Marlboro is located in Monmouth county New jersey with a geographic area of 0.4 square miles. The total population in Marlboro is 59 with 45.8% male and 54.2% female. Children under age 5 represent 8.5% of the population, under age 18 equal 35.6% of the population and over age 65 is 18.6% of the population. The median household income is $75,313, per capita income is $24,449. There are a total of 27 housing units with 100.0% owner occupied. Education includes 70.4% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Marlboro in the summer is 73 degrees, and in the winter 34 degrees.