Wappingers Falls is a village in the towns of Poughkeepsie and Wappinger, in Dutchess County, New York, United States. As of the 2010 census it had a population of 5,522. The community was named for the cascade in Wappinger Creek. The Wappingers Falls post office covers areas in the towns of Wappinger, Poughkeepsie, Fishkill, East Fishkill, and LaGrange.