Munster is one of the Provinces of Ireland situated in the south of Ireland. In Ancient Ireland, it was one of the fifths ruled by a "king of over-kings" . Following the Norman invasion of Ireland, the ancient kingdoms were shired into a number of counties for administrative and judicial purposes. In later centuries, local government legislation has seen further sub-division of the historic counties.
Munster has no official function for local government purposes. For the purposes of the ISO, the province is listed as one of the provincial sub-divisions of the State and coded as "IE-M". For the purposes of elections to the European Parliament, the province, with the exception of County Clare, is part of the South constituency. Geographically, Munster covers a total area of and has a population of 1,246,088 with the most populated city being Cork. Other significant urban centres in the province include Limerick and Waterford.