Southern Illinois University Carbondale
Campus Mail Code Look-Up
| Building Name | Postal Code |
| Facilities Operation Center (FOC) | 6738 |
| Faculty Senate | 4712 |
| Family Practice Center | 6815 |
| Fashion and Design, Office of | 4318 |
| Felts Hall | 6617 |
| Finance | 4626 |
| Financial Aid Office | 4702 |
| Fisheries and Illinois Aquaculture Center | 6511 |
| Flight Services | 6817 |
| Food & Nutrition | 4317 |
| Foreign Languages & Literatures | 4521 |
| Forensics | 6605 |
| Forestry | 4411 |
| Foundation | 6805 |
| Foundation Advancement Series | 6836 |
| Foundation Central Development | 6807 |
| Foundation-Chicago Office | 6805 |
| Fulkerson Hall | 6814 |