Katonah, NY has a population of 2,077 and is the 10,797th largest city in the United States. The population density is 2,863 per sq mi which is 698% higher than the New York average and 3060% higher than the national average. The median age in Katonah is 40 which is approximately 5% higher than the New York average of 38. In Katonah, 56% of the population over 15 years of age are married, 91% speak English and 6% speak Spanish. 70% of Katonah residents were born in New York, 21% were born out of state, 0% were born outside of the United States and 10% were foreign born.