Post Offices List in Lawrence County, Illinois:
| Bridgeport Post Office | 250 E Olive St, Bridgeport, IL 62417 |
| Lawrenceville Post Office | 1014 Jefferson St, Lawrenceville, IL 62439 |
| Saint Francisville Post Office | 803 Main St, Saint Francisville, IL 62460 |
| Sumner Post Office | 120 W South Ave, Sumner, IL 62466 |