River Edge, NJ has a population of 11,586 and is the 3,518th largest city in the United States. The population density is 6,322 per sq mi which is 632127% higher than the New Jersey average and 6878% higher than the national average. The median age in River Edge is 42 which is approximately 6% higher than the New Jersey average of 40. In River Edge, 64% of the population over 15 years of age are married, 66% speak English and 9% speak Spanish. 43% of River Edge residents were born in New Jersey, 28% were born out of state, 2% were born outside of the United States and 27% were foreign born.