Hudson County

Bayonne city [1861: Township to 1869]
East Newark borough [1895]
Guttenberg town [1859]
Harrison town [1840: Township to 1869]
Hoboken city [1849: Township to 1855]
JERSEY CITY city [1820]- county courthouse
Kearny town [1867: Township to 1899]
North Bergen Township [1843]
Secaucus town [1900: borough to 1917]
Union City city [1925: created through merger of Union town (1864) and West Hoboken town (1861: Township to 1884)]
Weehawken Township [1859]
West New York town [1861: Union Township to 1898]

Source:  New Jersey Localities: Civil Divisions and Municipalities; http://www.thegreenpapers.com/slg/localities.phtml?state=NJ