According to our records, this business is located at P.O. BOX 9998 in San Francisco (in San Francisco County), California 94117, the location GPS coordinates are: 37.7749295 (latitude), -122.4194155 (longitude). Clayton St Post Office is categorized under Post Offices (SIC code 4311). Known organization branch manager is Rosemarie Fernandez. You can contact the company by phone at (415) 621-5816.