United States Government--u S Postal Service, Rockford Rockford, WA 99030 Phone : (509) 291-3551 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Rockford 36 W Emma St Rockford, WA 99030 Phone : (509) 291-3551 Post Office - Rockford Business Category Post Offices Toll-Free           (800) ASK-USPS