South Carolina is made up of fourty-six counties. They range in size from 392 square miles (1,016
square kilometers) in the case of Calhoun County to 1,358 square miles (3,517 square kilometers) in the case of
Charleston County. The least populous county is McCormick County, with only 9,958 residents, while the most
populous county is Greenville County, with a population of 395,357, despite the state's most populous city,
Columbia, being located in Richland County.
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Marlboro County was named for John Churchill, first Duke of Marlborough (1650-1722). The county name was originally
spelled Marlborough, but it was later shortened. The county was created in 1785 as a part of Cheraws District. Welsh
Baptists from Delaware settled in an area of the county known as Welsh Neck around 1737, and they were later joined by
English and Scotch-Irish settlers. Cotton growing made this a wealthy part of the state prior to the Civil War. The town
of Blenheim was also known for its mineral springs. General Sherman's troops passed through the county in 1865, briefly
occupying the town of Bennettsville. Some famous Marlboro County natives are US Congressman and diplomat Robert Blair
Campbell (1791-1862), US and Confederate Congressman John McQueen (1804-1867), and children's advocate Marian Wright
Geography: Land and Water
As reported by the Census Bureau, the county has a total area of 485 square miles (1,257 km2), of which, 480
square miles (1,242 km2) of it is land and 6 square miles (14 km2) of it (1.15%) is water.