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(/ROHZ-lin/) is a village in Nassau County, New York on the North Shore of Long Island. As of the United States 2000 Census, the village population was 2,570. Roslyn was once called Hempstead Harbor, but its named changed to Roslyn on September 7, 1844 due to postal confusion regarding all the other "Hempsteads" in Long Island and their distance from each other.
Roslyn is located at (40.800100, -73.650573).
According to the United States Census Bureau, the village has a total area of 0.6 square miles (1.7 km²), of which, 0.6 square miles (1.6 km²) of it is land and 1.56% is water.