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As of 2020, the population of San Luis Obispo County, California is approximately 283,111.
The address of the San Luis Obispo County Historical Society is: 696 Monterey St., San Luis Obispo, CA 93401
The web address of the San Luis Obispo County Historical Society Museum is: http://www.slochs.org
San Luis Obispo County
The phone number of the San Luis Obispo County Historical Society Museum is: 805-543-0638.