Popularity:#3 of 13 Post Offices in Trinity County#737 of 1,645 Post Offices in California#13,058 in Post Offices
Address, Phone Number, and Hours for Mad River Post Office, a Post Office, at Highway 36, Mad River CA.
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The Mad River Post Office, located in Mad River, CA, is a branch location of the United States Postal Service (USPS) that serves the Mad River community. The customer service postal facility offers mail and package delivery services, P.O. box services, and passport services. The USPS operates as an independent agency within the federal government, supported entirely by revenues generated through its operations.You may contact the Post Office for questions about: