2011 Census

Information on the 2011 Census in Northern Ireland, including how to access the data and supporting documents.

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.

Popular publications

Results

Information about the 2011 Census outputs, reports and supporting information.

Analysis

Selection of short stories developed from the 2011 Census outputs.

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.

Last updated: 03 March 2025