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Northern Beaches CouncilPopulation forecast

Allambie Heights

Population, households and dwellings

The number of dwellings in Allambie Heights is forecast to grow from 2,345 in 2021 to 2,565 in 2041, with the average household size falling from 3.07 to 2.91 by 2041.

This summary shows the results of the forecasts for population, households and dwellings in the Northern Beaches Council. 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
Allambie HeightsForecast year
Summary20212026203120362041
Population7,1337,1567,2307,3197,386
Change in population (5yrs)--23748968
Average annual change--0.06%0.21%0.24%0.18%
Households2,2692,3222,3752,4272,481
Average household size3.073.012.982.952.91
Population in non private dwellings163163163163163
Dwellings2,3452,4002,4552,5102,565
Dwelling occupancy rate96.7696.7596.7496.6996.73
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), August 2023.

Key findings

In 2021, the total population of Allambie Heights was estimated to be 7,133 people. It is expected to increase by over 97 people to 7,230 by 2031, at an average annual growth rate of 0.14%. This is based on an increase of over 106 households during the period, with the average number of persons per household falling from 3.07 to 2.98 by 2031.

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