Keystone is located in Summit county Colorado with a geographic area of 41.4 square miles. The total population in Keystone is 799 with 41.2% male and 58.8% female. Children under age 5 represent 2.4% of the population, under age 18 equal 2.4% of the population and over age 65 is 13.8% of the population. The median household income is $43,232, per capita income is $47,094. There are a total of 434 housing units with 42.4% owner occupied. Education includes 2.3% of residents that are high school graduates and 64.5% with a bachelor's degree or higher. The average temperature in Keystone in the summer is 68 degrees, and in the winter 29 degrees.
