Geyserville is located in Sonoma county California with a geographic area of 4.5 square miles. The total population in Geyserville is 671 with 53.1% male and 46.9% female. Children under age 5 represent 2.5% of the population, under age 18 equal 16.7% of the population and over age 65 is 21.6% of the population. The median household income is $88,438, per capita income is $46,152. There are a total of 279 housing units with 62.7% owner occupied. Education includes 13.3% of residents that are high school graduates and 30.5% with a bachelor's degree or higher. The average temperature in Geyserville in the summer is 76 degrees, and in the winter 43 degrees.
