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is a city in Darlington County, South Carolina, United States. The population was 7,556 at the 2000 census (14,907 total pop. of Hartsville Urban Cluster) and is part of the Florence Metropolitan Statistical Area. The greater Hartsville area's population is an estimated 28,000.
According to the United States Census Bureau, the city has a total area of 13.0 km² (5.0 mi²). 12.9 km² (5.0 mi²) of it is land and 0.1 km² (0.04 mi²) of it (0.60%) is water.