Greenwich Township is a township in Gloucester County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 4,917,
Greenwich Township was first formed on March 1, 1695, and was formally incorporated as one of New Jersey's initial group of 104 townships by an act of the New Jersey Legislature on February 21, 1798. Over the centuries, portions of the township were taken to form Woolwich Township (March 7, 1767), Franklin Township (January 27, 1820), Spicer Township (March 13, 1844; now Harrison Township), Mantua Township (February 23, 1853), East Greenwich Township (February 10, 1881), and Paulsboro (March 2, 1904). The township was named for Greenwich, England.
History
C. A. Nothnagle Log House in Greenwich Township is one of the oldest standing wooden structures built by European settlers in the Eastern United States. It was likely built by early Finnish-Swedish settlers after 1638 but before 1700; its precise age has not been definitively determined. A plaque at the house indicates that the structure was built between 1638 and 1643, while the National Register of Historic Places web site states: "Period of Significance: 1650–1699". The one-room cabin is constructed of square-hewn logs with a low-beamed ceiling with a large corner fireplace in a rear corner.
Geography
According to the U.S. Census Bureau, the township had a total area of 12.03 square miles (31.16 km<sup>2</sup>), including 8.96 square miles (23.21 km<sup>2</sup>) of land and 3.07 square miles (7.95 km<sup>2</sup>) of water (25.50%). Other unincorporated communities, localities, and places located partially or completely in the township are Clements, Green, Monds Island, and Thompsons Point.
The township borders East Greenwich Township, Logan Township, and Paulsboro in Gloucester County. Greenwich Township also borders the Delaware River.