Boonville is located in Mendocino county California with a geographic area of 5.5 square miles. The total population in Boonville is 997 with 47.5% male and 52.5% female. Children under age 5 represent 1.3% of the population, under age 18 equal 20.2% of the population and over age 65 is 20.5% of the population. The median household income is $46,458, per capita income is $29,365. There are a total of 298 housing units with 50.3% owner occupied. Education includes 25.2% of residents that are high school graduates and 24.8% with a bachelor's degree or higher. The average temperature in Boonville in the summer is 76 degrees, and in the winter 43 degrees.