South Nyack is a village located in the town of Orangetown in Rockland County, New York. It is located along the Hudson River, where the Tappan Zee Bridge connects Rockland County with nearby Westchester County. South Nyack located about 25 miles from New York City.

South Nyack has a population of more than 3,000 residents. The village has a total area of 1.7 square miles with 1.1 square miles of water. It is located at an elevation of over 70 feet.