Oklahoma State Reformatory is a state prison in Granite, Oklahoma, run by the Oklahoma Department of Corrections. The state classifies it as medium security. Federal facility data from 2020 put its capacity at about 999 beds.
Oklahoma State Reformatory Address and Phone
- Facility type
- State prison
- Address
- 1700 East First Street, Granite, OK 73547Open in Google Maps
- Main phone
- 405-698-5263
- Operated by
- Oklahoma Department of Corrections
- County
- Greer County
How to Find an Inmate at Oklahoma State Reformatory
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 Oklahoma Department of Corrections and can change at short notice. Read the official facility page and call ahead before you travel.
Jails and Police Near Oklahoma State Reformatory
Anyone arrested near Granite is booked into the county jail first; a state facility only receives people after sentencing, commitment or transfer.
Other State Prisons in Oklahoma
Open status checked against the official oklahoma.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.