Yountville is located in Napa county California with a geographic area of 1.5 square miles. The total population in Yountville is 3,001 with 49.9% male and 50.1% female. Children under age 5 represent 0.5% of the population, under age 18 equal 8.2% of the population and over age 65 is 45.9% of the population. The median household income is $65,519, per capita income is $50,875. There are a total of 1,395 housing units with 62.2% owner occupied. Education includes 14.3% of residents that are high school graduates and 36.1% with a bachelor's degree or higher. The average temperature in Yountville in the summer is 70 degrees, and in the winter 43 degrees.