U S Government Offices--united States Postal Service, Processing & Distribution Facility, Clark 104 Hubbard St Clark, MO 65243 Phone : (573) 641-5704 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Clark 104 Hubbard St Clark, MO 65243 Phone : (573) 641-5704 Business Category Post Offices Toll-Free           (800) ASK-USPS Automated Postal Center - Clark 104 Hubbard St Clark, MO 65243 Phone : (573) 641-5704 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS