Post Office - Twin Falls 1376 Fillmore St Twin Falls, ID 83301 Phone : (208) 734-1452 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (208) 736-7053 Automated Postal Center - Pioneer Station 1376 Fillmore St Twin Falls, ID 83301 Phone : (208) 734-1452 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS Fax           (208) 734-5587 Automated Postal Center - Twin Falls 1376 Fillmore St Twin Falls, ID 83301 Phone : (208) 734-1452 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS Fax           (208) 736-7053 Post Office - Pioneer Station 1376 Fillmore St Twin Falls, ID 83301 Phone : (208) 734-1452 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (208) 734-5587