Knoxville is located in Johnson county Arkansas with a geographic area of 3.2 square miles. The total population in Knoxville is 623 with 50.7% male and 49.3% female. Children under age 5 represent 4.3% of the population, under age 18 equal 21.7% of the population and over age 65 is 19.1% of the population. The median household income is $42,813, per capita income is $22,611. There are a total of 248 housing units with 92.3% owner occupied. Education includes 37.5% of residents that are high school graduates and 12.1% with a bachelor's degree or higher. The average temperature in Knoxville in the summer is 78 degrees, and in the winter 37 degrees.
