Hyde Park is a hamlet and census-designated place in the town of Hyde Park, Dutchess County, New York, United States. Its population was 1,908 as of the 2010 census. The hamlet of Hyde Park is on the western side of the town of Hyde Park, bordered on the west by the Hudson River. The northern edge of the hamlet is Crum Elbow Creek, a tributary of the Hudson. On the north side of the creek, just outside the hamlet, is the Vanderbilt Mansion National Historic Site.