Crowded or severely crowded households in New Zealand
2013, 2018, & 2023 Census, % of households where information available
The following information applies to all values in the table.
Subject population: Households in occupied private dwellings, Measure: Household crowding index, Unit: Percentage of total stated
You can use this data confidently. Stats NZ rated it as high quality.
For more information, read about response rates below.
Stats NZ gives data an overall rating based on sources and coverage, consistency, and data quality.
Why am I seeing this?
This data is from the Census. The past two censuses had relatively low response rates, particularly for some areas of New Zealand and groups of people.
Where information was missing or unreadable, Stats NZ attempted to use data from a range of places such as previous censuses or administrative data that is collected by other government agencies. If that isn't available, Stats NZ use statistical models to predict what the missing data would have been. This is called imputation.
Things to be aware of
Users should note that Māori and Pacific Peoples typically have lower census response rates, and therefore 'Not stated' is slightly higher for these populations. Overall, ‘Not stated’ has reduced for Māori and Pacific Peoples since 2018.
‘Household composition’ classifies households according to the relationships between usually resident people.
A household is either one person who usually resides alone, or two or more people who usually reside together and share facilities in a home. Included are people who were absent on census night but usually live in a particular dwelling and are members of that household, as long as they were reported as being absent on the dwelling form or the household set-up form.
'Household crowding' is based on the Canadian National Occupancy Standard (CNOS) and provides a derived index of whether a household is crowded or not crowded, based on the number of bedrooms needed for the typology of the household and the number of bedrooms in the dwelling.
Response rates and final data sources
In 2023, 92.3% of household information was derived from census forms. 3.1% of household were enumerated from admin data, while 1.2% were a mix of both census and admin sources. 3.5% of households had no information.
Definitions
Dwelling: A dwelling is any building or structure that is used, or intended to be used, for human habitation. There can be more than one dwelling within a building. For example, each apartment in an apartment building is a dwelling.
Household: either one person who usually resides alone, or two or more people who usually reside together and share facilities in a private dwelling. Included are people who were absent on census night but usually live in a particular dwelling and are members of that household, as long as they were reported as being absent on the dwelling form or the household set-up form.
Response 'stated': Members of the subject population for which the data was obtained through a census form, administrative sources, or imputed.
Data calculation/treatment
This data has been randomly rounded to protect confidentiality. Figure.NZ calculated percentages based on the 'Total stated' values for each variable. Individual percentages may not sum to 100% and values for the same data may vary in different tables.
Geographically the census includes the North Island, South Island, Stewart Island, and the Chatham Islands, plus largely uninhabited islands including the Kermadec Islands, Three Kings Islands, Mayor Island, Motiti Island, White Island, Moutohora Island, Bounty Islands, Snares Islands, Antipodes Islands, Auckland Islands, and Campbell Island.
The New Zealand Census of Population and Dwellings is the official count of how many people and dwellings there are in New Zealand. It provides a snapshot of our society at a point in time and helps to tell the story of its social and economic change. The 2023 Census, held on Tuesday 7 March, was the 35th New Zealand Census of Population and Dwellings. The first official census was run in 1851, and since 1877 there has been a census every five years, with only four exceptions.
Purpose of collection
Census information is used by government agencies, local authorities, businesses, community organisations, and the public for developing and implementing new policies, research, planning, and decision-making. It helps with making decisions about how to best use public funding, especially in areas of health, education, housing, and transport.
The census is also the primary source of information used for deciding the number of general and Māori electorates, along with data from the corresponding Māori Electoral Option.