The oldest person ever to serve as president of the United States is Joe Biden, who reached age 82 while still in office, making him the oldest serving U.S. president in history.

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Who Was the Oldest President?

If you’re wondering who was the oldest president in U.S. history, the answer is Joe Biden. He became the oldest person to serve as president as his age passed 81 and then 82 during his time in office.

Key facts at a glance

  • Oldest serving U.S. president: Joe Biden.
  • Age while in office: Reached 81 and then 82 years old as president.
  • Earlier record-holders included Ronald Reagan, who left office at 77, and Donald Trump, who also served in his 70s.

In simple terms: among all U.S. presidents, Joe Biden stands as the oldest to hold the office while serving as president.

TL;DR: Joe Biden holds the record as the oldest president in U.S. history, reaching 82 years old while in office.

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