Seven mile is located in Butler county Ohio with a geographic area of 0.7 square miles. The total population in Seven mile is 828 with 53.3% male and 46.7% female. Children under age 5 represent 1.9% of the population, under age 18 equal 27.7% of the population and over age 65 is 18.6% of the population. The median household income is $65,625, per capita income is $26,979. There are a total of 273 housing units with 89.0% owner occupied. Education includes 57.1% of residents that are high school graduates and 20.1% with a bachelor's degree or higher. The average temperature in Seven mile in the summer is 73 degrees, and in the winter 32 degrees.