Brielle, NJ has a population of 4,745 and is the 6,690th largest city in the United States. The population density is 2,707 per sq mi which is 270588% higher than the New Jersey average and 2888% higher than the national average. The median age in Brielle is 47 which is approximately 20% higher than the New Jersey average of 40. In Brielle, 70% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 74% of Brielle residents were born in New Jersey, 23% were born out of state, 1% were born outside of the United States and 3% were foreign born.