The Incorporated Village of Sea Cliff is a village located within the Town of Oyster Bay in Nassau County, New York. As of the United States 2010 Census, the village population was 4,995. The village is part of the North Shore School District. According to the United States Census Bureau, the village has a total area of 2.0 square miles (5.2 km2), of which, 1.1 square miles (2.8 km2) of it is land and 0.9 square miles (2.3 km2) of it (44.67%) is water. Several buildings in Sea Cliff, mostly Victorian houses, are listed on the National Register of Historic Places. Many of them were built as summer homes as part of Sea Cliff's late nineteenth century role as a resort town, and they have been collectively called "one of the best collections of late Victorian era architecture in Nassau County."