Post Offices List in Sargent County, North Dakota:
| Cogswell Post Office | 299 4th Ave, Cogswell, ND 58017 |
| Forman Post Office | 333 Main St S, Forman, ND 58032 |
| Gwinner Post Office | 21 S Main St, Gwinner, ND 58040 |
| Havana Post Office | 112 Sargent Ave W, Havana, ND 58043 |
| Milnor Post Office | 420 Main St, Milnor, ND 58060 |
| Rutland Post Office | 113 1st St, Rutland, ND 58067 |