Castorland, NY has a population of 365 and is the 21,384th largest city in the United States. The population density is 1,137 per sq mi which is 217% higher than the New York average and 1155% higher than the national average. The median age in Castorland is 34 which is approximately 12% lower than the New York average of 38. In Castorland, 57% of the population over 15 years of age are married, 92% speak English and 7% speak Spanish. 86% of Castorland residents were born in New York, 8% were born out of state, 2% were born outside of the United States and 4% were foreign born.