Southern Illinois University Carbondale
Campus Mail Code Look-Up
| Mail Stop Name | Mail Code |
| Radio-Television | 6609 |
| Rainbow's End Preschool | 6735 |
| Region V RCEP | 6703 |
| Rehab Counseling | 4609 |
| Rehabilitation Continuing Education Program | 6703 |
| Rehabilitation Institute | 4609 |
| Research & Project Fiscal Management | 6812 |
| Research Development & Admin., Office of | 4709 |
| Residence Hall Dining | 6722 |
| Residence Life Office | 6725 |
| Risk Management | 6829 |