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 information you give us helps decide how services are planned and funded in your local area. This could mean things like doctors’ surgeries, housing or new bus routes.
Census Day was Sunday 21 March 2021, but it’s not too late to take part. Visit our dedicated Census 2021 website to find out more about the census in Northern Ireland.
Information on the 2011 Census in Northern Ireland, including how to access the data and supporting documents.
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.