Post Offices List in Gallatin County, Illinois:
| Equality Post Office | 205 W Lane St, Equality, IL 62934 |
| Junction Post Office | 348 Front St, Junction, IL 62954 |
| New Haven Post Office | 526 Vine St, New Haven, IL 62867 |
| Omaha Post Office | 430 2nd St, Omaha, IL 62871 |
| Ridgway Post Office | 116 S Murphy St, Ridgway, IL 62979 |
| Shawneetown Post Office | 200 N Lincoln Blvd E, Shawneetown, IL 62984 |