Fort Belvoir, VA - Post Office
The Fort Belvoir Post Office is located at 5875 21ST ST, Fort Belvoir, Virginia. The lobby is open 24 hours a day, and the window hours are Monday through Friday from 0900-1700 and Saturday from 0900-1300. Last collection is done Monday through Friday at 1700 and Saturday at 1500. For further information, call the post office directly at (703) 781-7735.