Post Offices List in Obion County, Tennessee:
| Hornbeak Post Office | 207 S Main St, Hornbeak, TN 38232 |
| Obion Post Office | 220 E Palestine Ave, Obion, TN 38240 |
| Rives Post Office | 498 S Front St, Rives, TN 38253 |
| Samburg Post Office | 5466 W Highway 22 S, Samburg, TN 38254 |
| Troy Post Office | 214 W Harper St, Troy, TN 38260 |
| Union City Post Office | 114 W Washington Ave, Union City, TN 38261 |
| Woodland Mills Post Office | 179 N Thompson St, Woodland Mills, TN 38271 |