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City of BrimbankPopulation forecast

Cairnlea

Population, households and dwellings

The number of dwellings in Cairnlea is forecast to grow from 3,012 in 2021 to 3,512 in 2041, with the average household size falling from 3.45 to 3.30 by 2041.

This summary shows the results of the forecasts for population, households and dwellings in the City of Brimbank. The period 2021 to 2031, as the short to medium term, is likely to be the most accurate and useful forecast information for immediate planning purposes.

It is important to look at the relationship between population and average household size. If the average household size is falling, then there will need to be growth in the number of households (and dwellings for them to live in) to maintain or grow the population.

Forecast population, households and dwellings
CairnleaForecast year
Summary20212026203120362041
Population10,14410,44210,72611,06711,416
Change in population (5yrs)--298284340349
Average annual change--0.58%0.54%0.63%0.62%
Households2,9183,0383,1603,2813,401
Average household size3.453.413.353.333.30
Population in non private dwellings6595125155185
Dwellings3,0123,1373,2623,3873,512
Dwelling occupancy rate96.8896.8496.8796.8796.84
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), July 2023.

Key findings

In 2021, the total population of Cairnlea was estimated to be 10,144 people. It is expected to increase by over 582 people to 10,726 by 2031, at an average annual growth rate of 0.56%. This is based on an increase of over 242 households during the period, with the average number of persons per household falling from 3.45 to 3.35 by 2031.

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