South River is located in New Jersey. South River, New Jersey has a population of 15,605. South River is less family-centric than the surrounding county with 31% households with children. The county percentage for households with children is 33%.
The median household income in South River, New Jersey is $78,660. The median household income for the surrounding county is $91,657 compared to the national median of $66,222. The median age of people living in South River is 40.3 years.
The average high temperature in July is 85.4 degrees, with an average low temperature in January of 21.1 degrees. The annual precipitation is 48.78.