Stoke-on-Trent is a city and unitary authority area in Staffordshire, England, with an area of. Together with the neighbouring boroughs of Newcastle-under-Lyme and Staffordshire Moorlands, it is part of North Staffordshire, which, in 2011, had a population of 469,000. Stoke is polycentric, having been formed by a federation of six towns in the early 20th century. It took its name from Stoke-upon-Trent, where the town hall and the railway station are located. Hanley is the primary commercial centre. The four other towns are Burslem, Tunstall, Longton and Fenton. Stoke-on-Trent is the home of the pottery industry in England and is commonly known as the Potteries. Formerly a primarily industrial conurbation, it is now a centre for service industries and distribution centres.