Columbus is located in Delaware county Ohio with a geographic area of 220.0 square miles. The total population in Columbus is 889,079 with 48.8% male and 51.2% female. Children under age 5 represent 7.2% of the population, under age 18 equal 22.3% of the population and over age 65 is 10.4% of the population. The median household income is $54,902, per capita income is $30,056. There are a total of 362,626 housing units with 44.9% owner occupied. Education includes 22.1% of residents that are high school graduates and 40.0% with a bachelor's degree or higher. The average temperature in Columbus in the summer is 73 degrees, and in the winter 32 degrees.