Piscataway () is a township in Middlesex County, New Jersey, United States. It is a suburb of the New York metropolitan area, in the Raritan Valley. At the 2010 United States Census, the population was 56,044, an increase of 5,562 (+11.0%) from 50,482 at the 2000 Census, which had in turn increased by 3,393 (+7.2%) from 47,089 in 1990.The name may be derived from the area's earliest European settlers who came from near the Piscataqua River, a landmark defining the coastal border between New Hampshire and Maine, whose name derives from peske (branch) and tegwe (tidal river), or alternatively from pisgeu (meaning "dark night") and awa ("place of") or from a Lenape language word meaning "great deer". The area was appropriated in 1666 by Quakers and Baptists who had left the Puritan colony in New Hampshire.Piscataway Township was formed on December 18, 1666, and officially incorporated by an act of the New Jersey Legislature on February 21, 1798, as part of the state's initial group of...