County Waterford (Irish: Contae Phort Láirge; the English name comes from Norse Vedrafjörður) is a county in Ireland. It is part of the South-East Region and is also located in the province of Munster.
It is named after the city of Waterford which is derived from the Old Norse name Veðrafjǫrðr or Vedrarfjord. There is an Irish-speaking area in the south of the county. Waterford City and County Council is the local authority for the county. The population of the county at large, including the city, is 113,795 according to the 2011 census.
County Waterford has two mountain ranges, the Knockmealdown Mountains and the Comeragh Mountains. The highest point in the county is Knockmealdown, at 794m. It also has many rivers, including Ireland's 3rd longest river, the River Suir (184 km); and Ireland's fourth longest river, the Munster Blackwater (168 km).