Post Office - Mount Liberty 7088 Columbus Rd Mount Liberty, OH 43048 Phone : (740) 625-5789 Post Office - Mount Liberty Business Category Post Offices Toll-Free           (800) ASK-USPS U S Offices--post Offices, Mt Liberty 7088 Columbus Rd Centerburg, OH 43011 Phone : (740) 625-5789 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools