

Census Bureau, the township had a total area of 26.60 square miles (68.89 km 2), including 21.93 square miles (56.79 km 2) of land and 4.67 square miles (12.09 km 2) of water (17.55%). The community is named for John Alexander "Black Jack" Logan, a Union Army general who was behind the establishment of Memorial Day as a national holiday. That name lasted just less than a year, as the name was changed to Logan Township as of March 6, 1878.

Logan Township was formed as West Woolwich Township by the New Jersey Legislature on March 7, 1877, from portions of Woolwich Township. As of the 2020 United States census, the township's population was 6,000, a decrease of 42 (−0.7%) from the 2010 census count of 6,042, which in turn reflected an increase of 10 (+0.2%) from the 6,032 counted in the 2000 census. Logan Township is a township in Gloucester County in the U.S.
