Marlboro is located in Windham county Vermont with a geographic area of square miles. The total population in Marlboro is 1,294 with 57.4% male and 42.6% female. Children under age 5 represent 1.5% of the population, under age 18 equal 10.1% of the population and over age 65 is 18.1% of the population. The median household income is $73,393, per capita income is $37,614. There are a total of 373 housing units with 91.4% owner occupied. Education includes 18.8% of residents that are high school graduates and 60.1% with a bachelor's degree or higher. The average temperature in Marlboro in the summer is 65 degrees, and in the winter 19 degrees.