<P> Trenton dates back at least to June 3 , 1719 , when mention was made of a constable being appointed for Trenton , while the area was still part of Hunterdon County . Boundaries were recorded for Trenton Township as of March 2 , 1720 , a courthouse and jail were constructed in Trenton around 1720 and the Freeholders of Hunterdon County met annually in Trenton . Trenton became New Jersey 's capital as of November 25 , 1790 , and the City of Trenton was formed within Trenton Township on November 13 , 1792 . Trenton Township was incorporated as one of New Jersey 's initial group of 104 townships by an act of the New Jersey Legislature on February 21 , 1798 . On February 22 , 1834 , portions of Trenton Township were taken to form Ewing Township . The remaining portion of Trenton Township was absorbed by the City of Trenton on April 10 , 1837 . A series of annexations took place over a 50 - year period , with the city absorbing South Trenton borough ( April 14 , 1851 ) , portions of Nottingham Township ( April 14 , 1856 ) , both the Borough of Chambersburg Township and Millham Township ( both on March 30 , 1888 ) , as well as Wilbur Borough ( February 28 , 1898 ) . Portions of Ewing Township and Hamilton Township were annexed to Trenton on March 23 , 1900 . </P>
<P> Trenton dates back at least to June 3 , 1719 , when mention was made of a constable being appointed for Trenton , while the area was still part of Hunterdon County . Boundaries were recorded for Trenton Township as of March 2 , 1720 , a courthouse and jail were constructed in Trenton around 1720 and the Freeholders of Hunterdon County met annually in Trenton . Trenton became New Jersey 's capital as of November 25 , 1790 , and the City of Trenton was formed within Trenton Township on November 13 , 1792 . Trenton Township was incorporated as one of New Jersey 's initial group of 104 townships by an act of the New Jersey Legislature on February 21 , 1798 . On February 22 , 1834 , portions of Trenton Township were taken to form Ewing Township . The remaining portion of Trenton Township was absorbed by the City of Trenton on April 10 , 1837 . A series of annexations took place over a 50 - year period , with the city absorbing South Trenton borough ( April 14 , 1851 ) , portions of Nottingham Township ( April 14 , 1856 ) , both the Borough of Chambersburg Township and Millham Township ( both on March 30 , 1888 ) , as well as Wilbur Borough ( February 28 , 1898 ) . Portions of Ewing Township and Hamilton Township were annexed to Trenton on March 23 , 1900 . </P>
when did trenton become the capital of new jersey
when did trenton become the capital of new jersey
November 25 , 1790
November 25 , 1790