South river is located in Middlesex county New jersey with a geographic area of 2.8 square miles. The total population in South river is 15,874 with 49.6% male and 50.4% female. Children under age 5 represent 6.2% of the population, under age 18 equal 23.7% of the population and over age 65 is 14.7% of the population. The median household income is $77,382, per capita income is $35,270. There are a total of 5,905 housing units with 61.9% owner occupied. Education includes 35.3% of residents that are high school graduates and 28.6% with a bachelor's degree or higher. The average temperature in South river in the summer is 73 degrees, and in the winter 34 degrees.
