Claymont is located in New castle county Delaware with a geographic area of 2.2 square miles. The total population in Claymont is 9,343 with 50.0% male and 50.0% female. Children under age 5 represent 4.7% of the population, under age 18 equal 18.9% of the population and over age 65 is 14.2% of the population. The median household income is $57,348, per capita income is $31,849. There are a total of 3,871 housing units with 56.7% owner occupied. Education includes 33.0% of residents that are high school graduates and 30.8% with a bachelor's degree or higher. The average temperature in Claymont in the summer is 74 degrees, and in the winter 35 degrees.