Green Township is a township in Sussex County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 3,627,
History
On November 20, 1824, the southern portion of Sussex County was set off to create Warren County. The northern portions of both Hardwick and Independence townships, remained in Sussex County and were incorporated as Green Township by an act of the New Jersey Legislature on December 27, 1824.
In 1829, part of Green Township were transferred to Byram Township, and in 1853 Green Township was expanded to include a section of the old Newtown Township. On February 24, 1904, Fredon Township was incorporated from a portion of the township. Many sections of Green retain their own unique identity, such as Tranquility, Huntsville, Greendell and Yellow Frame.
Tranquility was originally known as Kennedytown, named for Amos Kennedy who settled here. When the location for the Tranquility Methodist Church was being chosen, a disagreement arose over erecting it in Allamuchy Township or Kennedytown. A compromise was affected, with the church being erected halfway between the two points. To memorialize the agreement, the church was named Tranquility. Later, Kennedytown took the church's name as its own.thumb|300px|right|The westbound [[Lackawanna Limited coming off the Pequest Fill on the Lackawanna Cut-off in Tranquility, about east of the station in Greendell. This 1912 photo was the basis for a Phoebe Snow poster advertising how the Cut-Off cut off from the trip to Buffalo, New York. The so-called "borrow pits" that provided fill for the Pequest Fill can be seen to the right. The original Tranquility schoolhouse stood not far from this location, but was torn down to make way for the Pequest Fill. The Lackawanna Railroad paid for a new schoolhouse.]]
In 1911, the Lackawanna Cut-off rail line opened through Green Township, with a stop at Greendell station. The Cut-Off was part of the Delaware, Lackawanna and Western Railroad's mainline from Hoboken to Buffalo. The line was abandoned in 1980 and the tracks were removed four years later. New Jersey Transit is considering reactivating passenger service on the line extending to Scranton, Pennsylvania, with a proposed maintenance-of-way facility at Greendell that would incorporate the surviving station building.
In August 2006, a documentary titled The History of Green Township was produced by Kelsey Falkowski. The video includes historical landmarks, interviews with lifelong citizens of Green Township, and leads up to the contemporary view of the township. Copies can be obtained through the Green Township Historical Society.
Geography
According to the United States Census Bureau, Green township had a total area of 16.30 square miles (42.21 km<sup>2</sup>), including 16.03 square miles (41.53 km<sup>2</sup>) of land and 0.27 square miles (0.69 km<sup>2</sup>) of water (1.63%).
Green Township borders the municipalities of Andover Borough, Andover Township, Byram Township and Fredon Township in Sussex County; and Allamuchy Township and Frelinghuysen Township in Warren County.