"This groundbreaking study delves into the participation of county jails in pretrial release, marking a pioneering effort in this field. It assesses the pretrial status and risk levels of county jail populations, uncovering variations across counties of differing sizes. Additionally, it examines the challenges faced by county jails concerning their pretrial and overall inmate populations. The research scrutinizes the utilization of community-based programs by county jails to release pretrial detainees and monitor them post-release. Furthermore, it explores other county policies and practices influencing pretrial population release. This report serves as an initial exploration into counties' roles in pretrial release, featuring sections on introduction, key terms, and findings, including the prevalence of pretrial populations and challenges faced by counties."