Setauket-East Setauket /s??t??k?t/, more commonly known as the Setaukets (or that region's core), is a census-designated place (CDP) in Suffolk County, New York, on the North Shore of Long Island. As of the 2010 United States Census, the CDP population was 15,477.
The name Setauket is derived from the historic Algonquian-speaking Setalcott Indians, who had lived in the area prior to its colonial period. In 1655, a handful of land-speculating colonists orchestrated the purchase of the Setauket area from the local natives. The region's first European settlers were English migrants from New England and further east on Long Island, who arrived shortly thereafter. This was the first settlement in what later became the Town of Brookhaven, and both the hamlet and town use the 1655 date as their origin. During the 17th century, Setauket was synonymous with the colonial town of Brookhaven.