1 – George Washington, 1789-1797

2 – John Adams, 1797-1801

3 – Thomas Jefferson, 1801 – 1809

4 – James Madison, 1809 – 1817

5 – James Monroe, 1817 – 1825

6 – John Adams, 1825 – 1829

7 – Andrew Jackson, 1829 – 1837

8 – Martin Van Buren, 1837 – 1841

9 – William Henry Harrison, 1841

10 – John Tyler, 1841 – 1845

11 – James Polk, 1845 – 1849

12 – Zachary Taylor, 1849 – 1850

13 – Millard Fillmore, 1850 – 1853

14 – Franklin Pierce, 1853 – 1857

15 – James Buchanan, 1857 – 1861

16 – Abraham Lincoln, 1861 – 1865

17 – Andrew Johnson, 1865 – 1869

18 – Ulysses S. Grant, 1869 – 1877

19 – Rutherford B. Hayes, 1877 – 1881

20 – James Garfield, 1881

21 – Chester Arthur, 1881 – 1885

22 – Grover Cleveland, 1885 – 1889

23 – Benjamin Harrison, 1889 – 1893

24 – Grover Cleveland, 1893 – 1897

25 – William Mc Kinley, 1897 – 1901

26 – Theodore Roosvelt, 1901 – 1909

27 – William H. Taft, 1909 – 1913

28 – Woodrow Wilson, 1913 – 1921

29 – Warren Harding, 1921 – 1923

30 – Calvin Coolidge, 1923 – 1929

31 – Herbert Hoover, 1929 – 1933

32 – Franklin Delano Roosvelt, 1933 – 1945

33 – Harry Truman, 1945 – 1953

34 – Dwight Eisenhower, 1953 – 1961

35 – John F. Kennedy, 1961 – 1963

36 – Lyndon Johnson, 1963 – 1969

37 – Richard Nixon, 1969 – 1974

38 – Gerald Ford, 1974 – 1977

39 – Jimmy Carter, 1977 – 1981

40 – Ronald Reagan, 1981 – 1989

41 – George H.W. Bush, 1989 – 1993

42 – William J. Clinton, 1993 – 2001

43 – George W. Bush, 2001 – 2009

44 – Barack H. Obama, 2009 – 2017

45 – Donald J. Trump, 2017 – 2021

46 – Joseph R. Biden, 2021 – in carica