South River is located in New Jersey. South River, New Jersey has a population of 16,087. South River is less family-centric than the surrounding county with 29.17% of the households containing married families with children. The county average for households married with children is 36.67%.
The median household income in South River, New Jersey is $82,031. The median household income for the surrounding county is $96,883 compared to the national median of $69,021. The median age of people living in South River is 37.1 years.
The average high temperature in July is 85.9 degrees, with an average low temperature in January of 22.4 degrees. The average rainfall is approximately 49 inches per year, with 23.3 inches of snow per year.