| 100% | SON | 3 | Ending of eight U.S. presidents' names |
| 70% | BUREN | 5 | End of a three-word U.S. president name |
| 66% | VIRGINIA | 8 | Birthplace of eight U.S. presidents |
| 66% | PRESBYTERIANISM | 15 | Religious belief of eight U.S. presidents |
| 57% | VIRGINIA | 8 | Birth state of eight US presidents |
| 56% | OBAMA | 5 | Only U.S. president whose last name ends with an "A" |
| 56% | JAMES | 5 | First name of six U.S. presidents |
| 56% | ANDREW | 6 | First name of two U.S. presidents |
| 56% | GEORGE | 6 | First name of three U.S. presidents |
| 56% | HARRISON | 8 | Last name of two U.S. presidents |
| 55% | SIX | 3 | Number of U.S. presidents named James |
| 55% | BOONE | 5 | Name of eight counties in the central and eastern U.S. |
| 53% | BUREN | 5 | Part of a U.S. president's name that's Dutch for "neighbors" |
| 53% | NRA | 3 | Org. of which eight U.S. presidents have been members |
| 53% | KENNEDY | 7 | Last name of last U.S. President to die in office |
| 53% | ABE | 3 | Nickname for a former U.S. president or last name of a former Japanese prime minister |
| 50% | DWIGHT | 6 | First name of US president Eisenhower |
| 50% | JAMES | 5 | Most common first name of US presidents |
| 50% | ADAMS | 5 | Last name of two early US presidents |
| 49% | BARACK | 6 | ___ Obama, 44th U.S. President who has different species of animals, including a Cuban spider and sea slug, named after him |
| 49% | STATE | 5 | Only one bears the name of a U.S. president |
| 49% | BUSH | 4 | Last name of father-and-son US presidents |
| 49% | GAMALIEL | 8 | Middle name of US president Warren G Harding |
| 48% | NRA | 3 | Org. to which eight U.S. presidents have belonged |
| 48% | INC | 3 | Ending of a firm's name |
| 48% | EDU | 3 | End of a college president's address |
| 48% | MAN | 3 | End of many a superhero’s name |
| 48% | NET | 3 | End of some U.R.L.'s |
| 48% | COM | 3 | End of many U.R.L.'s |
| 48% | ALAI | 4 | End of a game's name |