New Gretna is located in New Jersey. New Gretna, New Jersey has a population of 546. New Gretna is less family-centric than the surrounding county with 28.23% of the households containing married families with children. The county average for households married with children is 32.59%.
The median household income in New Gretna, New Jersey is $61,974. The median household income for the surrounding county is $82,839 compared to the national median of $57,652. The median age of people living in New Gretna is 38.5 years.
The average high temperature in July is 84.7 degrees, with an average low temperature in January of 23.7 degrees. The average rainfall is approximately 44.8 inches per year, with 14.4 inches of snow per year.