Fort mill is located in Lancaster county South carolina with a geographic area of 19.6 square miles. The total population in Fort mill is 19,920 with 48.6% male and 51.4% female. Children under age 5 represent 6.0% of the population, under age 18 equal 31.0% of the population and over age 65 is 9.0% of the population. The median household income is $101,699, per capita income is $39,778. There are a total of 6,759 housing units with 81.5% owner occupied. Education includes 14.8% of residents that are high school graduates and 57.1% with a bachelor's degree or higher. The average temperature in Fort mill in the summer is 77 degrees, and in the winter 43 degrees.
