According to our records, this business is located at 1624 Main St. in Alton (in Madison County), Illinois 62002, the location GPS coordinates are: 38.9020888 (latitude), -90.1480313 (longitude). US Post Office is categorized under Post Offices (SIC code 4311). Known organization branch manager is Mark Orlando. You can contact the company by phone at (618) 462-6014.