Chesterfield -- U.S. County in South Carolina Population (2000): 42768 Housing Units (2000): 18818 Land area (2000): 798.598009 sq. miles (2068.359261 sq. km) Water area (2000): 7.179659 sq. miles (18.595231 sq. km) Total area (2000): 805.777668 sq. miles (2086.954492 sq. km) Located within: South Carolina (SC), FIPS 45 Location: 34.654172 N, 80.156290 W Headwords: Chesterfield Chesterfield, SC Chesterfield County Chesterfield County, SC