Basalt is located in Eagle county Colorado with a geographic area of 2.0 square miles. The total population in Basalt is 3,941 with 51.4% male and 48.6% female. Children under age 5 represent 5.7% of the population, under age 18 equal 23.0% of the population and over age 65 is 21.8% of the population. The median household income is $100,551, per capita income is $55,060. There are a total of 1,783 housing units with 62.3% owner occupied. Education includes 13.0% of residents that are high school graduates and 53.7% with a bachelor's degree or higher. The average temperature in Basalt in the summer is 68 degrees, and in the winter 29 degrees.