United States Government--post Offices, Ellis 110 E Main St Ellisville, IL 61431 Phone : (309) 293-4682 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Ellisville 100 E Main St Ellisville, IL 61431 Phone : (309) 293-4682 Post Office - Ellisville Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (309) 293-4682