Boone is located in Boone county Iowa with a geographic area of 9.1 square miles. The total population in Boone is 12,470 with 49.4% male and 50.6% female. Children under age 5 represent 6.6% of the population, under age 18 equal 21.0% of the population and over age 65 is 15.2% of the population. The median household income is $60,854, per capita income is $29,944. There are a total of 5,095 housing units with 72.6% owner occupied. Education includes 31.6% of residents that are high school graduates and 21.3% with a bachelor's degree or higher. The average temperature in Boone in the summer is 72 degrees, and in the winter 23 degrees.