Stinson beach is located in Marin county California with a geographic area of 0.9 square miles. The total population in Stinson beach is 583 with 43.9% male and 56.1% female. Children under age 5 represent 1.7% of the population, under age 18 equal 4.5% of the population and over age 65 is 44.8% of the population. The median household income is $120,250, per capita income is $73,394. There are a total of 317 housing units with 49.8% owner occupied. Education includes 16.4% of residents that are high school graduates and 60.9% with a bachelor's degree or higher. The average temperature in Stinson beach in the summer is 76 degrees, and in the winter 43 degrees.