The County Borough of Dudley was a local government district in the English Midlands from 1865 to 1974. Originally a municipal borough, it became a county borough in 1889, centred on the main town centre of Dudley, along with the suburbs of Netherton and Woodside. Although surrounded by Staffordshire, the borough was associated with Worcestershire for non-administrative purposes, forming an exclave of the county until 1966, when it was transferred to Staffordshire after an expansion of the borough boundaries.