During 2015, the latest year for which data are available, there were 10.9 million admissions to these correctional facilities, which hold individuals who are awaiting trial or serving short sentences. The government running the jail—usually a county—has a constitutional mandate to provide people booked into these facilities with necessary health care. Counties designing a jail health care program targeted to meet the needs of their incarcerated population have the opportunity to improve the health of people in jail and the broader community, spend public dollars more effectively, and, in some cases, reduce recidivism.