The Louisville Metro Department of Corrections (LMDC) operates the largest jail system in Kentucky. The Main Jail facility, located at 400 South Sixth Street in downtown Louisville, serves as the primary booking and intake center for all arrests within Jefferson County and Louisville Metro. LMDC also operates the Community Corrections Center and the Hall of Justice holding facility. Together, these facilities process thousands of bookings each month, making Jefferson County the highest-volume booking jurisdiction in the state.

LMDC maintains a publicly accessible online inmate lookup system that allows searches by name, booking number, or other identifying information. Results include booking photographs, charge details, bond amounts, court dates, and housing assignments. The system updates frequently as new bookings are processed throughout the day.

About Jefferson County

Jefferson County merged its government with the City of Louisville in 2003 to form Louisville Metro, making it a consolidated city-county government. Despite the merger, both “Jefferson County” and “Louisville” continue to appear as separate geographic references in many data systems. Louisville is Kentucky's largest city and the 29th most populous city in the United States. The county seat is Louisville. Major institutions include the University of Louisville, UPS Worldport (the world's largest automated package handling facility), and Churchill Downs, home of the Kentucky Derby. Jefferson County's economy is anchored by healthcare (Humana, Norton Healthcare), logistics (UPS), bourbon distilling (Brown-Forman, Beam Suntory), and manufacturing.