According to our records, this business is located at 304 E Main St. in Du Quoin (in Perry County), Illinois 62832, the location GPS coordinates are: 38.0114367 (latitude), -89.2360897 (longitude). US Post Office is categorized under Post Offices (SIC code 4311). Known organization manager is Vickie Brown. You can contact the company by phone at (618) 542-3933; the following fax number is also provided: (618) 542-2567. Business website can be accessed at www.usps.com.