Grand junction is located in Mesa county Colorado with a geographic area of 39.6 square miles. The total population in Grand junction is 62,218 with 48.9% male and 51.1% female. Children under age 5 represent 5.5% of the population, under age 18 equal 18.8% of the population and over age 65 is 19.3% of the population. The median household income is $54,570, per capita income is $31,427. There are a total of 25,760 housing units with 60.6% owner occupied. Education includes 22.6% of residents that are high school graduates and 35.6% with a bachelor's degree or higher. The average temperature in Grand junction in the summer is 74 degrees, and in the winter 29 degrees.