Smithville is located in Dekalb county Tennessee with a geographic area of 5.9 square miles. The total population in Smithville is 4,781 with 46.5% male and 53.5% female. Children under age 5 represent 5.1% of the population, under age 18 equal 23.3% of the population and over age 65 is 14.5% of the population. The median household income is $32,720, per capita income is $17,562. There are a total of 1,812 housing units with 41.6% owner occupied. Education includes 29.9% of residents that are high school graduates and 14.6% with a bachelor's degree or higher. The average temperature in Smithville in the summer is 74 degrees, and in the winter 38 degrees.
