Copenhagen, NY has a population of 705 and is the 17,434th largest city in the United States. The population density is 600 per sq mi which is 67% higher than the New York average and 562% higher than the national average. The median age in Copenhagen is 34 which is approximately 11% lower than the New York average of 38. In Copenhagen, 56% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 70% of Copenhagen residents were born in New York, 27% were born out of state, 2% were born outside of the United States and 2% were foreign born.