Rutherford, NJ has a population of 18,480 and is the 2,359th largest city in the United States. The population density is 6,645 per sq mi which is 664392% higher than the New Jersey average and 7234% higher than the national average. The median age in Rutherford is 41 which is approximately 4% higher than the New Jersey average of 40. In Rutherford, 60% of the population over 15 years of age are married, 66% speak English and 13% speak Spanish. 53% of Rutherford residents were born in New Jersey, 21% were born out of state, 1% were born outside of the United States and 25% were foreign born.