Waterville is located in Marshall county Kansas with a geographic area of 0.5 square miles. The total population in Waterville is 753 with 44.8% male and 55.2% female. Children under age 5 represent 9.7% of the population, under age 18 equal 25.2% of the population and over age 65 is 22.8% of the population. The median household income is $58,264, per capita income is $30,798. There are a total of 287 housing units with 89.5% owner occupied. Education includes 27.2% of residents that are high school graduates and 18.8% with a bachelor's degree or higher. The average temperature in Waterville in the summer is 78 degrees, and in the winter 32 degrees.