Born in Abington, Massachusetts, Hobart pursued classical studies and graduated from Brown University in 1805.
Hobart was elected as a Democratic-Republican to the Sixteenth Congress to fill the vacancy caused by the resignation of Zabdiel Sampson.
He unsuccessfully ran as the Democratic Party nominee in the third vote of the 1853–54 Boston mayoral election.
Hobart died in East Bridgewater, Massachusetts, September 19, 1858, and was interred in Central Cemetery.
This article incorporates public domain material from the Biographical Directory of the United States Congress