Williamston is located in northwest South Carolina. Williamston is part of Anderson County. Williamston has 3.64 square miles of land area and 0.04 square miles of water area. As of 2010-2014, the total Williamston population is 4,003, which has grown 5.59% since 2000. The population growth rate is much lower than the state average rate of 17.83% and is much lower than the national average rate of 11.61%. Williamston median household income is $40,432 in 2010-2014 and has grown by 28.53% since 2000. The income growth rate is higher than the state average rate of 21.44% and is about the same as the national average rate of 27.36%. Williamston median house value is $90,700 in 2010-2014 and has grown by 32.80% since 2000. The house value growth rate is lower than the state average rate of 44.99% and is lower than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Williamston is much better than the state average in quality. The Williamston area code is 864.