According to our records, this business is located at P.O. BOX 9998 in Grantsburg (in Johnson County), Illinois 62943, the location GPS coordinates are: 37.3903703 (latitude), -88.7485548 (longitude). US Post Office is categorized under Post Offices (SIC code 4311). Known organization branch manager is Rita Barger. You can contact the company by phone at (618) 658-8570.