About the town » Flanders, Suffolk County, New York, United States

Flanders is a hamlet and a census-designated place (CDP) in Suffolk County, New York, United States. The population was 4,472 at the 2010 census. It is the location of the Big Duck. It is located in the town of Southampton on the south side of the Peconic River at its mouth in Peconic Bay. Riverhead is across the river to the north.