The most recent federal census of adult correctional facilities counted 1,677 prisons in the United States, split among state systems, the Federal Bureau of Prisons, and privately operated sites.1Bureau of Justice Statistics. Census of State and Federal Adult Correctional Facilities, 2019 – Statistical Tables That is the answer if you mean prisons in the narrow sense. If you mean every place the government locks people up, add local jails, juvenile facilities, immigration detention sites, and tribal jails, and the total pushes past 6,000, holding close to two million people on any given day.
The gap between those two numbers is not a technicality. It reflects the fact that incarceration in America is spread across separate systems run by different levels of government, each counted by a different agency on a different schedule.
The 1,677 Adult Prisons
The Bureau of Justice Statistics runs a Census of State and Federal Adult Correctional Facilities every five to seven years.2Bureau of Justice Statistics. Census of State and Federal Adult Correctional Facilities Its midyear 2019 count found 1,677 facilities: 1,155 state-operated, 111 federal, and 411 privately operated.1Bureau of Justice Statistics. Census of State and Federal Adult Correctional Facilities, 2019 – Statistical Tables
Not all 1,677 are the walled compounds most people picture. BJS separates confinement facilities, where people are locked in, from community-based facilities like halfway houses and work-release centers. Of the total, 1,161 were confinement facilities (1,079 public, 82 private), and the remaining 500-plus were lower-security residential sites still operating under correctional authority.3Bureau of Justice Statistics. Census of State and Federal Adult Correctional Facilities, 2019 – Statistical Tables
State Prisons
State governments run the bulk of the country’s prisons. The 2019 census counted 1,155 state-operated facilities, roughly 968 of them confinement prisons. Each state maintains its own department of corrections and its own facility network, so no two systems look alike. Texas alone operates about 100 individual units. California and Florida also run networks measured in the dozens. Smaller states may operate fewer than ten.
Because state prisons handle everything from violent felonies to low-level drug offenses, they hold the majority of the country’s prison population. About 82 percent of people in confinement prisons at midyear 2019 were in state facilities, 11 percent in federal, and 7 percent in private prisons.3Bureau of Justice Statistics. Census of State and Federal Adult Correctional Facilities, 2019 – Statistical Tables
Federal Prisons
The Federal Bureau of Prisons currently operates 122 institutions across the country, holding people convicted of federal crimes like drug trafficking, fraud, weapons offenses, and immigration violations.4Federal Bureau of Prisons. Our Locations The 2019 BJS census recorded 111 BOP facilities; the current agency count is higher. Federal law places control of these institutions under the Attorney General.5Office of the Law Revision Counsel. 18 USC 4001 – Limitation on Detention; Control of Prisons The BOP also runs six regional offices, two staff training centers, a headquarters, and 22 residential reentry management offices, none of which are counted as prisons themselves.
Private Prisons
Private corporations operate 411 adult correctional facilities counted in the BJS census, including 82 confinement prisons and hundreds of community-based residential sites. Twenty-seven states and the federal government contract with private operators for some portion of their incarcerated population. Private operators also hold an estimated 79 percent of ICE detainees, either through direct federal contracts or through local governments that subcontract to them.
Local Jails Are Not Prisons, but the Question Usually Includes Them
Jails and prisons hold different populations for different reasons. Prisons hold people serving sentences after conviction, usually a year or more. Jails hold people who have just been arrested, are awaiting trial, or are serving short sentences for misdemeanors and minor felonies. County sheriffs run most of them; some cities run their own.
BJS tracks about 2,900 local jails through its Census of Jails.6Bureau of Justice Statistics. Census of Jails Other counts run past 3,000 depending on how smaller municipal lockups are classified. Because every county needs a booking and holding facility, jails are the most geographically dispersed detention sites in the country. A rural county lockup with 20 beds and New York City’s Rikers Island complex both show up in the same count. Jails also serve as pass-throughs for other systems: ICE contracts with local jails to hold immigration detainees, and some jails hold sentenced people awaiting transfer to state prison. The nationwide jail population hovers around 700,000 on any given day.
Juvenile Facilities
Facilities for minors are counted separately from the adult system. The Office of Juvenile Justice and Delinquency Prevention found 1,323 residential placement facilities holding youth charged with or adjudicated for offenses as of October 2020, holding about 25,014 young people on the census date.7Office of Juvenile Justice and Delinquency Prevention. Juvenile Residential Facility Census 2020 – Selected Findings They range from small group homes to secure detention centers that resemble adult jails. State and local juvenile justice agencies operate them, not adult corrections departments, and the overall number has been declining as states move toward community-based alternatives.
Immigration Detention
ICE’s Enforcement and Removal Operations manages a separate civil detention system used to hold people during immigration proceedings or while awaiting removal.8U.S. Immigration and Customs Enforcement. Detention Management As of late 2025, roughly 212 ICE detention facilities were in active use.9USAFacts. How Many People Are Being Detained by ICE?
Ownership is layered. Some are Service Processing Centers owned and operated by the federal government. Others are Contract Detention Facilities owned by private corporations and leased to ICE. A large portion operate under Intergovernmental Service Agreements, where ICE rents bed space in local jails. That overlap means some ICE detainees sit in the same county jails already counted in the local jail figure. The detained population exceeded 60,000 people as of early 2026.
Tribal Jails
Tribal nations operate their own jail systems on reservation lands. A BJS survey counted 82 operating jail facilities in Indian country as of 2020, up from 68 in 2000.10Bureau of Justice Statistics. Jails in Indian Country, 2019-2020 They are generally small, with a combined population of about 2,430 people at midyear 2024.11Bureau of Justice Statistics. Jails in Indian Country, 2024
The Full Tally
Pulled together from the most recent government data for each category:
- State prisons: about 1,155 facilities (968 confinement, remainder community-based)
- Federal prisons: 122 institutions
- Private prisons: 411 facilities (also counted through their state and federal contracts)
- Local jails: roughly 2,900 to 3,100
- Juvenile facilities: about 1,323
- Immigration detention: around 212 active sites
- Tribal jails: 82
The combined figure lands somewhere north of 6,000 facilities. That total does not include military brigs, civil commitment centers for people deemed sexually dangerous, or psychiatric institutions with involuntary commitment authority. Some categories overlap, particularly where ICE rents bed space in county jails already counted separately. The system-wide annual cost of running all of it exceeds $180 billion.
Why the Number Keeps Moving
These counts are not static. Several states have been closing prisons in response to declining populations, budget pressure, or policy shifts. California has closed multiple prisons and deactivated individual units since 2023, with another facility slated for closure by fall 2026, saving an estimated $150 million per year in general fund spending.12California Department of Corrections and Rehabilitation. Reduction/Closure Information – Prison Closures California also fully closed its state juvenile justice division in 2023, shifting youth to county-level programs.
Immigration detention capacity has moved the other way, with both the number of sites and the daily detained population expanding significantly. State prisons are gradually shrinking, immigration detention is growing, and local jails remain roughly constant. The BJS prison census is only conducted every five to seven years, so the 1,677 figure already reflects conditions from 2019. By the time the next census is published, the map will have shifted again.