Sullivan is located in Franklin county Missouri with a geographic area of 8.2 square miles. The total population in Sullivan is 6,499 with 48.4% male and 51.6% female. Children under age 5 represent 7.2% of the population, under age 18 equal 21.5% of the population and over age 65 is 20.2% of the population. The median household income is $46,027, per capita income is $26,302. There are a total of 3,061 housing units with 59.7% owner occupied. Education includes 26.6% of residents that are high school graduates and 22.3% with a bachelor's degree or higher. The average temperature in Sullivan in the summer is 77 degrees, and in the winter 32 degrees.
