| Mercer Zip Code, Kentucky - USA | |||
| BURGIN | 40310 | 37.754839 | -84.74994 |
| HARRODSBURG | 40330 | 37.803283 | -84.860707 |
| SALVISA | 40372 | 37.866351 | -84.884036 |
Both Thomas Jefferson and John Adams passed away on July 4, 1826, 50 years after the Declaration of Independence was signed.