Rockaway, NJ has a population of 6,472 and is the 5,480th largest city in the United States. The population density is 3,121 per sq mi which is 311958% higher than the New Jersey average and 3344% higher than the national average. The median age in Rockaway is 45 which is approximately 13% higher than the New Jersey average of 40. In Rockaway, 60% of the population over 15 years of age are married, 65% speak English and 19% speak Spanish. 52% of Rockaway residents were born in New Jersey, 18% were born out of state, 2% were born outside of the United States and 29% were foreign born.