Rockingham is located in Windham county Vermont with a geographic area of square miles. The total population in Rockingham is 5,008 with 47.5% male and 52.5% female. Children under age 5 represent 6.6% of the population, under age 18 equal 21.5% of the population and over age 65 is 20.8% of the population. The median household income is $60,563, per capita income is $29,816. There are a total of 2,268 housing units with 55.5% owner occupied. Education includes 26.0% of residents that are high school graduates and 34.6% with a bachelor's degree or higher. The average temperature in Rockingham in the summer is 65 degrees, and in the winter 19 degrees.