NavGeneral InfoEmail Print Original or alternative title The Northern Ireland Census 1991 Provider Northern Ireland Statistics and Research Agency (NISRA)Tabulations only Geography United Kingdom (GBR) Northern Ireland Coverage type Subnational Time period covered 04/1991 - 04/1991 Data type Census: De factoHouseholdIndividualInterview Summary The 1991 census took place on April 21. The present population of Northern Ireland at the time of the census was 1,573,282, with 530,369 households enumerated. Changes since the 1981 census included the enumeration of naval ships which were counted by the Ministry of Defence, and commercial vessels which were counted at port areas. Keywords Assets, Birth place, Children, Education, Employment, Family composition, Fertility, Health status, Hours worked, Household heat, Housing conditions, Languages, Literacy, Loans, Marital status, Population, Religion, Sanitation, Transportation, Unemployment, Water supply Citation Contributors Department of Health and Social Services (Northern Ireland) Northern Ireland Statistics and Research Agency (NISRA) Funders Department of Health and Social Services (Northern Ireland) Suggested citation Department of Health and Social Services (Northern Ireland), Northern Ireland Statistics and Research Agency (NISRA). United Kingdom - Northern Ireland Population and Housing Census 1991. GHDx Entry last modified on: Aug 5, 2021