Marmora is located in Cape may county New jersey with a geographic area of 2.0 square miles. The total population in Marmora is 2,519 with 47.8% male and 52.2% female. Children under age 5 represent 2.7% of the population, under age 18 equal 18.8% of the population and over age 65 is 25.0% of the population. The median household income is $95,250, per capita income is $45,908. There are a total of 1,069 housing units with 88.8% owner occupied. Education includes 29.4% of residents that are high school graduates and 42.2% with a bachelor's degree or higher. The average temperature in Marmora in the summer is 73 degrees, and in the winter 34 degrees.