County Sligo (Irish: Contae Shligigh) is a county in Ireland.It is located in the Border Region and is also part of the province of Connacht. It is named after the town of Sligo.Sligo County Council is the local authority for the county.nlike its neighboring counties, Sligo has had more success at soccer rather than Gaelic games. The county is home to League of Ireland Premier Division club Sligo Rovers, who have played home matches at The Showgrounds since they were founded in 1928.