| Gilpin Zip Code, Colorado - USA | |||
| BLACK HAWK | 80422 | 39.81599 | -105.475322 |
| CENTRAL CITY | 80427 | 39.821626 | -105.545631 |
| ROLLINSVILLE | 80474 | 39.883804 | -105.5482 |
Both Thomas Jefferson and John Adams passed away on July 4, 1826, 50 years after the Declaration of Independence was signed.