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.
The online census has now closed, but it's not too late to take part. You can still complete and return the paper form that we sent you in the post. Visit our dedicated Census 2021 website to request a new paper form.
The Census Coverage Survey (CCS) is a small survey undertaken shortly after the census which helps us to assess if any people have been missed. Find out more about the CCS on our dedicated Census 2021 website.
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.