United States
Corrections in the United States
Why US incarceration is many systems rather than one, the difference between prisons and jails, and a properly scoped figure for the prison population.
Facts on this page were checked against their sources on .
Incarceration in the United States is administered at more than one level, and by many separate authorities. Each state runs its own prison system under its own law; the federal Bureau of Prisons runs the federal system; and counties and cities run local jails. Reserved state powers under the Tenth Amendment put the general administration of criminal punishment with the states.
AnalysisBecause prison administration is a state function, conditions, regimes and organisation differ between the states, and a national total is a starting point for a state-level question rather than an answer to it. This pilot has researched no individual state’s corrections system and describes none.
The same idea, explained generally
- What is justice?
Justice is the principle that people should be treated according to rules that apply equally to everyone, decided by bodies that are authorised, constrained, and answerable. This guide explains what that means institutionally.
- Why do justice systems need oversight?
Justice institutions hold coercive powers, often operate out of public view, and make decisions that are hard to reverse. This guide explains the oversight mechanisms built to detect and correct errors, and their limits.
Sources
Sources
Tenth Amendment to the Constitution of the United States
Legal Information Institute, Cornell Law School (reproducing the enacted constitutional text) · Legislation · 1791-12-15 · link verified 2026-07-24
Verbatim text: 'The powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people.' Supports the reserved-powers structure of US federalism — that the states, not the federal government, hold residual authority. Cornell LII reproduces the enacted text; the constitutional text itself is authoritative. Does NOT support any claim about how a particular power is allocated in practice.
Prisoners in 2023 — Statistical Tables
Bureau of Justice Statistics, U.S. Department of Justice · Government publication · 2025-09-30 · link verified 2026-07-24
Reference date 31 December 2023 (yearend); published September 2025; 98th in a series begun in 1926. Supports: the US prison population under the jurisdiction of state and federal correctional authorities was 1,254,200 at yearend 2023, up 2% from 1,230,100 in 2022; persons sentenced to more than one year were 1,210,300 (96%); those under Federal Bureau of Prisons jurisdiction sentenced to more than one year were 143,300 (down 2% from 146,100). This is a PRISON count (state and federal correctional authorities); it does NOT include local jail populations, which BJS counts in a separate Jail Inmates series. It aggregates 50 separately administered state systems plus the federal system and describes none individually. Not a rate; supports no cross-jurisdiction comparison.