Eaton is located in Preble county Ohio with a geographic area of 6.3 square miles. The total population in Eaton is 8,154 with 46.1% male and 53.9% female. Children under age 5 represent 3.3% of the population, under age 18 equal 21.1% of the population and over age 65 is 23.2% of the population. The median household income is $49,375, per capita income is $29,784. There are a total of 3,610 housing units with 66.2% owner occupied. Education includes 40.7% of residents that are high school graduates and 17.4% with a bachelor's degree or higher. The average temperature in Eaton in the summer is 71 degrees, and in the winter 32 degrees.