Wappinger is a town in Dutchess County, New York, United States. The town is located in the Hudson River Valley region, on the eastern bank of the Hudson River. The population was 28,216 at the 2020 census. The name is derived from the Wappinger Native Americans who inhabited the area. Wappinger comprises three-fourths of the incorporated village of Wappingers Falls, several unincorporated hamlets such as Brinckerhoff, Chelsea, Diddell, Hughsonville, Middlebush, Myers Corner, New Hackensack, and Swartwoutville, and a number of neighborhoods.