Clayton, NY has a population of 2,041 and is the 10,901st largest city in the United States. The population density is 1,274 per sq mi which is 255% higher than the New York average and 1306% higher than the national average. The median age in Clayton is 38 which is approximately 2% lower than the New York average of 38. In Clayton, 56% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 81% of Clayton residents were born in New York, 16% were born out of state, 1% were born outside of the United States and 2% were foreign born.