Delaware in United States with a geographic area of 2,489.3 square miles. The total population in Delaware is 967,679 with 48.3% male and 51.7% female. Children under age 5 represent 5.7% of the population, under age 18 equal 21.1% of the population and over age 65 is 18.8% of the population. The median household income is $69,110, per capita income is $36,574. There are a total of 370,953 housing units with 71.4% owner occupied. Education includes 27.6% of residents that are high school graduates and 36.1% with a bachelor's degree or higher. The average temperature in Delaware in the summer is 74 degrees, and in the winter 36 degrees.