United States Government--labor Department Of, Postal Service, Crystal Crystal, ND 58222 Phone : (701) 657-2351 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Crystal 332 3rd St Crystal, ND 58222 Phone : (701) 657-2351 Post Office - Crystal Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (605) 357-4906