List of US Post Office Stores in Grenada, MS Outlet Note Regular Brands US Post Office Mississippi Grenada Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Grenada 68 S Main St (662) 227-1768 US Post Office outlet - Grenada 2500 Gateway St (662) 226-5515 US Post Office outlet - Grenada 20073 Highway 51 (662) 226-7252 People Also Viewed