Charleston County, SC
History
Charleston County is located in the U.S. state of South Carolina along the Atlantic coast. As of the 2010 census, its population was 350,209, making it the third most populous county in South Carolina (behind Greenville and Richland counties). Its county seat is Charleston. The county was created in 1901 by an act of the South Carolina State Legislature.Source: Wikipedia
Modern Day Adjacent Counties
Berkeley County - northGeorgetown County - northeast
Colleton County - west
Dorchester County - northwest