| Washington Zip Code, Kansas - USA | |||
| BARNES | 66933 | 39.681367 | -96.862609 |
| CLIFTON | 66937 | 39.655509 | -97.17341 |
| GREENLEAF | 66943 | 39.687997 | -96.975097 |
| HADDAM | 66944 | 39.83551 | -97.269445 |
| HANOVER | 66945 | 39.867079 | -96.896534 |
| HOLLENBERG | 66946 | 39.841523 | -96.966275 |
| LINN | 66953 | 39.784861 | -97.168514 |
| MAHASKA | 66955 | 39.841669 | -97.22614 |
| MORROWVILLE | 66958 | 39.885808 | -97.172061 |
| PALMER | 66962 | 39.610229 | -97.12993 |
| WASHINGTON | 66968 | 39.781107 | -97.054286 |
Both Thomas Jefferson and John Adams passed away on July 4, 1826, 50 years after the Declaration of Independence was signed.