Red Hook is a town in Dutchess County, New York, United States. The population was reported to be 11,319 during 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; the village of Red Hook and the village of Tivoli. The town is in the northwest part of Dutchess County. US 9 and State Route 9G pass through the town. The town also contains two hamlets.