The counties of England are a type of subdivision of England. Counties have been used as administrative areas in England since Anglo-Saxon times. There are three definitions of county in England: the 48 ceremonial counties used for the purposes of lieutenancy; the 84 metropolitan and non-metropolitan counties for local government; and the 39 historic counties. In most cases a ceremonial county shares its name with a local government county, but often covering a wider area.
The historic counties of England were mostly formed as shires or divisions of the earlier kingdoms, which gradually united by the 10th century to become England. The counties were initially used primarily for the administration of justice, overseen by a sheriff. They subsequently gained other roles, notably serving as constituencies and as areas for organising the militia, which was the responsibility of the lord-lieutenant. The county magistrates also gradually took on some administrative functions.