Clarksville is located in Montgomery county Tennessee with a geographic area of 99.4 square miles. The total population in Clarksville is 156,092 with 50.2% male and 49.8% female. Children under age 5 represent 9.0% of the population, under age 18 equal 26.9% of the population and over age 65 is 8.4% of the population. The median household income is $55,819, per capita income is $26,312. There are a total of 57,803 housing units with 54.3% owner occupied. Education includes 23.3% of residents that are high school graduates and 30.4% with a bachelor's degree or higher. The average temperature in Clarksville in the summer is 77 degrees, and in the winter 38 degrees.