2021 Census

Information on Census 2021 in Northern Ireland.


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The population of Northern Ireland on census day, 21 March 2021, was 1,903,175. While the number of households in Northern Ireland was 768,810.


Related statistics


Information about Census 2021 statistics, and supporting materials.

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Outputs prospectus

This prospectus sets out the release plans for Census 2021 statistics in Northern Ireland. The prospectus was last updated on 9 April 2024.

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Census news

Find out the latest Census 2021 news.

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Reference materials

These materials are designed to help users make the most of census data.

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Information on the assurance mechanisms for Census 2021.

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Information on consultations and the planning of the 2021 Census in Northern Ireland.

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