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Post Offices in Clearlake Oaks

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

1. USPS Post Office Clearlake Oaks (CA)

13280 E Highway 20

Clearlake Oaks, CA 95423

The Post Office is open Monday to Friday from 8:30 am to 3:00 pm. It is closed Saturday and Sunday.