Post Offices List in Poinsett County, Arkansas:
| Fisher Post Office | 103 E Main St, Fisher, AR 72429 |
| Harrisburg Post Office | 705 W Jackson St, Harrisburg, AR 72432 |
| Lepanto Post Office | 125 Holmes St, Lepanto, AR 72354 |
| Marked Tree Post Office | 402 Frisco St, Marked Tree, AR 72365 |
| Trumann Post Office | 301 Highway 463 S, Trumann, AR 72472 |
| Tyronza Post Office | 329 S Main St, Tyronza, AR 72386 |
| Waldenburg Post Office | 5953 Highway 14 E, Waldenburg, AR 72475 |
| Weiner Post Office | 117 W Second St, Weiner, AR 72479 |