Hewlett Neck, NY has a population of 363 and is the 21,418th largest city in the United States. The population density is 1,885 per sq mi which is 425% higher than the New York average and 1980% higher than the national average. The median age in Hewlett Neck is 45 which is approximately 18% higher than the New York average of 38. In Hewlett Neck, 76% of the population over 15 years of age are married, 76% speak English and 3% speak Spanish. 79% of Hewlett Neck residents were born in New York, 4% were born out of state, 0% were born outside of the United States and 17% were foreign born.