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More contact info for US Post Office:

US Post Office

135 W 25th Ave
94403 San Mateo

Phone:

(650) 358-8490

Fax:

(650) 349-9726

• https://tools.usps.com/go/POLocatorDetailsAction!input.action?locationTypeQ=po&address=&radius=&locationType=po&locationID=1352244&locationName=25TH+AVENUE&address2=&address1=135+W+25TH+AVE&city=SAN+MATEO&state=CA&zip5=94403&zip4=9991&tollFree=800-ASK-USP