The state of California has 58 counties.
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- Madera County, California
- Marin County, California
- Mariposa County, California
- Mendocino County, California
- Merced County, California
- Modoc County, California
- Mono County, California
- Monterey County, California
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- Sacramento County, California
- San Benito County, California
- San Bernardino County, California
- San Diego County, California
- San Francisco County, California
- San Joaquin County, California
- San Luis Obispo County, California
- San Mateo County, California
- Santa Barbara County, California
- Santa Clara County, California
- Santa Cruz County, California
- Shasta County, California
- Sierra County, California
- Siskiyou County, California
- Solano County, California
- Sonoma County, California
- Stanislaus County, California
- Sutter County, California
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- Tehama County, California
- Trinity County, California
- Tulare County, California
- Tuolumne County, California