Post Offices in & near Humboldt, Illinois. Operating hours, locations, phone/fax number, services information.
Post Office in Humboldt, Illinois on Elm St. Operating hours, phone number, services information, and other locations.
Address: 407 Elm St, Humboldt, IL 61931
Phone: 217-856-2266
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
