County Wicklow ( WIK-loh; Irish: Contae Chill Mhantáin [ˈkɔnˠt̪ˠeː ˈçɪl̠ʲ ˈwanˠt̪ˠaːnʲ]) is a county in Ireland. The last of the traditional 32 counties to be formed, as late as 1606, it is part of the Mid-East Region and also part of the traditional province of Leinster. It is named after the town of Wicklow, which derives from the Old Norse name Víkingaló, meaning "Vikings' Meadow". Wicklow County Council is the local authority for the county. The county had a population of 142,425 at the 2016 census.
Wicklow, colloquially known as "the Garden of Ireland", is the 17th-largest of Ireland's 32 counties by area and 16th-largest by population. It is the fourth-largest of Leinster's twelve counties by size and the fifth-largest in terms of population. The adjoining counties are Wexford to the south, Carlow to the south-west, Kildare to the west and Dublin to the north.