United States · MI · Ionia
Ionia Correctional Facility
Data is aggregated from public sources and may be incomplete or out of date. Always verify with primary sources before acting on any figure. See data sources.
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Background
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
Facility profile
Population held
Mixed/unknown
Opened
—
Region
MI
Security level
Maximum
Death-row facility
No
Conditions
No conditions summary available yet.
Visiting
No visiting information available.
Mailing
No mailing information available.
Practical info
Contact the operator's website for inmate-specific procedures.
Known issues
No major issues documented in our database.
Contact & address
Conditions Risk Score
Derived signal — not a judgement. How it's calculated
Related facilities
Same country, matched on type + security level where possible.
- Woodman State JailGatesvilleMaximumState prison720% occupancy
- Centinela State Prison (Cen)ImperialMaximumState prison150% occupancy
- Kern Valley State Prison (Kvsp)DelanoMaximumState prison152% occupancy
- Diagnostic And Evaluation CenterLincolnMaximumState prison178% occupancy
- High Desert State Prison (Hdsp)SusanvilleMaximumState prison152% occupancy
- Calipatria State Prison (Cal)CalipatriaMaximumState prison161% occupancy
Data completeness
54%How many of our profile fields are populated. We surface this so families and researchers know the limits.
Sources
- Wikipedia — Wikimedia Foundation
- Wikipedia category â Prisons in Michigan — Wikimedia Foundation
- OpenStreetMap — OpenStreetMap Contributors
- Wikidata — Wikimedia Foundation
- Wikidata (Q6063619)
- Wikipedia
- See /data-sources for our overall methodology.
Cite this page
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 October 20, 2026, from https://worldprisons.com/prisons/ionia-maximum-correctional-facility
"Ionia Correctional Facility." World Prisons. Accessed October 20, 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 = {2026-10-20}
}