United States Government--post Offices, Cedarville Freeport, IL 61032 Phone : (815) 563-4364 Business Category Post Offices Government Offices & Public Schools Post Office - Cedarville 125 W Washington St Cedarville, IL 61013 Phone : (815) 563-4364 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (815) 563-9038