United States Government--postal Service, Post Office, Larimore, Zip Code Information Larimore, ND 58251 Phone : (701) 343-2941 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Larimore 208 E Front St Larimore, ND 58251 Phone : (701) 343-2941 Post Office - Larimore Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Toll-Free           (800) ASK-USPS Fax           (605) 357-4906