In 1863, Slough became a local government area when a Slough Local Board of Health was elected to represent what is now the central part of the modern Borough. This part of Upton-cum-Chalvey Civil Parish became Slough Urban Sanitary District in 1875. The functions of these two bodies were strengthened in 1894, when Slough Urban District was created, Buckinghamshire County Council having been created in the previous decade. In 1930, there was a major extension westward of the Urban District, and the area was divided into electoral wards for the first time (the new areas of Burnham (Beeches), Farnham (Royal) and Stoke (Poges) (commonly used suffixes) as well as the divisions of the old district Central, Chalvey, Langley and Upton). In 1938, the town became a Municipal Borough by Royal Charter.