Post Office - Arimo 25 N Meadowview St Arimo, ID 83214 Phone : (208) 254-3512 Business Category Post Offices Toll-Free           (800) ASK-USPS United States Government--post Office, Arimo Branch Highway 91 Arimo, ID 83214 Phone : (208) 254-3512 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools