California Men’s Colony (CMC)

California Men’s Colony (CMC) is a CDCR institution in San Luis Obispo. CDCR’s current facility locator lists the main phone as (805) 547-7900 and the physical address as Colony Drive, San Luis Obispo, CA 93409.

CDCR’s current CMC page describes the prison as a two-complex institution commonly referred to as 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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