Deferiet, NY has a population of 341 and is the 21,770th largest city in the United States. The population density is 506 per sq mi which is 41% higher than the New York average and 458% higher than the national average. The median age in Deferiet is 33 which is approximately 13% lower than the New York average of 38. In Deferiet, 47% of the population over 15 years of age are married, 93% speak English and 0% speak Spanish. 72% of Deferiet residents were born in New York, 23% were born out of state, 2% were born outside of the United States and 3% were foreign born.