Inauguration: Ages of the presidents

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Teddy Roosevelt, shown in 1905, first took the office at 42 in 1901.
Teddy Roosevelt, shown in 1905, first took the office at 42 in 1901.
Image: Library of Congress.

At 70, Donald Trump will be the oldest person to be inaugurated president of the United States.

    Previously, Ronald Reagan, inaugurated at age 69, held that distinction. Below is a list of the presidents ranked by their ages—youngest to oldest—when they took office.
    If multiple presidents took office at the same age, the tie breaker is age in years plus days at the time they became president. For example, Barack Obama and Grover Cleveland both were inaugurated at 47. But Obama’s precise age was 47 years, 169 days, while Cleveland’s was 47 years, 351 days, making Obama the younger at inauguration.
    Another note about Cleveland, who served two nonconsecutive terms: He is in this ranking just once, using only his first-term age. The average age for new presidents is 55.

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

     Related:

     Presidents: Highest office before elected 

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