United States Government--postal Service, Harwood Nd West Fargo, ND 58078 Phone : (701) 282-4800 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Harwood 521 Dakota Ave Harwood, ND 58042 Phone : (701) 282-4800 Post Office - Harwood Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (605) 357-4906