New Gretna is located in New Jersey. New Gretna, New Jersey has a population of 399. New Gretna is less family-centric than the surrounding county with 21% households with children. The county percentage for households with children is 29%.
The median household income in New Gretna, New Jersey is $72,568. The median household income for the surrounding county is $89,110 compared to the national median of $66,222. The median age of people living in New Gretna is 43.4 years.
The average high temperature in July is 85.8 degrees, with an average low temperature in January of 22.7 degrees. The annual precipitation is 42.86.