Portola Valley, California Area Code
Portola Valley, CA Area Codes are
Portola Valley, CA is officially utilizing one area code which is area code 650.
In addition to Portola Valley, CA area code information read more about area code 650 details and California area codes.
Portola Valley, CA is located in San Mateo County and observes the Pacific Time Zone. View our Times by Area Code tool.
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