Roslyn Estates, NY has a population of 1,200 and is the 14,035th largest city in the United States. The population density is 2,742 per sq mi which is 664% higher than the New York average and 2926% higher than the national average. The median age in Roslyn Estates is 46 which is approximately 19% higher than the New York average of 38. In Roslyn Estates, 80% of the population over 15 years of age are married, 77% speak English and 1% speak Spanish. 76% of Roslyn Estates residents were born in New York, 6% were born out of state, 1% were born outside of the United States and 17% were foreign born.