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United States · IL · Galesburg

Knox County Jail

Low
Verified 29 May 2026
Fresh · 1d ago

Data is aggregated from public sources and may be incomplete or out of date.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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How to send mail, money, and visit Knox County Jail

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Photograph of Knox County Jail

Background

The Knox County Jail, located on the public square in Knoxville, is a former county jail used by Knox County, Illinois. Built in 1845, the jail was the second used in the county; it replaced a log jail which was thought to be insufficiently secure. Contractor Alvah Wheeler built the two-story brick building for $7,724. The county's only official hanging was conducted at the jail in 1873, when John M. Osborne was executed for the murder of Adelia Matthews; several hundred people came to watch his execution. Later in the same year, the county seat and the jail were both moved to Galesburg; the Knoxville jail is now part of the Knox County Museum.

Source: Wikipedia article lead, CC-BY-SA.

Capacity

Current population

Occupancy

Year opened

Operational

Facility profile

Operator

Knox County Sheriff

Population held

Mixed/unknown

Opened

Region

IL

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

152 South Kellogg Street, Galesburg 61401

Conditions Risk Score

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

Insufficient data
We don't have enough public data on this facility to score it. Have something to add? Send us a correction.

Data completeness

34%

How many of our profile fields are populated. We surface this so families and researchers know the limits.

Sources