Live Chat I-680 CA Community Nearby Traffic Walnut Creek Post Office (Amenity postoffice) 2024-05-24 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Walnut Creek Post Office (Amenity Postoffice) Lafayette, CA 4.45 Alamo, CA 4.83 Moraga, CA 6.46 Interstate highway exits close to Walnut Creek Post Office (Amenity Postoffice) Exit 46a, i680ca 1.57 Exit 45, i680ca 1.93 Exit 46b, i680ca 2.83 Interstate highways close to Walnut Creek Post Office (Amenity Postoffice) i680ca map 1.57 i580ca map 14.13 i880ca map 18.03 State roads close to Walnut Creek Post Office (Amenity Postoffice) CA 24 map 2.13 242 NORTHBOUND map 8.68 242 SOUTHBOUND map 8.76