U S Government--us Postal Service, For Zip Code Information Call, Unadilla Unadilla, GA 31091 Phone : (478) 627-3420 Business Category Government Offices-Federal Government Offices & Public Schools U S Government--us Postal Service, Unadilla Unadilla, GA 31091 Phone : (478) 627-3420 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Unadilla 1885 Pine St Unadilla, GA 31091 Phone : (478) 627-3420 Business Category Post Offices Toll-Free           (800) ASK-USPS