The population of Northern Ireland on Census Day, Sunday 27 March 2011, was 1,810,863.
Questionnaires
Sample copies of the 2011 Census questionnaires are available to download.
Information on the 2011 Census in Northern Ireland, including how to access the data and supporting documents.
Related statistics
Background
Introduction to the 2011 Census in Northern Ireland, including information on the design, definitions and questionnaires.
Evaluation
Reports evaluating each major stage of the 2011 Census operation, from planning and development through to publication of results.