United States Government--post Office, Zip Codes Soda Springs, ID 83230 Phone : (208) 547-3794 Business Category Post Offices Government Offices & Public Schools Post Office - Soda Springs 220 S Main St Soda Springs, ID 83276 Phone : (208) 547-3794 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (208) 547-0046