Aaron Burr . He was the third Vice President of the United States ( 1801 -- 1805 ) , serving during Thomas Jefferson 's first term . He was elected twice to the New York State Assembly ( 1784 -- 1785 , 1798 -- 1799 ) , was appointed New York State Attorney General ( 1789 -- 1791 ) , was chosen as a U.S. senator ( 1791 -- 1797 ) , from the State of New York , and reached the apex of his career as vice president . In 1804 , the last full year of his single term as vice president , Burr killed his political rival Alexander Hamilton in a famous duel .
Aaron Burr's final year of vice presidency was 1804.