Sedgefield District was, from 1974 to 2009, a

local government district The districts of England (also known as local authority districts or local government districts to distinguish from unofficial city districts) are a level of subnational division of England used for the purposes of local government. As the st ...

and (from 1996),

borough A borough is an administrative division in various English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, although in practice, official use of the term varies widely. History In the Middle A ...

in County Durham, in North East England. It had a population of about 87,000 (

2001 UK 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 ...

). It was named after

Sedgefield Sedgefield is a market town and civil parish in County Durham, England. It had a population of 5,211 as at the 2011 census. It has the only operating racecourse in County Durham. History Roman A Roman 'ladder settlement' was discovered by C ...

, but its largest town was

Newton Aycliffe Newton Aycliffe is a town in County Durham, England. Founded in 1947 under the New Towns Act of 1946, the town sits about five miles to the north of Darlington and ten miles to the south of Durham. It is the oldest new town in the north of Eng ...

. Other places included

Shildon Shildon is a town and civil parish in County Durham, in England. The population taken at the 2011 Census was 9,976. The town has the Locomotion Museum, due to it having the first , built in 1825, and locomotive works on the Stockton and Darli ...

Ferryhill Ferryhill is a town in County Durham, England, with an estimated population in 2018 of 9,362. The town grew in the 1900s around the coal mining industry. The last mine officially closed in 1968. It is located between the towns of Bishop Auckland ...

and

Spennymoor Spennymoor is a town and civil parish in County Durham, England. It is south of the River Wear and is south of Durham. The civil parish includes the villages of Kirk Merrington, Middlestone Moor, Byers Green and Tudhoe. History Origins The ...

. The borough was formed (as Sedgefield District), in 1974, under the Local Government Act 1972, by the merger of Sedgefield Rural District,

and

urban districts and part of Darlington Rural District. The borough was abolished as part of the

2009 structural changes to local government in England Structural changes to local government in England were effected on 1 April 2009, whereby a number of new unitary authorities were created in parts of the country which previously operated a "two-tier" system of counties and districts. In five s ...

. From 1983 to 2007, most of the district was represented in parliament by

Tony Blair Sir Anthony Charles Lynton Blair (born 6 May 1953) is a British former politician who served as Prime Minister of the United Kingdom from 1997 to 2007 and Leader of the Labour Party from 1994 to 2007. He previously served as Leader of th ...

, who became Leader of the Labour Party in 1994, and

Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister i ...

in 1997.

Electoral divisions of the district in pre-2009 Durham County Council

*''Aycliffe East'' Aycliffe Village, Neville and Shafto St Mary's parish wards of Great Aycliffe parish *''Aycliffe North'' Woodham ward; Woodham South parish ward of Great Aycliffe parish *''Aycliffe West'' West ward; Simpasture parish ward of Great Aycliffe parish *''Chilton'' Chilton ward; Cornforth parish; Merrington parish ward of Spennymoor parish *''Ferryhill'' Broom ward; Ferryhill ward *''Sedgefield'' Sedgefield ward; Bishop Middleham parish *''Shildon East'' Greenfield Middridge ward; Thickley ward *''Shildon West'' Byerley ward; Sunnydale ward *''Spennymoor and Middlestone'' Spennymoor ward; Byers Green and Middlestone parish wards of Spennymoor parish *''Trimdon'' Fishburn and Old Trimdon ward; New Trimdon and Trimdon Grange ward *''Tudhoe'' Low Spennymoor and Tudhoe Grange ward; Tudhoe ward English districts abolished in 2009 Former non-metropolitan districts of Durham Former boroughs in England {{Durham-geo-stub