Charleston County | |
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Coordinates: 32°48′02″N 79°56′33″W / 32.800458°N 79.94248°W | |
Country | United States |
State | South Carolina |
Founded | January 1, 1800 |
Named for | King Charles II |
Seat | Charleston |
Largest community | Charleston |
Area | |
• Total | 1,357.99 sq mi (3,517.2 km2) |
• Land | 917.98 sq mi (2,377.6 km2) |
• Water | 440.01 sq mi (1,139.6 km2) 32.40% |
Population (2020) | |
• Total | 408,235 |
• Density | 444.71/sq mi (171.70/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Congressional districts | 1st, 6th |
Website | www |
Charleston County is a county in the U.S. state of South Carolina. As of the 2020 census, 408,235 people lived there,[1] making it the third-most populous county in South Carolina (after Greenville and Richland counties). Its county seat is Charleston.[2] The county was formed in 1901.