Mill valley is located in Marin county California with a geographic area of 4.8 square miles. The total population in Mill valley is 14,456 with 47.1% male and 52.9% female. Children under age 5 represent 3.1% of the population, under age 18 equal 20.6% of the population and over age 65 is 20.6% of the population. The median household income is $170,946, per capita income is $113,006. There are a total of 6,118 housing units with 65.9% owner occupied. Education includes 4.6% of residents that are high school graduates and 80.1% with a bachelor's degree or higher. The average temperature in Mill valley in the summer is 76 degrees, and in the winter 43 degrees.
