Wyoming was admitted to the Union on July 10, 1890, and elects United States senators to class 1 and class 2.
Its current U.S. senators are Republicans John Barrasso (serving since 2007) and Cynthia Lummis (serving since 2021).
21 people have served as a United States senator from Wyoming.
Francis E. Warren was Wyoming's longest serving senator (served 1890–1893; 1895–1929).