What is the constitutional age requirement for a us senator?
30 years old at the time of swearing the oath of office.
The Constitution, Section 3, states: "No Person shall be a Senator who shall not have attained to the Age of thirty Years, and been nine Years a Citizen of the United States, and who shall not, when elected, be an Inhabitant of that State for which he shall be chosen." See the link below for the text of the Constitution of the United States.
In the United States a person must be at least 35 to be President or Vice President, 30 to be a Senator, or 25 to be a Representative, as specified in the U.S. Constitution. Most states in the U.S. also have age requirements for the offices of Governor, State Senator, and State Representative. Some states have a minimum age requirement to hold any elected office (usually 21 or 18). Most states will not allow ballot…