on the east, the Hackensack River to the west, south to Constable Hook and north to the present-day southern border of Bergen County. Secession and dissolution During its 200-year history the township was diminished in size through various secessions until it finally dissolved. On January 28, 1820, Jersey City was formed within Bergen Township, and in 1838, was reincorporated as a city independent of Bergen Township. On February 22, 1840, the New Jersey Legislature created Hudson County from southern portions of Bergen County. The new county included the entirety of the original Bergen Township (including Jersey City) and the portions of Lodi Township south of today's Paterson Plank Road, an area known as New Barbadoes Neck. Portions of the township were taken to form Van Vorst Township (April 12, 1841, annexed by Jersey City on March 18, 1851), North Bergen Township (April 10, 1843), Bergen town (March 24, 1855, ultimately annexed by Jersey City on May 2, 1870) and Bayonne Township (April 1, 1861). The remaining portions of the township were absorbed by Bergen town, in a sort of reverse takeover, and the township was dissolved on March 11, 1862. North Bergen was incorporated as a township on April 10, 1843, by an act of the New Jersey Legislature, from Bergen Township. Portions of the township have been taken to form Hoboken Township (April 9, 1849, now the city of Hoboken), Hudson Town (April 12, 1852, later part of Hudson City), Hudson City (April 11, 1855, later annexed by Jersey City), Guttenberg (formed within the township on March 9, 1859, and set off as an independent municipality on April 1, 1878), Weehawken (March 15, 1859), Union Township and West Hoboken Township (both created on February 28, 1861), Union Hill (March 29, 1864) and Secaucus (March 12, 1900). See also Acquackanonk Township Elizabeth Township Township Act of 1798 References Sources "History of Bergen County, New Jersey, 1630–1923;" by "Westervelt, Frances A. (Frances Augusta), 1858–1942." "Municipal Incorporations of the State of New Jersey (according to Counties)" prepared by the Division of Local Government, Department of the Treasury (New Jersey); December 1, 1958. Further reading External links Bergen Township, NJ from Historical Collections of the State of New Jersey: 1844 Bergen County Townships and Municipalities Dutch Door Genealogy: Bergen County New Jersey Municipalities Former townships in Bergen County, New Jersey Former municipalities in Hudson County, New Jersey History of Jersey City, New Jersey