Census 2021

Information on Census 2021 in Northern Ireland.

Try our Flexible Table Builder to create your own custom Census 2021 tables.

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.

Census 2021 results

Information about Census 2021 statistics, and supporting materials.

Census 2021 news

Find out the latest Census 2021 news.

Census 2021 reference materials

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

Census 2021 evaluation

Reports include the Census 2021 general report and NISRA Flexible Table builder project evaluation.

Census 2021 assurance

Information on the assurance mechanisms for Census 2021.

Census 2021 background

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

Last updated: 09 May 2025