In general, those that are convicted of a crime by the county courts, are held at county prisons. In addition, those that may be awaiting trial, may also be held at a county court. Individuals convicted of a crime will be held at the county prison in the county where they were convicted of committing a crime, not in the county where they reside.
The county courts handle different types of cases than the state and federal courts. In general, less violent offenders are held at county prisons. In addition, county prisons generally have a focus on rehabilitation to avoid those convicted prisoners from re-offending. A county prison may however also house violent offenders, but they are likely to have less restrictions than they would at a state prison.