Prestwich was the ecclesiastical centre of Prestwich-cum-Oldham an ancient parish in the Salford Hundred of Lancashire. It was in Manchester Poor Law Union (PLU) from 1841 to 1850 and the Prestwich PLU from 1850 to 1915 when it rejoined Manchester PLU until its abolition in 1930. In 1867 the Prestwich Local Board of Health was established which, as a result of the Local Government Act 1894, became Prestwich Urban District to which parts of Great and Little Heaton townships were added. In 1903 Heaton Park was added to the City of Manchester and in 1933 part of the urban district west of the Irwell was added to Swinton and Pendlebury Urban District. Prestwich became a municipal borough in 1939. Under the Local Government Act 1972 it became an unparished area in the Metropolitan Borough of Bury in Greater Manchester, taking effect on 1 April 1974. The old Prestwich Town Hall has since been converted into a block of flats.