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Post Offices in Rio Oso

Click on the Post Office from this list of 1 Post Offices in Rio Oso to view the opening hours, phone number, drop-off times, services and other information.

1. USPS Post Office Rio Oso (CA)
2156 Rio Oso Rd
Rio Oso, CA 95674
The Post Office is open Monday to Wednesday and on Friday from 1:00 pm to 5:00 pm and on Saturday from 7:30 am to 10:30 am. It is closed on Thursday and on Sunday.