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What state is area code 707?

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Area code 707 is a California telephone area code that was split from area code 916 on March 1, 1959. It covers the northwestern portion of the state of California. It serves part of the northern San Francisco Bay Area, as well as the North Coast and the northwestern portion of the state. read more

More About Area Code 707 Area code 707 was first put in service January 1, 1959. Currently, the largest city it serves is Santa Rosa, CA, and it overlaps coverage areas with area code . read more

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