United States · Florida · Ocala
Marion Correctional Institution
Data is aggregated from public sources and may be incomplete or out of date.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.
For families
How to send mail, money, and visit Marion Correctional Institution
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Marion Correctional Institution is a state prison located in Marion County, Florida. Rated capacity: 1,324. Reported population: 1,366. Security level: Close. Data sourced from the HIFLD Prison Boundaries open dataset.
Background
Marion Correctional Institution (MCI) is a state-operated prison for men located in Marion, Ohio. The prison houses inmates with a security classification of Level 1 or 2. It dates back to the establishment of its precursor in 1948, which occupied the location of a facility that housed German prisoners of war during World War II. Over the years, it housed inmates transferred from other correctional institutions, leading to the construction of the Marion Correctional Institution in 1952. The institution has hosted various inmate programs, legal interventions, and events. Marion Correctional Institution introduced initiatives such as the "Project Newgate" college program in the 1970s, offering educational opportunities to inmates before their release.
Source: Wikipedia article lead, CC-BY-SA.
Capacity
1,324
Current population
1,366
Occupancy
103%
Year opened
1954
Operational
Figures from official sources · verified 2 Jun 2026 · methodology
Facility profile
Population held
Mixed/unknown
Opened
1954
Region
Florida
Security level
Close
Death-row facility
No
Conditions
The Marion Correctional Institution experienced severe overcrowding, with over 2,000 coronavirus cases reported in a facility designed for 1,500 inmates. Inmates described living in dormitory settings where the virus spread rapidly between bunks, with one inmate immobilized by pain while hearing others coughing and gurgling nearby.
Visiting
No visiting information available.
Mailing
No mailing information available.
Practical info
Contact the operator's website for inmate-specific procedures.
Known issues
The facility faced a major coronavirus outbreak with over 2,000 cases despite a capacity of 1,500, indicating significant overcrowding and transmission risks in dormitory housing.
Contact & address
Conditions Risk Score
Derived signal — not a judgement. How it's calculated
- Overcrowding
- 5/30
- Oversight reports
- 0/30
- Structural flags
- 5/15
- Death signals
- 0/15
- Conditions text
- 3/10
What the score is responding to:
- · Operating at 103% of design capacity
- · Substantial documented known-issues record
- · Severe-conditions keyword in sources
This facility scores 13. The national average across 7,437 scored United States facilities is 2 — 11 points above national average.
Related facilities
Same country, matched on type + security level where possible.
- Nh Correctional Facility For WomenGoffstownCloseState prison154% occupancy
- Ga Diagnostic & Classification State PrisonJacksonCloseState prison136% occupancy
- Mat-Su PretrialPalmerCloseState prison100% occupancy
- Franklin Medical Center (Zone B)ColumbusCloseState prison101% occupancy
- Florida State Prison - West UnitRaifordCloseState prison103% occupancy
- Reception And Medical Center, West UnitLake ButlerCloseState prison107% occupancy
Compared to other facilities in United States
7436 peersReports
- propublica18 Jun 2020
The Prison Was Built to Hold 1,500 Inmates. It Had Over 2,000 Coronavirus Cases. — ProPublica Jason Thompson lay awake in his dormitory bed in the Marion Correctional Institution in central Ohio, immobilized by pain, listening to the sounds of “hacking and gurgling” as the novel coronavirus passed from bunk to bunk like a game of “sick hot potato,” he wrote in a Facebook post. Thompson lives in
Data completeness
84%How many of our profile fields are populated. We surface this so families and researchers know the limits.
Sources
- HIFLD Prison Boundaries
- HIFLD dataset query
- Wikipedia — Wikimedia Foundation
- HIFLD Prison Boundaries — US Department of Homeland Security â HIFLD Open Data
- Wikipedia category â Prisons in Ohio — Wikimedia Foundation
- OpenStreetMap — OpenStreetMap Contributors
- North Carolina Department of Adult Correction â Prison Facilities — State of North Carolina
- Wikidata — Wikimedia Foundation
- Wikidata (Q28451867)
- 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). Marion Correctional Institution. Retrieved October 23, 2026, from https://worldprisons.com/prisons/marion-correctional-institution
"Marion Correctional Institution." World Prisons. Accessed October 23, 2026. https://worldprisons.com/prisons/marion-correctional-institution.
@misc{worldprisons-marion-correctional-institu,
author = {{World Prisons}},
title = {Marion Correctional Institution},
year = {2026},
url = {https://worldprisons.com/prisons/marion-correctional-institution},
urldate = {2026-10-23}
}