Graduated from Yale, 1785.
Dickinson moved to Troy, New York, and served as president of the Farmers" Bank of Troy, New York, from the bank"s foundation in 1801 until his death in 1841. Dickinson was elected as a Federalist to the Sixteenth and Seventeenth Congresses from March 4, 1819 to March 3, 1823. He was one of the original trustees of the Rensselaer Polytechnic Institute in 1824.
Dickinson was elected as an Adams candidate to the Twentieth Congress from March 4, 1819 to March 3, 1823.
He was reelected as an Anti-Jacksonian to the Twenty-first Congress from March 4, 1827 to March 3, 1831. After serving in Congress, Dickinson resumed the practice of law in Troy, New York, and died in Troy on January 28, 1841.
He is interred at Oakwood Cemetery.
He served as member of the New York State Assembly from November 1816 to April 1817, and was the first president of the Troy Lyceum of Natural History in 1818. He served as a member of the committee which received Lafayette on his visits to Troy in 1824 and 1825.