Live Chat I-95 Community Nearby Traffic Derwood Post Office (Amenity postoffice) 2024-04-30 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Derwood Post Office (Amenity Postoffice) Washington Grove, MD 2.42 Gaithersburg, MD 3.22 Rockville, MD 4.67 Interstate highway exits close to Derwood Post Office (Amenity Postoffice) Exit 8, i270md 4.02 Exit 9b a, i270md 4.35 Exit 10, i270md 5.49 Interstate highways close to Derwood Post Office (Amenity Postoffice) i270md map 4.02 i495md map 13.13 i495va map 13.13 State roads close to Derwood Post Office (Amenity Postoffice) MD 115 map 1.49 MD 355 map 2.27 MD 200 map 2.93