Sewell is located in Gloucester county New jersey with a geographic area of 2.0 square miles. The total population in Sewell is 3,067 with 50.5% male and 49.5% female. Children under age 5 represent 4.7% of the population, under age 18 equal 16.5% of the population and over age 65 is 12.1% of the population. The median household income is $115,100, per capita income is $52,721. There are a total of 1,179 housing units with 99.2% owner occupied. Education includes 26.1% of residents that are high school graduates and 51.5% with a bachelor's degree or higher. The average temperature in Sewell in the summer is 73 degrees, and in the winter 34 degrees.