According to our records, this business is located at 1630 S Delaware St. in San Mateo (in San Mateo County), California 94402, the location GPS coordinates are: 37.5559994 (latitude), -122.3088981 (longitude). San Mateo Post Office is categorized under Post Offices (SIC code 4311). Known organization branch manager is Judith Wolfe. You can contact the company by phone at (650) 349-2301.