United States--u S Post Offices, Klickitat Klickitat, WA 98628 Phone : (509) 369-4753 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools United States Government--u.s. Post Offices, Klickitat, Zip Code Information Klickitat, WA 98628 Phone : (509) 369-4753 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Klickitat 103 N Main St Klickitat, WA 98628 Phone : (509) 369-4753 Business Category Post Offices Toll-Free           (800) ASK-USPS