Hopewell Junction is a hamlet and census-designated place in Dutchess County, New York, United States. The population was 1330 at the 2020 census. It is part of the Poughkeepsie–Newburgh–Middletown, NY Metropolitan Statistical Area as well as the larger New York–Newark–Bridgeport, NY-NJ-CT-PA Combined Statistical Area. Hopewell Junction is located within the town of East Fishkill.