United States · CA · Ione
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California adult institution operated by the California Department of Corrections and Rehabilitation. CDCR code: MCSP.
Mule Creek State Prison (MCSP) is a California State Prison for men. It was opened in June 1987, and covers 866 acres (350 ha) located in Ione, California. The prison has a staff of 1,242 and an annual operating budget of $157 million. As of July 31, 2022, MCSP was incarcerating people at 115.2% of its design capacity, with 3,785 occupants.
Source: Wikipedia article lead, CC-BY-SA.
Capacity
1,700
Current population
—
Occupancy
—
Year opened
1987
Operational
Figures from official sources · verified 29 May 2026 · methodology
Population held
Mixed/unknown
Opened
1987
Region
CA
Security level
—
Death-row facility
No
No conditions summary available yet.
No visiting information available.
No mailing information available.
Contact the operator's website for inmate-specific procedures.
No major issues documented in our database.

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Source: Wikidata + Wikipedia.
Derived signal — not a judgement. How it's calculated
Same country, matched on type + security level where possible.
How many of our profile fields are populated. We surface this so families and researchers know the limits.
Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.
World Prisons. (2026). Mule Creek State Prison. Retrieved July 21, 2026, from https://worldprisons.com/prisons/mule-creek-state-prison
"Mule Creek State Prison." World Prisons. Accessed July 21, 2026. https://worldprisons.com/prisons/mule-creek-state-prison.
@misc{worldprisons-mule-creek-state-prison,
author = {{World Prisons}},
title = {Mule Creek State Prison},
year = {2026},
url = {https://worldprisons.com/prisons/mule-creek-state-prison},
urldate = {2026-07-21}
}