United States · MI · Ionia
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The Ionia Correctional Facility (ICF), also known as "I-Max" after its maximum security housing units, is a U.S. state prison located in Ionia, Michigan. The prison was opened in 1987 and consists of five maximum security level V housing units and two medium security level II housing units. It is one of three maximum security men's prison facilities in Michigan, along with Marquette Branch Prison in Marquette, and Baraga Correctional Facility in Baraga. (The Standish Maximum Correctional Facility in Standish was a fifth maximum security men's prison until its closure in 2009 eliminating 604 Level V security beds.) Although the Ionia Correctional Facility was once the state's only supermax prison, Michigan downgraded the facility from a level VI (or supermax) to a level V maximum security prison in 2004. Three of the level V housing units are designated 'general population'.
Source: Wikipedia article lead, CC-BY-SA.
Capacity
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Current population
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Occupancy
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Year opened
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Operational
Figures from official sources · verified 31 May 2026 · methodology
Population held
Mixed/unknown
Opened
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Region
MI
Security level
Maximum
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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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). Ionia Correctional Facility. Retrieved July 21, 2026, from https://worldprisons.com/prisons/ionia-maximum-correctional-facility
"Ionia Correctional Facility." World Prisons. Accessed July 21, 2026. https://worldprisons.com/prisons/ionia-maximum-correctional-facility.
@misc{worldprisons-ionia-maximum-correctional-,
author = {{World Prisons}},
title = {Ionia Correctional Facility},
year = {2026},
url = {https://worldprisons.com/prisons/ionia-maximum-correctional-facility},
urldate = {2026-07-21}
}