Live Chat I-880 CA Community Nearby Traffic Union City Post Office (Amenity postoffice) 2024-05-03 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Union City Post Office (Amenity Postoffice) Fremont, CA 2.34 Hayward, CA 4.82 Newark, CA 6.39 Interstate highway exits close to Union City Post Office (Amenity Postoffice) Exit 23, i880ca 1.49 Exit 22, i880ca 1.52 Exit 24, i880ca 2.44 Interstate highways close to Union City Post Office (Amenity Postoffice) i880ca map 1.49 i580ca map 11.24 i680ca map 11.44 State roads close to Union City Post Office (Amenity Postoffice) CA 238 map 2.72 CA 84 map 3.16 CA 92 map 6.85