Sebastopol is located in Sonoma county California with a geographic area of 1.9 square miles. The total population in Sebastopol is 7,664 with 47.0% male and 53.0% female. Children under age 5 represent 4.0% of the population, under age 18 equal 16.8% of the population and over age 65 is 23.8% of the population. The median household income is $83,856, per capita income is $42,646. There are a total of 3,269 housing units with 55.5% owner occupied. Education includes 11.8% of residents that are high school graduates and 51.9% with a bachelor's degree or higher. The average temperature in Sebastopol in the summer is 66 degrees, and in the winter 43 degrees.