This report offers some much needed clarity by piecing together this country’s disparate systems of confinement. The American criminal justice system holds more than 2.3 million people in 1,719 state prisons, 102 federal prisons, 942 juvenile correctional facilities, 3,283 local jails, and 79 Indian Country jails as well as in military prisons, immigration detention facilities, civil commitment centers, and prisons in the U.S. territories. And the Prison Policy Initiative goes deeper to provide further detail on why convicted and not convicted people are locked up in local jails.