Stockton, NJ has a population of 620 and is the 18,232nd largest city in the United States. The population density is 1,135 per sq mi which is 113401% higher than the New Jersey average and 1153% higher than the national average. The median age in Stockton is 46 which is approximately 17% higher than the New Jersey average of 40. In Stockton, 49% of the population over 15 years of age are married, 95% speak English and 5% speak Spanish. 52% of Stockton residents were born in New Jersey, 42% were born out of state, 1% were born outside of the United States and 5% were foreign born.