Centennial is located in Arapahoe county Colorado with a geographic area of 29.7 square miles. The total population in Centennial is 111,331 with 50.4% male and 49.6% female. Children under age 5 represent 5.5% of the population, under age 18 equal 23.2% of the population and over age 65 is 15.9% of the population. The median household income is $109,767, per capita income is $51,991. There are a total of 40,697 housing units with 81.9% owner occupied. Education includes 9.7% of residents that are high school graduates and 65.3% with a bachelor's degree or higher. The average temperature in Centennial in the summer is 68 degrees, and in the winter 29 degrees.
