Jeffersontown is located in Jefferson county Kentucky with a geographic area of 10.3 square miles. The total population in Jeffersontown is 27,933 with 48.0% male and 52.0% female. Children under age 5 represent 6.2% of the population, under age 18 equal 23.2% of the population and over age 65 is 17.0% of the population. The median household income is $70,951, per capita income is $34,912. There are a total of 11,572 housing units with 67.6% owner occupied. Education includes 20.9% of residents that are high school graduates and 42.2% with a bachelor's degree or higher. The average temperature in Jeffersontown in the summer is 76 degrees, and in the winter 36 degrees.