The Diocese of Lichfield is a Church of England diocese in the Province of Canterbury, England. The bishop's seat is located in the Cathedral Church of the Blessed Virgin Mary and Saint Chad in the city of Lichfield. The diocese covers 4,516 km2 (1,744 sq mi) of several counties: all of Staffordshire, northern Shropshire, a significant portion of the West Midlands, and very small portions of Warwickshire and Powys (Wales).