Post Offices in & near Humboldt, South Dakota. Operating hours, locations, phone/fax number, services information.
Post Office in Humboldt, South Dakota on W 2nd Ave. Operating hours, phone number, services information, and other locations.
Address: 1005 W 2nd Ave, Humboldt, SD 57035
Phone: 605-363-3018
Fax: 605-357-4906
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
