Lenzburg 12 N Charles New Athens, IL 62264 Phone : (618) 475-3309 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Post Office - Lenzburg 312 N Charles St Lenzburg, IL 62255 Phone : (618) 475-3309 Business Category Post Offices Toll-Free           (800) ASK-USPS