Duvall is located in King county Washington with a geographic area of 2.5 square miles. The total population in Duvall is 7,979 with 47.7% male and 52.3% female. Children under age 5 represent 8.1% of the population, under age 18 equal 29.8% of the population and over age 65 is 5.5% of the population. The median household income is $162,622, per capita income is $61,012. There are a total of 2,703 housing units with 94.5% owner occupied. Education includes 4.4% of residents that are high school graduates and 67.7% with a bachelor's degree or higher. The average temperature in Duvall in the summer is 60 degrees, and in the winter 42 degrees.
