| Business | Phone |
| Us Post Office 2500 Gateway St, Grenada 38901 | (662) 226-7252 |
| Us Post Office 68 Main St, Grenada 38901 | (662) 227-1768 |
| Us Post Office 80 Koppers Dr, Grenada 38901 | (662) 229-9841 |
| Us Post Office 945 Highway 51 S, Grenada 38901 | (662) 227-8421 |