Castorland, NY has a population of 401 and is the 20,802nd largest city in the United States. The population density is 1,249 per sq mi which is 204% higher than the New York average and 1279% higher than the national average. The median age in Castorland is 42 which is approximately 10% higher than the New York average of 38. In Castorland, 65% of the population over 15 years of age are married, 94% speak English and 0% speak Spanish. 74% of Castorland residents were born in New York, 22% were born out of state, 1% were born outside of the United States and 4% were foreign born.