026.87876.18485.8+46
30 to 341,0829.29197.11,0357.0-47
35 to 399728.39727.51,0967.4+124
40 to 447946.89427.39486.4+154
45 to 497956.89027.09256.3+130
50 to 547416.38276.49086.2+167
55 to 597156.17125.58495.8+134
60 to 646195.36455.07765.3+157
65 to 695764.96254.86744.6+98
70 to 745484.75884.56584.5+110
75 to 793813.26004.67224.9+341
80 to 842722.35794.57445.1+472
85 and over3272.84533.58846.0+557
Total persons11,733100.012,970100.014,719100.0+2,986
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the dominant age structure for persons in Hamilton Hill was ages 30 to 34, which accounted for 9.2% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 80 to 84, which is expected to increase by 307 and account for 4.5% of the total persons.

The largest 5 year age group in 2031 is 35 to 39 years, with a total of 972 persons.

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