thumb|upright=1.2|1862 map of Cumberland County Greenwich Township () is the westernmost township in Cumberland County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 771, a decrease of 33 (−4.1%) from the 2010 census count of 804, which in turn reflected a decline of 43 (−5.1%) from the 847 counted in the 2000 census.Table 7. Population for the Counties and Municipalities in New Jersey: 1990, 2000 and 2010, New Jersey Department of Labor and Workforce Development, February 2011. Accessed May 1, 2023. It is part of the Vineland-Bridgeton metropolitan statistical area, which encompasses those cities and all of Cumberland County for statistical purposes and which constitutes a part of the Delaware Valley.New Jersey: 2020 Core Based Statistical Areas and Counties, United States Census Bureau. Accessed December 22, 2022.
thumb|upright=1.2|1862 map of Cumberland County Greenwich Township () is the westernmost township in Cumberland County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 771, a decrease of 33 (−4.1%) from the 2010 census count of 804, which in turn reflected a decline of 43 (−5.1%) from the 847 counted in the 2000 census.Table 7. Population for the Counties and Municipalities in New Jersey: 1990 2000 and 2010, New Jersey Department of Labor and Workforce Development, February 2011. Accessed May 1, 2023. It is part of the Vineland-Bridgeton metropolitan statistical area, which encompasses those cities and all of Cumberland County for statistical purposes and which constitutes a part of the Delaware Valley.New Jersey: 2020 Core Based Statistical Areas and Counties, United States Census Bureau. Accessed December 22, 2022.