East Setauket is a hamlet located in Suffolk County, New York, on Long Island. It is part of the Town of Brookhaven and is known for its suburban atmosphere, featuring residential neighborhoods, parks, and local businesses. The area is served by the Three Village Central School District, which includes several public schools. The hamlet has historical significance, with roots dating back to the 17th century. East Setauket is home to several landmarks, including the Setauket Village Green and the Emma S. Clark Memorial Library. The community is also near Stony Brook University, contributing to its vibrant local culture.