Thomas Sinnickson served as a Representative from New Jersey in the United States Congress from 1789 to 1799. A member of the Federalist Party, Thomas Sinnickson contributed to the legislative process during 2 terms in office.

Thomas Sinnickson’s service in Congress occurred during a significant period in American history. As a member of the House of Representatives, Thomas Sinnickson participated in the democratic process and represented the interests of constituents, helping to shape the laws and policies that governed the nation.