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City of CockburnPopulation forecast

Rottnest Island

Population, households and dwellings

The number of dwellings in Rottnest Island is forecast to remain stable from 238 in 2021 to 238 in 2046, with the average household size falling from 1.69 to 1.63 by 2046.

This summary shows the results of the forecasts for population, households and dwellings in the City of Cockburn. 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
Rottnest IslandForecast year
Summary202120262031203620412046
Population172328428446444438
Change in population (5yrs)--1569918-3-6
Average annual change--13.81%5.43%0.84%-0.12%-0.27%
Households68157214227231232
Average household size1.691.731.731.711.671.63
Population in non private dwellings575758585859
Dwellings238238238238238238
Dwelling occupancy rate28.5765.9789.9295.3897.0697.48
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), December 2023.

Key findings

In 2021, the total population of Rottnest Island was estimated to be 172 people. It is expected to increase by over 256 people to 428 by 2031, at an average annual growth rate of 9.54%. This is based on an increase of over 146 households during the period, with the average number of persons per household rising from 1.69 to 1.73 by 2031.

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