Penngrove is located in Sonoma county California with a geographic area of 4.0 square miles. The total population in Penngrove is 2,368 with 47.6% male and 52.4% female. Children under age 5 represent 0.0% of the population, under age 18 equal 15.1% of the population and over age 65 is 31.8% of the population. The median household income is $83,289, per capita income is $43,967. There are a total of 1,056 housing units with 64.3% owner occupied. Education includes 13.3% of residents that are high school graduates and 44.4% with a bachelor's degree or higher. The average temperature in Penngrove in the summer is 76 degrees, and in the winter 43 degrees.
