South Nyack is a village incorporated in 1878 in the town of Orangetown in Rockland County, New York, in the United States. It is located north of Grand View-on-Hudson, northeast of Orangeburg, east of Blauvelt State Park, south of Nyack and west of the Hudson River. The village is the western terminus of the Tappan Zee Bridge. Its population was 3,510 at the 2010 census.