Background
The United States correctional system consists of local and tribal jails, state prisons, federal prisons, military and immigration facilities, and community correctional facilities, which include probation and parole programs.[1]
- Jails: Typically, jails house persons charged with a crime who are awaiting trial or transfer, as well as persons convicted who have sentences of less than 1 or 2 years. Persons leaving jail are often supervised on probation for a defined period of time.
- Prisons: In contrast to jails, prisons house persons convicted of a felony serving longer sentences. Whether the offense committed involves federal law or state law determines placement in a federal or state prison.
- Parole: The term parole refers to conditional release from prison prior to completing a sentence with the responsibility of completing the remainder of the sentence in the community. Upon leaving prison, many people continue to be monitored by the correctional system while on parole.
At any point in time, about twice as many persons are incarcerated in prisons than in jails in the United States, but over the course of a year the number of individuals incarcerated in the jail system far exceeds those incarcerated in prisons (Figure 1); this difference over a year results from the low turnover rates in prisons (longer stays and infrequent releases) versus high turnover rates in jails (shorter stays and frequent releases).[2]
Global Prison Statistics
In 2021, the United States had a higher total prison population in than any other country in the world (Figure 2).[3,4]