California Men’s Colony (CMC) is a CDCR institution at Colony Drive, San Luis Obispo, CA 93409. The main phone number is (805) 547-7900.
The institution has two complexes, commonly called the East Facility and West Facility, with housing, treatment, education, vocational programming, and firefighting resources across the campus. Nathan Gaughan has served as acting warden since December 31, 2025.
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