Jisho

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Wikipedia definition
1. San Mateo County, CaliforniaSan Mateo County is a county located in the San Francisco Bay Area of the U.S. state of California. It covers most of the San Francisco Peninsula just south of San Francisco, and north of Santa Clara County. San Francisco International Airport is located at the northern end of the county, and Silicon Valley begins at the southern end. As of 2010 the population was 718,451. The county seat is Redwood City. It is strongly Democratic and ethnically diverse.
Read “San Mateo County, California” on English Wikipedia
Read “サンマテオ郡” on Japanese Wikipedia
Read “San Mateo County, California” on DBpedia

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