| De-kalb Zip Code, Indiana - USA | |||
| ASHLEY | 46705 | 41.501455 | -85.071275 |
| AUBURN | 46706 | 41.377758 | -85.027689 |
| BUTLER | 46721 | 41.426441 | -84.912517 |
| CORUNNA | 46730 | 41.463082 | -85.137324 |
| GARRETT | 46738 | 41.323007 | -85.140707 |
| SAINT JOE | 46785 | 41.319754 | -84.888552 |
| SPENCERVILLE | 46788 | 41.302927 | -84.902416 |
| WATERLOO | 46793 | 41.461019 | -85.019562 |
Both Thomas Jefferson and John Adams passed away on July 4, 1826, 50 years after the Declaration of Independence was signed.