From a total population of 15,682, South River has a median age of 37.9. The average age of males, in South River, is 35.9 while the average age of females is 40.1. When you compare this to median age of New Jersey, South River is 1.4 years younger.
The median income of individuals, in South River, is $26,721 while the average household income is $65,509. When comparing the median income of people living in South River to the rest of New Jersey, the average income in South River is $9,638 less.