Popularity:#5 of 21 Post Offices in San Luis Obispo County#209 of 1,645 Post Offices in California#4,281 in Post Offices
Address, Phone Number, and Hours for Los Osos Post Office, a Post Office, at Los Osos Valley Road, Los Osos CA.
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The Los Osos Post Office, located in Los Osos, CA, is a branch location of the United States Postal Service (USPS) that serves the Los Osos 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: