Sun valley is located in Washoe county Nevada with a geographic area of 14.6 square miles. The total population in Sun valley is 21,179 with 51.8% male and 48.2% female. Children under age 5 represent 7.9% of the population, under age 18 equal 27.1% of the population and over age 65 is 12.5% of the population. The median household income is $56,503, per capita income is $21,956. There are a total of 6,687 housing units with 68.6% owner occupied. Education includes 26.7% of residents that are high school graduates and 9.4% with a bachelor's degree or higher. The average temperature in Sun valley in the summer is 84 degrees, and in the winter 48 degrees.