Post Offices in & near Upper Marlboro, Maryland. Operating hours, locations, phone/fax number, services information.
Post Office in Upper Marlboro, Maryland on Elm St. Operating hours, phone number, services information, and other locations.
Address: 14605 Elm St, Upper Marlboro, MD 20772
Phone: 301-780-3427
Fax: 301-627-0021
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
