Post Offices in & near Langor, Minnesota. Operating hours, locations, phone/fax number, services information.
Post Office in Blackduck, Minnesota on 1st St SE. Operating hours, phone number, services information, and other locations.
Address: 57 1st St SE, Blackduck, MN 56630
Phone: 218-835-4946
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457