Components of population change
The greatest population change for Porirua City is forecast for the period from 2029 to 2033, which is expected to have a net increase of 7,275 people.
There are two ways in which populations can change, through net migration and/or through natural increase (births minus deaths). Some areas are more driven by one or other of these factors. Migration is largely driven by housing development, whereas natural increase is a function of the age of the population.
|Components of population change|
|Porirua City||Forecast period|
|Component||2014 to 2018||2019 to 2023||2024 to 2028||2029 to 2033||2034 to 2038||2039 to 2043|
|Change in persons in non-private dwellings||--||0||70||40||50||50||0|
|Total population change||3,382||4,681||6,731||7,275||5,740||3,640|
Population and household forecasts, 2013 to 2043, prepared by .id (opens a new window), the population experts, January 2020.