Post Offices in & near Grayslake, Illinois. Operating hours, locations, phone/fax number, services information.
Post Office in Grayslake, Illinois on Commerce Dr. Operating hours, phone number, services information, and other locations.
Address: 75 Commerce Dr, Grayslake, IL 60030
Phone: 847-223-2787
Fax: 847-223-0571
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
