This report describes and compares bench and fugitive warrant arrests in Jefferson County, Kentucky (hereinafter Louisville Metro) and the City of St. Louis, Missouri during the period 2006 to 2019. The report is based on two site-specific reports that focus on the individual jurisdictions (see "Warrant Arrests in the City of St. Louis: 2002 –2019" and "Examining Warrant Arrests in Jefferson County, Kentucky: 2006 to 2019" for additional details). The goal is to shed light on the enforcement of warrants, which are a large part of policing practice. This comparative approach provides insight into variability in the levels and nature of warrant arrests in communities with differing legal contexts and government structures. This report is a starting point to understand trends in warrant enforcement across two jurisdictions with similar social and economic landscapes. It is our hope that the findings are useful for stakeholders as they consider ways to make the criminal legal system more efficient and equitable.