Franklin is located in Johnson county Indiana with a geographic area of 14.0 square miles. The total population in Franklin is 25,276 with 47.4% male and 52.6% female. Children under age 5 represent 6.1% of the population, under age 18 equal 24.0% of the population and over age 65 is 14.9% of the population. The median household income is $60,500, per capita income is $27,085. There are a total of 9,160 housing units with 63.3% owner occupied. Education includes 31.8% of residents that are high school graduates and 23.0% with a bachelor's degree or higher. The average temperature in Franklin in the summer is 73 degrees, and in the winter 29 degrees.