Current U.S. Senators for the state of Iowa:
Iowa was admitted to the Union on December 28, 1846 and elects United States senators to Class 2 and Class 3. The state's current U.S. senators are Republicans Chuck Grassley (serving since 1981) and Joni Ernst (serving since 2015).
Source: Wikipedia
https://en.wikipedia.org/wiki/ListofUnitedStatessenatorsfromIowa