De graff is located in Logan county Ohio with a geographic area of 1.0 square miles. The total population in De graff is 1,397 with 52.5% male and 47.5% female. Children under age 5 represent 3.1% of the population, under age 18 equal 23.4% of the population and over age 65 is 16.8% of the population. The median household income is $60,350, per capita income is $31,876. There are a total of 611 housing units with 80.5% owner occupied. Education includes 41.9% of residents that are high school graduates and 29.5% with a bachelor's degree or higher. The average temperature in De graff in the summer is 73 degrees, and in the winter 32 degrees.
