Sheldon--post Office, Zip Code Information Sheldon, IA 51201 Phone : (712) 324-4618 Business Category Government Offices-Federal Government Offices-City Village & Twp Post Offices Government Offices State & Local Government Offices & Public Schools Post Office - Matlock 515 Main St Matlock, IA 51244 Phone : (712) 324-4618 Business Category Post Offices Toll-Free           (800) ASK-USPS Post Office - Sheldon 312 11th St Sheldon, IA 51201 Phone : (712) 324-4618 Business Category Government Offices-Federal Government Offices-City Village & Twp Post Offices Government Offices State & Local Government Offices & Public Schools Toll-Free           (800) ASK-USPS Sheldon--united States Government, Post Office 312 11th St Sheldon, IA 51201 Phone : (712) 324-4618 Sheldon--united States Government, Post Office Business Category Government Offices-Federal Post Offices Government Offices & Public Schools United States Government--post Office, For Zip Code Information Sheldon, IA 51201 Phone : (712) 324-4618 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools