United States Government--post Office 406 3rd St Cushing, IA 51018 Phone : (712) 384-2403 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools United States Government--post Office, For Zip Code Information Cushing, IA 51018 Phone : (712) 384-2403 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Cushing 406 3rd St Cushing, IA 51018 Phone : (712) 384-2403 Business Category Post Offices Toll-Free           (800) ASK-USPS