United Kingdom 2001 census

A nationwide census, known as Census 2001, was conducted in the United Kingdom on Sunday, 29 April 2001. This was the 20th UK census and recorded a resident population of 58,789,194.

The 2001 UK census was organised by the Office for National Statistics (ONS) in England and Wales, the General Register Office for Scotland (GROS) and the Northern Ireland Statistics and Research Agency (NISRA). Detailed results by region, council area, ward and output area are available from their respective websites.

Similar to previous UK censuses, the 2001 census was organised by the three statistical agencies, ONS, GROS, and NISRA, and coordinated at the national level by the Office for National Statistics. The Orders in Council to conduct the census, specifying the people and information to be included in the census, were made under the authority of the Census Act 1920 in Great Britain, and the Census Act (Northern Ireland) 1969 in Northern Ireland. In England and Wales these regulations were made by the Census Order 2000 (SI 744/2000), in Scotland by the Census (Scotland) Order 2000 (SSI 68/2000), and in Northern Ireland by the Census Order (Northern Ireland) 2000 (SRNI 168/2000).

The census was administered through self-completion forms, in most cases delivered by to households and communal establishments in the three weeks before census night on 29 April. For the first time return by post was used as the main collection method, with enumerators following up in person where the forms were not returned. The postal response rate was 88% in England and Wales, 91% in Scotland, and 92% in Northern Ireland. A total of 81,000 field staff were employed across the UK (70,000 in England and Wales, 8,000 in Scotland and 3,000 in Northern Ireland). The census was conducted at the height of the foot-and-mouth crisis, which led to extra precautions being adopted by the field staff, and suggestions that the census may have to be postponed. However, it was reported that the disease outbreak did not affect the effectiveness of the collection process.

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