Shelton is located in Mason county Washington with a geographic area of 5.8 square miles. The total population in Shelton is 10,467 with 49.5% male and 50.5% female. Children under age 5 represent 8.6% of the population, under age 18 equal 28.4% of the population and over age 65 is 14.5% of the population. The median household income is $46,481, per capita income is $20,652. There are a total of 3,416 housing units with 50.5% owner occupied. Education includes 28.0% of residents that are high school graduates and 15.8% with a bachelor's degree or higher. The average temperature in Shelton in the summer is 63 degrees, and in the winter 42 degrees.