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San Mateo County, California
county in California, United States / From Wikipedia, the free encyclopedia
San Mateo County (/ˌsæn məˈteɪ.oʊ/ SAN mə-TAY-oh; Spanish for "Saint Matthew") is a county in the U.S. state of California. As of the 2020 census, the population was 764,442.[1] The county seat is Redwood City.[2] The county is in the San Francisco Bay Area region. It is on the San Francisco Peninsula.
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