Area code 650

Updated on Nov 21, 2024

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State California

Cities San Mateo, Redwood City, Mountain View, Burlingame, Menlo Park

Area code 650 is a California telephone area code in the San Francisco Bay Area that was split from area code 415 on August 2, 1997. It includes most of San Mateo County (except the northernmost portion) and the extreme northwestern portion of Santa Clara County including Palo Alto, Mountain View, and Los Altos.

San Francisco County

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