Who Is America's Oldest President
Joe Biden is the oldest person to serve as U.S. president. He was 78 when inaugurated in 2021 and turned 82 during his term. He surpassed Ronald Reagan, who left office at 77.
Age Records and Historical Context
Before Biden, Reagan was the oldest sitting president. The table below shows recent presidents' ages at inauguration. Source for presidential ages: The White House.
Why Age Matters for the Presidency
Age influences health, stamina, and term length. Voters often weigh experience against physical demands. The Constitution sets no age limit beyond the minimum of 35.
