Williston is located in Barnwell county South carolina with a geographic area of 9.0 square miles. The total population in Williston is 2,950 with 55.2% male and 44.8% female. Children under age 5 represent 3.5% of the population, under age 18 equal 25.7% of the population and over age 65 is 21.3% of the population. The median household income is $34,149, per capita income is $24,574. There are a total of 1,421 housing units with 49.5% owner occupied. Education includes 20.6% of residents that are high school graduates and 23.0% with a bachelor's degree or higher. The average temperature in Williston in the summer is 77 degrees, and in the winter 43 degrees.
