Franklin is located in Simpson county Kentucky with a geographic area of 14.7 square miles. The total population in Franklin is 8,909 with 48.6% male and 51.4% female. Children under age 5 represent 7.0% of the population, under age 18 equal 26.9% of the population and over age 65 is 16.4% of the population. The median household income is $45,983, per capita income is $19,834. There are a total of 3,408 housing units with 46.0% owner occupied. Education includes 43.5% of residents that are high school graduates and 13.3% with a bachelor's degree or higher. The average temperature in Franklin in the summer is 76 degrees, and in the winter 36 degrees.