Tuolumne County, California
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Tuolumne County (/tuːˈɒləmiː/ "To All o' Me", with a silent N), officially the County of Tuolumne, is a county in the U.S. state of California. As of the 2010 census, the population was 55,365. The county seat and only incorporated city is Sonora.
Tuolumne County comprises the Sonora, CA Micropolitan Statistical Area. The county is in the Sierra Nevada region.