Columbia is located in Boone county Missouri with a geographic area of 66.5 square miles. The total population in Columbia is 122,659 with 48.3% male and 51.7% female. Children under age 5 represent 5.6% of the population, under age 18 equal 18.7% of the population and over age 65 is 11.0% of the population. The median household income is $53,447, per capita income is $31,341. There are a total of 49,371 housing units with 47.4% owner occupied. Education includes 14.5% of residents that are high school graduates and 52.0% with a bachelor's degree or higher. The average temperature in Columbia in the summer is 75 degrees, and in the winter 32 degrees.