Huntsville is located in Madison county Arkansas with a geographic area of 5.4 square miles. The total population in Huntsville is 2,544 with 53.6% male and 46.4% female. Children under age 5 represent 14.7% of the population, under age 18 equal 37.1% of the population and over age 65 is 10.6% of the population. The median household income is $40,737, per capita income is $16,044. There are a total of 813 housing units with 47.7% owner occupied. Education includes 42.4% of residents that are high school graduates and 9.3% with a bachelor's degree or higher. The average temperature in Huntsville in the summer is 76 degrees, and in the winter 37 degrees.