Hopewell Junction is a hamlet and census-designated place (CDP) 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.

Dutchess County is a county in the U.S. state of New York. As of the 2020 census, the population was 295,911. The county seat is the city of Poughkeepsie. The county was created in 1683, one of New York's first twelve counties, and later organized in 1713. The county is part of the Hudson Valley region of the state.