East Millstone, NJ has a population of 571 and is the 18,744th largest city in the United States. The population density is 256 per sq mi which is 25462% higher than the New Jersey average and 182% higher than the national average. The median age in East Millstone is 47 which is approximately 18% higher than the New Jersey average of 40. In East Millstone, 69% of the population over 15 years of age are married, 83% speak English and 0% speak Spanish. 48% of East Millstone residents were born in New Jersey, 33% were born out of state, 0% were born outside of the United States and 19% were foreign born.