Live Chat I-70 Community Nearby Traffic Frederick Post Office (Amenity postoffice) 2024-05-28 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Frederick Post Office (Amenity Postoffice) Unionville, MD 5.19 Walkersville, MD 7.75 New Market, MD 8.94 Interstate highway exits close to Frederick Post Office (Amenity Postoffice) Exit 55, i70 2.18 Exit 56, i70 2.37 Exit 54, i70 3.15 Interstate highways close to Frederick Post Office (Amenity Postoffice) i70 map 2.18 i270md map 4.14 i81 map 40.15 State roads close to Frederick Post Office (Amenity Postoffice) MD 144 map 1.44 US 15 MD map 2.26 MD 26 map 2.49