Erma is located in New Jersey. Erma, New Jersey has a population of 2,161. Erma is more family-centric than the surrounding county with 38.2% of the households containing married families with children. The county average for households married with children is 23.98%.
The median household income in Erma, New Jersey is $79,886. The median household income for the surrounding county is $62,332 compared to the national median of $57,652. The median age of people living in Erma is 41.6 years.
The average high temperature in July is 84.4 degrees, with an average low temperature in January of 24.4 degrees. The average rainfall is approximately 44 inches per year, with 11.5 inches of snow per year.