Nashville is located in Washington county Illinois with a geographic area of 3.1 square miles. The total population in Nashville is 3,076 with 47.0% male and 53.0% female. Children under age 5 represent 5.2% of the population, under age 18 equal 19.7% of the population and over age 65 is 23.7% of the population. The median household income is $56,019, per capita income is $29,433. There are a total of 1,378 housing units with 67.4% owner occupied. Education includes 30.0% of residents that are high school graduates and 25.3% with a bachelor's degree or higher. The average temperature in Nashville in the summer is 76 degrees, and in the winter 27 degrees.
