Post Offices in & near Grass Valley, California. Operating hours, locations, phone/fax number, services information.
Post Office in Grass Valley, California on E Main St. Operating hours, phone number, services information, and other locations.
Address: 185 E Main St, Grass Valley, CA 95945
Phone: 530-273-3429
Fax: 916-273-9572
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
