The average age of a United States President is approximately 56 years old. However, this figure can vary greatly depending on the individual. Some presidents have been relatively young when they were inaugurated, such as John F. Kennedy, who was 43 years old when he took office. Others, like Ronald Reagan, were much older, with Reagan being 77 years old when he left office in 1989.

In recent history, the trend has been for presidents to be older rather than younger. The past three presidents before Joe Biden – Donald Trump, Barack Obama, and George W. Bush – were all in their 50s or 60s when they were elected. Biden himself was 78 years old when he was inaugurated in January 2021, making him the oldest person to become President of the United States.

The age of a president can impact their policies and decision-making abilities. Some argue that older presidents may have more experience and wisdom, while others believe that younger presidents may be more in tune with current issues and able to connect with younger generations.

It’s also worth noting that the Constitution does not set a minimum or maximum age requirement for serving as President of the United States. However, the 22nd Amendment does impose a term limit of two terms or eight years, which can impact the age range of presidents.

Overall, the average age of a United States President is around 56 years old, but this can vary greatly depending on the individual. While age can impact a president’s policies and decision-making abilities, it’s just one of many factors to consider when evaluating a presidential candidate.

Here is a list of all United States Presidents in order of age when taking office:

  1. Donald Trump – 70 years old
  2. Ronald Reagan – 69 years old
  3. William Henry Harrison – 68 years old
  4. James Buchanan – 65 years old
  5. George H. W. Bush – 64 years old
  6. Zachary Taylor – 64 years old
  7. Dwight D. Eisenhower – 62 years old
  8. Joe Biden – 78 years old
  9. Gerald Ford – 61 years old
  10. Harry S. Truman – 60 years old
  11. Andrew Johnson – 56 years old
  12. Ulysses S. Grant – 46 years old
  13. James A. Garfield – 49 years old
  14. Grover Cleveland – 47 years old
  15. Benjamin Harrison – 55 years old
  16. Warren G. Harding – 55 years old
  17. John F. Kennedy – 43 years old
  18. Lyndon B. Johnson – 55 years old
  19. Richard Nixon – 56 years old
  20. Jimmy Carter – 52 years old
  21. George W. Bush – 54 years old
  22. Barack Obama – 47 years old
  23. Franklin D. Roosevelt – 51 years old
  24. William McKinley – 54 years old
  25. Theodore Roosevelt – 42 years old
  26. Chester A. Arthur – 51 years old
  27. Rutherford B. Hayes – 54 years old
  28. William Howard Taft – 51 years old
  29. Woodrow Wilson – 56 years old
  30. Calvin Coolidge – 51 years old
  31. Herbert Hoover – 54 years old
  32. Franklin Pierce – 48 years old
  33. Millard Fillmore – 50 years old
  34. James K. Polk – 49 years old
  35. Martin Van Buren – 54 years old
  36. John Tyler – 51 years old
  37. Thomas Jefferson – 57 years old
  38. James Madison – 57 years old
  39. James Monroe – 58 years old
  40. John Adams – 61 years old
  41. George Washington – 57 years old

Here is a list of all United States Presidents in order of age when leaving office:

  1. Ronald Reagan – 77 years old
  2. Donald Trump – 74 years old
  3. Dwight D. Eisenhower – 70 years old
  4. George H. W. Bush – 68 years old
  5. William Henry Harrison – 68 years old (died in office)
  6. James Buchanan – 69 years old
  7. Zachary Taylor – 65 years old (died in office)
  8. Harry S. Truman – 68 years old
  9. Gerald Ford – 63 years old
  10. Richard Nixon – 61 years old
  11. Lyndon B. Johnson – 64 years old
  12. John F. Kennedy – 46 years old (assassinated)
  13. Calvin Coolidge – 60 years old
  14. James K. Polk – 53 years old
  15. John Quincy Adams – 63 years old
  16. Martin Van Buren – 54 years old
  17. Rutherford B. Hayes – 54 years old
  18. Herbert Hoover – 58 years old
  19. William Howard Taft – 55 years old
  20. Benjamin Harrison – 56 years old
  21. Grover Cleveland – 55 years old (non-consecutive terms)
  22. Woodrow Wilson – 67 years old
  23. Franklin Pierce – 53 years old
  24. Chester A. Arthur – 51 years old
  25. Andrew Jackson – 67 years old
  26. James A. Garfield – 49 years old (assassinated)
  27. Warren G. Harding – 57 years old (died in office)
  28. Franklin D. Roosevelt – 63 years old (died in office)
  29. Thomas Jefferson – 65 years old
  30. James Madison – 65 years old
  31. James Monroe – 58 years old
  32. John Adams – 90 years old
  33. George Washington – 65 years old