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The census happens only once every 10 years. It gives us the most accurate estimate of all the people and households in Northern Ireland.

The last census in Northern Ireland took place on 21 March 2021.

Related statistics

2021 Census

Information on Census 2021 in Northern Ireland.


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2011 Census

Information on the 2011 Census in Northern Ireland, including how to access the data and supporting documents.



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2001 and earlier censuses

This section relates to Northern Ireland census reports since 1926. Most publications were produced on paper and are only available online as a PDF document.

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History of the census

Information on background and history of census taking.

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