Live Chat I-35 Community Nearby Traffic Mason City Post Office (Amenity postoffice) 2024-04-27 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Mason City Post Office (Amenity Postoffice) Rock Falls, IA 10.99 Plymouth, IA 13.32 Manly, IA 15.05 Interstate highway exits close to Mason City Post Office (Amenity Postoffice) Exit 194, i35 12.65 Exit 193, i35 12.85 Exit 197, i35 13.06 Interstate highways close to Mason City Post Office (Amenity Postoffice) i35 map 12.65 i90 map 56.38 i80 map 162.72 State roads close to Mason City Post Office (Amenity Postoffice) US 65 IA map 0.08 IA 122 map 0.76 US 18 IA map 5.38