Dayton is located in Greene county Ohio with a geographic area of 55.8 square miles. The total population in Dayton is 140,444 with 49.5% male and 50.5% female. Children under age 5 represent 6.2% of the population, under age 18 equal 20.9% of the population and over age 65 is 13.0% of the population. The median household income is $34,457, per capita income is $22,097. There are a total of 58,748 housing units with 47.1% owner occupied. Education includes 27.0% of residents that are high school graduates and 18.9% with a bachelor's degree or higher. The average temperature in Dayton in the summer is 74 degrees, and in the winter 32 degrees.