Kerhonkson is a hamlet and census-designated place (CDP) in Ulster County, New York, United States. The population was 1,722 at the 2020 census.

Ulster County is a county in the U.S. state of New York. It is situated along the Hudson River. As of the 2020 census, the population was 181,851. The county seat is Kingston. The county is named after the Irish province of Ulster. The county is part of the Hudson Valley region of the state.