A Hunded

Most of the counties of England were divided into hundreds from the late Saxon period (899–1066).

A hundred is an administrative division that is geographically part of a larger region and the term was in regular use in olden times in England & Wales and can be found referred to in historical documents, particularly Wills & Land contracts.

Additionally, it was formerly use in some parts of the United States, Denmark, Southern Schleswig, Sweden, Finland, Norway, the Bishopric of Ösel–Wiek, Curonia, the Ukrainian state of the Cossack Hetmanate and in Cumberland County in the British Colony of New South Wales. It is still used in other places, including in Australia (in South Australia and the Northern Territory).

Other terms for the hundred in English and other languages include wapentake, herred (Danish and Bokmål Norwegian), herad (Nynorsk Norwegian), hérað (Icelandic), härad or hundare (Swedish), Harde (German), hiird (North Frisian), satakunta or kihlakunta (Finnish), kihelkond (Estonian), kiligunda (Livonian), cantref (Welsh) and sotnia (Slavic).

In Ireland, a similar subdivision of counties is referred to as a barony, and a hundred is a subdivision of a particularly large townland (most townlands are not divided into hundreds).