Folly Beach is a city in Charleston County, South Carolina, United States. The population was 2,117 at the 2000 census. As defined by the U.S. Census Bureau, Folly Beach is included within the Charleston-North Charleston Urbanized Area and the larger Charleston-North Charleston Metropolitan Statistical Area. Folly Beach apartments for rent comparison page shows most up to date rent information on Folly Beach apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.