U S Government--post Offices, Seward Seward, IL 61077 Phone : (815) 247-8777 Business Category Post Offices Government Offices & Public Schools United States Government--post Offices, Seward Freeport, IL 61032 Phone : (815) 247-8777 Business Category Post Offices Government Offices & Public Schools Post Office - Seward 3057 S Pecatonica Rd Seward, IL 61077 Phone : (815) 247-8777 Business Category Post Offices Toll-Free           (800) ASK-USPS