Kirkwood is located in St. louis county Missouri with a geographic area of 9.2 square miles. The total population in Kirkwood is 27,772 with 46.5% male and 53.5% female. Children under age 5 represent 6.0% of the population, under age 18 equal 25.7% of the population and over age 65 is 20.7% of the population. The median household income is $94,067, per capita income is $50,386. There are a total of 11,423 housing units with 73.6% owner occupied. Education includes 8.0% of residents that are high school graduates and 66.9% with a bachelor's degree or higher. The average temperature in Kirkwood in the summer is 77 degrees, and in the winter 32 degrees.