Horry County (/ˈɒriː/ ORR-ee) is a county in the U.S. state of South Carolina. As of the 2010 census, its population was 289,650, making it the fifth-most populous county in South Carolina. The county seat is Conway.Horry County is included in the Myrtle Beach-Conway-North Myrtle Beach, SC-NC Metropolitan Statistical Area.