Napanoch is a hamlet in Ulster County, New York, United States. It is at the junction of routes 209 and 55. Napanoch is on the Shawangunk Ridge National Scenic Byway, and is part of the Hudson River Valley National Heritage Area. Napanoch is in the Town of Wawarsing, in Ulster County (41.748231, -74.372710). According to the United States Census Bureau, the census-designated place ("CDP") has a total area of 1.2 square miles (3.1 km2), of which 1.2 square miles (3.1 km2) is land and 0.04 square miles (0.10 km2) (2.46%) is water.