Live Chat I-5 Community Nearby Traffic Castle Park Post Office (Amenity postoffice) 2024-05-24 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Castle Park Post Office (Amenity Postoffice) Alpine, CA 0.00 Bonita, CA 0.00 Imperial Beach, CA 0.00 Interstate highway exits close to Castle Park Post Office (Amenity Postoffice) Exit 27, i8 17.96 Exit 23, i8 19.46 Exit 30, i8 20.62 Interstate highways close to Castle Park Post Office (Amenity Postoffice) i8 map 17.96 i15 map 21.49 i805ca map 36.22 State roads close to Castle Park Post Office (Amenity Postoffice) CA 78 map 3.49 CA 67 map 3.50 CA CR S4 map 13.86