
Williamston
- County:
- Anderson County
- County Seat:
- No
- Area (mi²):
- 3.689
- State:
- South Carolina
Williamston is a town located in Anderson County, South Carolina. Williamston has a 2025 population of 4,329. Williamston is currently growing at a rate of 1.29% annually and its population has increased by 6.78% since the most recent census, which recorded a population of 4,054 in 2020.
The average household income in Williamston is $70,930 with a poverty rate of 13.52%. The median age in Williamston is 38.2 years: 36.6 years for males, and 38.4 years for females.