Mercer County participates with Boyle County in a Joint Jail which is located in Boyle County.  The Jailer does maintain an office which iā€‹s located in the Mercer County Courthouse.

The Mercer County Jailer has custody in the responsibility of transporting prisoners to the Joint Jail as well as to and from judicial court sessions.  He is responsible for booking and preparing jail bonds and must prepare all paperwork and reports for the office.