population of williamston sc
Williamston is located in Anderson County in South Carolina. 1  Population: 3,951. 2  Area: 3.68 sq. miles Land Area: 3.64 sq. miles. 3  Population Density: 1,073.93 people per sq. mile.  Elevation: 806.10 1  ft. Time Zone: Eastern Standard Time (GMT 2  -5) Daylight Savings:  Yes.