Kinderhook, NY has a population of 1,378 and is the 13,190th largest city in the United States. The population density is 655 per sq mi which is 83% higher than the New York average and 623% higher than the national average. The median age in Kinderhook is 54 which is approximately 40% higher than the New York average of 38. In Kinderhook, 70% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 69% of Kinderhook residents were born in New York, 25% were born out of state, 1% were born outside of the United States and 5% were foreign born.