Mendota is located in Washington county Virginia with a geographic area of 1.0 square miles. The total population in Mendota is 155 with 56.8% male and 43.2% female. Children under age 5 represent 0.0% of the population, under age 18 equal 29.0% of the population and over age 65 is 13.5% of the population. The median household income is $47,177, per capita income is $20,980. There are a total of 54 housing units with 100.0% owner occupied. Education includes 22.2% of residents that are high school graduates and 20.4% with a bachelor's degree or higher. The average temperature in Mendota in the summer is 71 degrees, and in the winter 35 degrees.