Banstead (bănˈstĕd, –stəd) [key], town (1991 pop. 43,163), Surrey, SE England, on the North Downs. Banstead is mainly residential and comprises some highly regarded landscapes. A church from the Norman period and an excavated Roman villa are there. The area is mentioned in the Domesday Book. Banstead and the larger city of Reigate constitute the district of Reigate and Banstead.