Centralia is located in Boone county Missouri with a geographic area of 2.9 square miles. The total population in Centralia is 4,260 with 46.6% male and 53.4% female. Children under age 5 represent 7.2% of the population, under age 18 equal 23.4% of the population and over age 65 is 21.2% of the population. The median household income is $55,938, per capita income is $26,030. There are a total of 1,803 housing units with 73.0% owner occupied. Education includes 31.8% of residents that are high school graduates and 30.0% with a bachelor's degree or higher. The average temperature in Centralia in the summer is 77 degrees, and in the winter 32 degrees.
