Southern Illinois University Carbondale
Campus Mail Code Look-Up
| Mail Stop Name | Mail Code |
| WIDB | 4428 |
| Wall and Grand Apt. Complex | 6707 |
| Warren Hall | 6617 |
| Wellness Center | 6740 |
| Wesley Foundation | 4328 |
| Women's Studies | 6518 |
| Workforce Education & Development | 4605 |
| Workforce Education-Military Degree Programs | 4603 |