Dover Plains, NY has a population of 1,027 and is the 14,977th largest city in the United States. The population density is 1,518 per sq mi which is 323% higher than the New York average and 1576% higher than the national average. The median age in Dover Plains is 46 which is approximately 21% higher than the New York average of 38. In Dover Plains, 41% of the population over 15 years of age are married, 82% speak English and 14% speak Spanish. 65% of Dover Plains residents were born in New York, 20% were born out of state, 3% were born outside of the United States and 13% were foreign born.