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.

According to the United States Census Bureau, as of 2000 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.

The racial demographics of South Nyack are 71.32% White, 16.04% African American, 0.20% Native American, 5.79% Asian, 0.03% Pacific Islander, 2.39% from other races, and 4.23% from two or more races. Hispanic or Latino of any race are 6.91% of the population.

South Nyack has more than 1,000 households. The median income for a household in the village is $53,000, and the median income for a family is $62,262.