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City of Port PhillipPopulation forecast

Domain

Population and age structure

Between 2021 and 2027, the age structure forecasts for Domain indicate a 97.3% increase in population under working age, a 66.9% increase in population of retirement age, and a 69.5% 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 City of Port Phillip 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
Domain - Total persons202120272041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 41603.63374.54624.3+302
5 to 9821.91602.12692.5+187
10 to 14491.1771.01631.5+114
15 to 19972.22743.73733.5+276
20 to 243838.786711.51,09610.2+713
25 to 2973216.71,30517.41,67215.6+940
30 to 3474216.91,11914.91,46613.7+724
35 to 3953212.17279.79989.3+466
40 to 443718.54986.67046.6+333
45 to 492465.63785.05415.1+295
50 to 541784.13214.34864.5+308
55 to 591593.62913.94684.4+309
60 to 641222.82583.44354.1+313
65 to 691623.72132.84163.9+254
70 to 742034.62353.13933.7+190
75 to 791192.72082.83193.0+200
80 to 84451.01381.82312.2+186
85 and over80.21021.42051.9+197
Total persons4,390100.07,510100.010,697100.0+6,307
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), November 2022.

Key findings

In 2021, the dominant age structure for persons in Domain was ages 30 to 34, which accounted for 16.9% of the total persons.

The largest increase in persons between 2021 and 2027 is forecast to be in ages 25 to 29, which is expected to increase by 573 and account for 17.4% of the total persons.

The largest 5 year age group in 2027 is 25 to 29 years, with a total of 1,305 persons.

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