Harrison is located in Hamilton county Ohio with a geographic area of 5.3 square miles. The total population in Harrison is 12,763 with 46.0% male and 54.0% female. Children under age 5 represent 5.6% of the population, under age 18 equal 27.9% of the population and over age 65 is 13.5% of the population. The median household income is $75,625, per capita income is $32,496. There are a total of 4,983 housing units with 75.8% owner occupied. Education includes 28.0% of residents that are high school graduates and 25.2% with a bachelor's degree or higher. The average temperature in Harrison in the summer is 73 degrees, and in the winter 32 degrees.