Littleton is located in Arapahoe county Colorado with a geographic area of 12.6 square miles. The total population in Littleton is 46,208 with 48.5% male and 51.5% female. Children under age 5 represent 4.7% of the population, under age 18 equal 18.0% of the population and over age 65 is 17.7% of the population. The median household income is $76,375, per capita income is $47,674. There are a total of 20,300 housing units with 58.9% owner occupied. Education includes 12.9% of residents that are high school graduates and 55.6% with a bachelor's degree or higher. The average temperature in Littleton in the summer is 70 degrees, and in the winter 29 degrees.