Lancaster is located in Lancaster county South carolina with a geographic area of 6.6 square miles. The total population in Lancaster is 9,187 with 44.7% male and 55.3% female. Children under age 5 represent 7.5% of the population, under age 18 equal 25.9% of the population and over age 65 is 18.2% of the population. The median household income is $29,615, per capita income is $23,740. There are a total of 3,532 housing units with 43.5% owner occupied. Education includes 26.1% of residents that are high school graduates and 18.5% with a bachelor's degree or higher. The average temperature in Lancaster in the summer is 77 degrees, and in the winter 43 degrees.