The subdivisions of England constitute a hierarchy of administrative divisions and non-administrative ceremonial areas. Overall, England is divided into nine regions and 48 ceremonial counties, although these have only a limited role in public policy. For the purposes of local government, the country is divided into counties, districts and parishes. In some areas, counties and districts form a two-tier administrative structure, while in others they are combined under a unitary authority. Parishes cover only part of England.