Usps Potomac Post Office

Post office

10221 River Road, Potomac, MD 20854

(301) 983-4671

By Appointment Only. Monday - Friday 10:30am - 4:00pm; Saturday 10:30am-12:00pm

Appointment required

Hours and addresses come from the State Department listing, updated November 2, 2026.

Book at USPS Directions Facilities in Potomac Facilities in Maryland

Usps Potomac Post Office accepts new U.S. passport applications in person in Potomac, MD. First-time and child visits are booked on the USPS scheduler. Search ZIP 20854. How to apply · How to renew