Live Chat I-95 Community Nearby Traffic Columbia Post Office (Amenity postoffice) 2024-06-04 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Columbia Post Office (Amenity Postoffice) Clarksville, MD 5.37 Ellicott City, MD 5.97 Simpsonville, MD 5.97 Interstate highway exits close to Columbia Post Office (Amenity Postoffice) Exit 38b a, i95 7.74 Exit 41b a, i95 8.74 Exit 35b a, i95 9.68 Interstate highways close to Columbia Post Office (Amenity Postoffice) i95 map 7.74 i70 map 10.06 i695md map 14.39 State roads close to Columbia Post Office (Amenity Postoffice) US 29 DC MD map 2.08 MD 108 map 2.26 MD 175 map 3.42