Post Office - Carlton 2274 Us Highway 153 Carlton, WA 98814 Phone : (509) 997-6091 Business Category Post Offices Toll-Free           (800) ASK-USPS U.s. Government--u.s. Postal Service, Carlton Post Office Twisp, WA 98856 Phone : (509) 997-6091 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools