Centerport is a hamlet and census-designated place (CDP) in Suffolk County, New York, United States, on the notably affluent North Shore of Long Island. Formerly known as Little Cow Harbor in about 1700, as Centreport in 1836, and as Centerport after 1895, the name refers to its geographic position midway between the east and west boundaries of the town of Huntington.As of the 2010 United States Census, the CDP population was 5,508.It is located in the town of Huntington. Huntington and its surrounding hamlets mark the east end of Long Island's renowned "Gold Coast", the name deriving from the traditional wealth and gentility associated with the area. The association dates back to the early twentieth century in which many affluent families built their homes along the north shore of the island. In Centerport, an example of this is the estate of William Kissam Vanderbilt II, otherwise known as Eagles Nest.