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Iowa State Penitentiary

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[40°39′5.4″N91°18′12.96″W / 40.651500°N 91.3036000°W / 40.651500; -91.3036000 Prison in Fort Madison, Iowa, United States Iowa State Penitentiary The Iowa State Penitentiary ( ISP) is an Iowa Department of Corrections maximum security prison for men located in the Lee County, Iowa, community of Fort Madison. This facility should not be confused with the Historical Iowa State Penitentiary, which was shut down in 2015[\[1\]](https://en.wikipedia.org/wiki/Iowa_State_Penitentiary#cite_note-1) after being open for 175 years.[\[2\]](https://en.wikipedia.org/wiki/Iowa_State_Penitentiary#cite_note-2) The HISP itself was a 550-person maximum security unit. Also on the complex was a John Bennett Correctional Center \- a 169-person medium security unit. The HISP included two minimum-security farms with about 170 people who were located within a few miles of the main complex.[\[3\]](https://en.wikipedia.org/wiki/Iowa_State_Penitentiary#cite_note-3) The complex also had a ten-person multiple care unit, and a 120-bed special-needs unit for prisoners with mental illness or other diseases that require special medical care. In total, there were about 950 inmates and 510 staff members.

Capacity

760

Current population

—

Occupancy

—

Year opened

2015

Operational

Figures from official sources · verified 3 Jul 2026 · methodology

Facility profile

Population held

Mixed/unknown

Opened

2015

Region

IA

Security level

—

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

2111 330th Avenue, Fort Madison 52627
+1 319 372-5432
Official site

Conditions Risk Score

Derived signal — not a judgement. How it's calculated

—
Insufficient data
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Related facilities

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Compared to other facilities in United States

7436 peers
Capacity (beds)this: 760 · peers avg: 547 (+39%)

Data completeness

52%

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Sources

Cite this page

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APA
World Prisons. (2026). Iowa State Penitentiary. Retrieved October 21, 2026, from https://worldprisons.com/prisons/iowa-state-penitentiary-us
Chicago
"Iowa State Penitentiary." World Prisons. Accessed October 21, 2026. https://worldprisons.com/prisons/iowa-state-penitentiary-us.
BibTeX
@misc{worldprisons-iowa-state-penitentiary-us,
  author = {{World Prisons}},
  title = {Iowa State Penitentiary},
  year = {2026},
  url = {https://worldprisons.com/prisons/iowa-state-penitentiary-us},
  urldate = {2026-10-21}
}