| 42nd United States Congress | |
|---|---|
41st ← → 43rd | |
 United States Capitol (1877) | |
March 4, 1871 – March 4, 1873 | |
| Members | 74 senators 243 representatives 10 non-voting delegates |
| Senate majority | Republican |
| Senate President | Schuyler Colfax (R) |
| House majority | Republican |
| House Speaker | James G. Blaine (R) |
| Sessions | |
| 1st: March 4, 1871 – April 20, 1871 2nd: December 4, 1871 – June 10, 1872 3rd: December 2, 1872 – March 4, 1873 | |
The 42nd United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1871, to March 4, 1873, during the third and fourth years of Ulysses S. Grant's presidency. The apportionment of seats in the House of Representatives was based on the 1860 United States census. Both chambers had a Republican majority.