| ZIP | County | State | Area Code | Time Zone |
| 46601 | St Joseph | IN | 574 | EST |
| 46613 | St Joseph | IN | 574 | EST |
| 46614 | St Joseph | IN | 574 | EST |
| 46615 | St Joseph | IN | 574 | EST |
| 46616 | St Joseph | IN | 574 | EST |
| 46617 | St Joseph | IN | 574 | EST |
| 46619 | St Joseph | IN | 574 | EST |
| 46624 | St Joseph | IN | 574 | EST |
| 46626 | St Joseph | IN | 574 | EST |
| 46628 | St Joseph | IN | 574 | EST |
| 46634 | St Joseph | IN | 574 | EST |
| 46635 | St Joseph | IN | 574 | EST |
| 46637 | St Joseph | IN | 574 | EST |
| 46660 | St Joseph | IN | 574 | EST |
| 46680 | St Joseph | IN | 574 | EST |
| 46699 | St Joseph | IN | 574 | EST |