The United Kingdom Census 1971 was a census of the United Kingdom of Great Britain and Northern Ireland carried out on 25 April 1971. The census will be released after 100 years. According to the preliminary general results of the census, the population of the United Kingdom on 25 April 1971 was as follows: See also Census in the United Kingdom List of United Kingdom censuses References 1971 Census April 1971 events in the United Kingdom