Live Chat I-29 Community Nearby Traffic South Sioux City Post Office (Amenity postoffice) 2024-05-30 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to South Sioux City Post Office (Amenity Postoffice) Sioux City, IA 3.50 Dakota City, NE 5.05 Big Sioux, SD 7.89 Interstate highway exits close to South Sioux City Post Office (Amenity Postoffice) Exit 147b, i29 2.74 Exit 148, i29 2.76 Exit 149, i29 2.82 Interstate highways close to South Sioux City Post Office (Amenity Postoffice) i29 map 2.74 i680ne map 115.70 i229sd map 117.96 State roads close to South Sioux City Post Office (Amenity Postoffice) US 77 NE IA map 0.68 US 75 NE map 1.97 US 20 NE map 2.38