Findings confirm that in both counties, persons with severe mental illness who are enrolled in Medicaid at the time of their release from jail are more likely to access community services, to receive services more quickly, and to receive more days of service than those without Medicaid in the 90 days after their release from jail. With that said, it does not make good public policy sense to disenroll persons with severe mental illness from Medicaid when they are in jail. This report presents findings that focus directly on the possible advantages of Medicaid enrollment for this population. The study employed a prospective cohort design that used administrative data from two-large urban counties (King County, WA and Pinellas County, FL) over 2 years to examine the access to and use of community mental health services after the release from jail for persons with severe mental illness. Tables, references