New gretna is located in Burlington county New jersey with a geographic area of 0.8 square miles. The total population in New gretna is 360 with 47.5% male and 52.5% female. Children under age 5 represent 4.4% of the population, under age 18 equal 23.3% of the population and over age 65 is 11.1% of the population. The median household income is $91,250, per capita income is $36,524. There are a total of 122 housing units with 91.0% owner occupied. Education includes 18.0% of residents that are high school graduates and 49.2% with a bachelor's degree or higher. The average temperature in New gretna in the summer is 73 degrees, and in the winter 34 degrees.
