Sun valley is located in SUN VALLEY Idaho with a geographic area of 9.6 square miles. The total population in Sun valley is 1,581 with 50.2% male and 49.8% female. Children under age 5 represent 2.5% of the population, under age 18 equal 8.4% of the population and over age 65 is 39.2% of the population. The median household income is $59,773, per capita income is $52,234. There are a total of 580 housing units with 87.2% owner occupied. Education includes 2.4% of residents that are high school graduates and 74.3% with a bachelor's degree or higher. The average temperature in Sun valley in the summer is 59 degrees, and in the winter 24 degrees.