Oshkosh Correctional Institution is a state prison in Oshkosh, Wisconsin, run by the Wisconsin Department of Corrections. The state classifies it as medium security. Federal facility data from 2020 put its capacity at about 1,494 beds.
Oshkosh Correctional Institution Address and Phone
- Facility type
- State prison
- Address
- 1730 W Snell Rd, Oshkosh, WI 54901Open in Google Maps
- Main phone
- (920) 231-4010
- Operated by
- Wisconsin Department of Corrections
- County
- Winnebago County
How to Find an Inmate at Oshkosh Correctional Institution
People serving state sentences are listed in the state's offender search, not on county jail rosters. Search by last and first name, or by the state inmate number if you have it; the result shows where the person is held now, which can change after a transfer.
Visiting, Mail and Phone Calls
Visiting days, visitor approval, dress rules and the mailing format for letters are set by the Wisconsin Department of Corrections and can change at short notice. Read the official facility page and call ahead before you travel.
Jails and Police Near Oshkosh Correctional Institution
Anyone arrested near Oshkosh is booked into the county jail first; a state facility only receives people after sentencing, commitment or transfer.
Other State Prisons in Wisconsin
Open status checked against the official doc.wi.gov facility listing in November 2026. Address and phone come from that listing or, where it shows none, from the federal HIFLD prison dataset. This page lists no inmates.