United States Government--labor Department Of, Postal Service, Petersburg Petersburg, ND 58272 Phone : (701) 345-8584 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--petersburg Petersburg, ND 58272 Phone : (701) 345-8584 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Petersburg 214 5th St Petersburg, ND 58272 Phone : (701) 345-8584 Post Office - Petersburg Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (605) 357-4906