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.
Historical population | |||
---|---|---|---|
Census | Pop. | %± | |
1790 | 66,985 | — | |
1800 | 57,480 | −14.2% | |
1810 | 63,179 | 9.9% | |
1820 | 80,212 | 27.0% | |
1830 | 86,338 | 7.6% | |
1840 | 82,661 | −4.3% | |
1850 | 72,805 | −11.9% | |
1860 | 70,100 | −3.7% | |
1870 | 88,863 | 26.8% | |
1880 | 102,800 | 15.7% | |
1890 | 59,903 | −41.7% | |
1900 | 88,006 | 46.9% | |
1910 | 88,594 | 0.7% | |
1920 | 108,450 | 22.4% | |
1930 | 101,050 | −6.8% | |
1940 | 121,105 | 19.8% | |
1950 | 164,856 | 36.1% | |
1960 | 216,382 | 31.3% | |
1970 | 247,650 | 14.5% | |
1980 | 276,974 | 11.8% | |
1990 | 295,039 | 6.5% | |
2000 | 309,969 | 5.1% | |
2010 | 350,209 | 13.0% | |
2020 | 408,235 | 16.6% | |
U.S. Decennial Census[3] 1790–1960[4] 1900–1990[5] 1990–2000[6] 2010–2020[1] |
According to the U.S. Census Bureau, the county has a total area of 1,358 square miles (3,520 km2), of which 916 square miles (2,370 km2) is land and 442 square miles (1,140 km2) (33%) is water.[7] It is the largest county in South Carolina by total land and water area. It is along the Atlantic coast.