Red Hook is a town in Dutchess County, New York, United States. The population was 11,319 at the 2010 census. The name is supposedly derived from the red foliage on trees on a small strip of land on the Hudson River. The town contains two villages, Red Hook and Tivoli. The town is in the northwest part of Dutchess County. U.S. Route 9 and State Route 9G pass through the town.