Knox County Jail
Also known as: Knoxville Jail
Why it's listed
Built in 1845 at the northwest corner of the Public Square in Knoxville, the Knox County Jail combined a brick front section, which held the office and the jailer's family quarters, with a stone rear section containing the cells. The cell block has six solitary cells, each five by nine feet, surrounded by massive stone walls, plus two holding cells upstairs. Alvah Wheeler built it under a contract relet after an earlier contract with Zelotes Cooley was rescinded. It replaced an insecure log jail. The building held murderers, horse thieves, mentally ill people awaiting transport, and petty offenders until the county seat moved to Galesburg in 1873. It was also the site of the county's only official hanging, that of John M. Osborne in March 1873. A wooden addition around 1900 turned it into a residence. Restored from 1961 to 1968 by Knox County Historic Sites, it now forms part of the county museum and receives visitors each year.
Significance in brief: The jail is locally significant under Criterion A for its link to the governmental and political administration of Knox County from 1845 to 1873. It served as the county's main jail until the county seat moved to Galesburg. It was also the site of the only official hanging in Knox County, in 1873.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 92000050, listed February 13, 1992. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | Public Sq., Market St., Knoxville |
|---|---|
| County | Knox County |
| Listed | February 13, 1992 |
| Reference number | 92000050 |
| Resource type | Building |
| Period of significance | 1845-1873 |
| Architect / builder | Cooley, Zelotes; Wheeler, Alvah |
| Architectural style | Mid-19th century |
| Criteria |
|
| Areas of significance | Politics/Government |
| Level of significance | Local |
| Status (as stated in the nomination) | Restored by Knox County Historic Sites between 1961 and 1968 and now open to the public as part of the Knox County Museum; the wooden addition is used for museum storage. |
| Acreage | 0.9 |
| Coordinates | 40.90874, -90.28511 (NPS GIS) |
What listing means for this property
For a publicly owned building or structure, listing mainly matters when federal funds, permits or licences are involved: projects then go through Section 106 review so effects on the property are considered. Listing also strengthens applications for preservation grants and, for leased income-producing uses, can enable the federal rehabilitation tax credit.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 92000050.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q23302759
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.