United States Government--postal Service U S, Dixie Post Office Highway 12 Dixie, WA 99329 Phone : (509) 529-1433 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Dixie 10202 E Highway 12 Dixie, WA 99329 Phone : (509) 529-1433 Business Category Post Offices Toll-Free           (800) ASK-USPS