Post Offices
Post Offices in & near Congress Heights, Washington, D.C.. Operating hours, locations, phone/fax number, services information.
Naval Research Laboratory Post Office
Naval Research Laboratory Post Office in Washington, District of Columbia on Overlook Ave SW. Operating hours, phone number, services information, and other locations.
Address: 4555 Overlook Ave SW, Washington, DC 20375
Phone: 202-636-1200
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday ClosedTuesday 9:00am - 1:00pm
Wednesday 9:00am - 1:00pm
Thursday 9:00am - 1:00pm
Friday 9:00am - 1:00pm
Saturday Closed
Sunday Closed
Lobby Hours
Monday ClosedTuesday 9:00am - 1:00pm
Wednesday 9:00am - 1:00pm
Thursday 9:00am - 1:00pm
Friday 9:00am - 1:00pm
Saturday Closed
Sunday Closed
Last Collection Times
Monday ClosedTuesday 1:30pm
Wednesday 1:30pm
Thursday 1:30pm
Friday 1:30pm
Saturday Closed
Sunday Closed