Gardnertown is a hamlet (and census-designated place) in Orange County, New York, United States. The population was 4,373 at the 2010 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.
Gardnertown is located within the town of Newburgh, and is about 2 miles northwest of the city of Newburgh, a completely separate municipality. It takes its name from Silas Gardner, an early settler whose stone house, a Registered Historic Place, remains in use as a private residence on Route 300 just north of Route 52.
Gardnertown is the geographic center of the Town of Newburgh. Accordingly, most of the governmental buildings, including the Town Hall, the Police Department, and the Code Compliance (Old Town Hall) building, are all located in Gardnertown. The Town Justice Court is located about a mile and a half to the north.