Ellendale is located in Sussex county Delaware with a geographic area of 0.4 square miles. The total population in Ellendale is 751 with 55.7% male and 44.3% female. Children under age 5 represent 16.6% of the population, under age 18 equal 36.8% of the population and over age 65 is 7.7% of the population. The median household income is $55,268, per capita income is $18,816. There are a total of 205 housing units with 73.7% owner occupied. Education includes 43.4% of residents that are high school graduates and 4.9% with a bachelor's degree or higher. The average temperature in Ellendale in the summer is 74 degrees, and in the winter 35 degrees.