United States · New York
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Lyon Mountain Correctional Facility was a prison located in the western part of the Town of Dannemora in Clinton County, New York, near the community of Lyon Mountain. The prison closed on January 31, 2011.
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 28 May 2026 · methodology
Operator
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Population held
Mixed/unknown
Opened
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Region
New York
Security level
Minimum
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.
No public contact details available.
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). Lyon Mountain Correctional Facility. Retrieved July 21, 2026, from https://worldprisons.com/prisons/lyon-mountain-correctional-facility
"Lyon Mountain Correctional Facility." World Prisons. Accessed July 21, 2026. https://worldprisons.com/prisons/lyon-mountain-correctional-facility.
@misc{worldprisons-lyon-mountain-correctional-,
author = {{World Prisons}},
title = {Lyon Mountain Correctional Facility},
year = {2026},
url = {https://worldprisons.com/prisons/lyon-mountain-correctional-facility},
urldate = {2026-07-21}
}