How old must a person be to be elected President of the United States?

To be elected President of the United States, an individual must be at least 35 years old. This age requirement is outlined in Article II, Section 1 of the U.S. Constitution. The framers established this criterion to ensure that candidates for the presidency possess a level of maturity and experience deemed necessary for such a significant leadership role. This age requirement reflects a balance between youthful vigor and the wisdom that often accompanies age, aiming to ensure that a president has had enough life experience to handle the complexities of the office.