Live Chat I-95 Community Nearby Traffic Potomac Post Office (Amenity postoffice) 2024-05-21 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Potomac Post Office (Amenity Postoffice) Washington, DC 3.08 Arlington, VA 3.49 Oxon Hill, MD 5.94 Interstate highway exits close to Potomac Post Office (Amenity Postoffice) Exit 176b a, i95 2.76 Exit 177c b, i95 2.85 Exit 2b a, i95 4.54 Interstate highways close to Potomac Post Office (Amenity Postoffice) i95 map 2.76 i66 map 8.37 i495va map 10.58 State roads close to Potomac Post Office (Amenity Postoffice) US 1 VA map 0.80 VA 7 map 1.25 VA 400 map 1.30