The Federal Bureau of Prisons of the United States Department of Justice classifies prisons into seven categories:

United States penitentiaries Federal correctional institutions Private correctional institutions Federal prison camps Administrative facilities Federal correctional complexes Former Federal facilities

This list does not include military prisons, halfway houses, or prisons, jails, and other facilities operated by state or local governments that contract with the Federal Bureau of Prisons. It also does not include facilities operated by Immigration and Customs Enforcement (ICE).

United States penitentiaries Most United States penitentiaries (USPs) are high-security facilities, which have highly secured perimeters with walls or reinforced fences, multiple and single-occupant cell housing, the highest staff-to-inmate ratio, and close control of inmate movement. The most restrictive facility in the federal prison system is USP Florence ADMAX, the federal supermax prison, which holds inmates who are considered the most dangerous and in need of the tightest controls.

USP Leavenworth, USP Lewisburg, USP Lompoc, and USP Marion were originally operated as high-security facilities but have since been downgraded to medium-security facilities (former USP Lompoc has again been downgraded, to low-security). USP Atlanta, also a former high-security facility, is presently a low-security facility with the primary purpose of holding inmates until they are transferred to other institutions. In 2024, all former USP facilities were renamed to FCI facilities to more accurately reflect their security level. Many current USPs include minimum-security satellite camps on the same property and under the same administration as the higher-security units.

Name Location Inmate gender Security class Population (2025) United States Penitentiary, Administrative Maximum Facility Colorado Male Administrative (Maximum) 382 United States Penitentiary, Allenwood Pennsylvania High 304 United States Penitentiary, Atwater California 1,103 United States Penitentiary, Beaumont Texas 1,346 United States Penitentiary, Big Sandy Kentucky 1,236 United States Penitentiary, Canaan Pennsylvania 1,379 United States Penitentiary, Coleman Florida 1,345 (I)982 (II) United States Penitentiary, Florence Colorado 786 United States Penitentiary, Hazelton West Virginia 1,398 United States Penitentiary, Lee Virginia 1,198 United States Penitentiary, McCreary Kentucky 1,355 United States Penitentiary, Pollock Louisiana 855 United States Penitentiary, Terre Haute Indiana 1,136 United States Penitentiary, Tucson Arizona 975 United States Penitentiary, Victorville California 1,119

Federal correctional institutions Federal correctional institutions (FCIs) are medium- and low-security facilities, which have strengthened perimeters (often double fences with electronic detection systems), mostly cell-type housing, a wide variety of work and treatment programs. FCI Terre Haute and FCI Marion contain highly restrictive communication management units, which hold inmates under stricter controls.

Name Location Inmate gender Security class Population (2025) Federal Correctional Institution, Aliceville Alabama Female Low 1,137 Federal Correctional Institution, Allenwood Low Pennsylvania Male 1,030 Federal Correctional Institution, Allenwood Medium Medium 1,126 Federal Correctional Institution, Atlanta GeorgiaLow 1,854 Federal Correctional Institution, Ashland Kentucky 1,163 Federal Correctional Institution, Bastrop Texas 1,013 Federal Correctional Institution, Beaumont Low 1,615 Federal Correctional Institution, Beaumont Medium Texas Medium 1,182 Federal Correctional Institution, Beckley West Virginia 1,534 Federal Correctional Institution, Bennettsville South Carolina 1,515 Federal Correctional Institution, Berlin New Hampshire 805 Federal Correctional Institution, Big Spring Texas Low 496 Federal Correctional Institution, Butner Low North Carolina 1,010 Federal Correctional Institution, Butner Medium I Medium 533 Federal Correctional Institution, Butner Medium II 1,549 Federal Correctional Institution, Coleman Low Florida Mixed Low 1,601 Federal Correctional Institution, Coleman Medium Florida Male Medium 1,496 Federal Correctional Institution, Cumberland Maryland 884 Federal Correctional Institution, Danbury Connecticut Mixed Low 1,132 Federal Correctional Institution, Edgefield South Carolina Male Medium 1,251 Federal Correctional Institution, El Reno Oklahoma 1,001 Federal Correctional Institution, Elkton Ohio Low 1,605 Federal Correctional Institution, Englewood Colorado 960 Federal Correctional Institution, Estill South Carolina Medium 102 Federal Correctional Institution, Fairton New Jersey 728 Federal Correctional Institution, Florence Colorado 1,044 Federal Correctional Institution, Forrest City Low Arkansas Low 1,621 Federal Correctional Institution, Forrest City Medium Medium 1,618 Federal Correctional Institution, Fort Dix New Jersey Low 3,859 Federal Correctional Institution, Gilmer West Virginia Medium 1,177 Federal Correctional Institution, Greenville Illinois Mixed 1,177 Federal Correctional Institution, Hazelton West Virginia 1,537 Federal Correctional Institution, Herlong California Male 865 Federal Correctional Institution, Jesup Georgia 1,055 Federal Correctional Institution, La Tuna Texas Low 550 Federal Correctional Institution, LeavenworthKansasMedium 1,405Federal Correctional Institution, LewisburgPennsylvania 520 Federal Correctional Institution, Lompoc I California Low 886 Federal Correctional Institution, Lompoc II California 1,924 Federal Correctional Institution, Loretto Pennsylvania 781 Federal Correctional Institution, Manchester Kentucky Medium 1,009 Federal Correctional Institution, Marianna Florida Mixed 890 Federal Correctional Institution, MarionIllinoisMale 1,005 Federal Correctional Institution, McDowell West Virginia 1,483 Federal Correctional Institution, McKean Pennsylvania 919 Federal Correctional Institution, Memphis Tennessee Low 996 Federal Correctional Institution, Mendota California Medium 628 Federal Correctional Institution, Miami Florida Low 824 Federal Correctional Institution, Milan Michigan 1,536 Federal Correctional Institution, Oakdale I Louisiana Low 971 Federal Correctional Institution, Oakdale II 994 Federal Correctional Institution, Otisville New York Medium 746 Federal Correctional Institution, Oxford Wisconsin Low 1,157 Federal Correctional Institution, Pekin Illinois Mixed Medium 1,031 Federal Correctional Institution, Petersburg Low Virginia Male Low 467 Federal Correctional Institution, Petersburg Medium Medium 1,654 Federal Correctional Institution, Phoenix Arizona Mixed 853 Federal Correctional Institution, Pollock Louisiana Male 1,439 Federal Correctional Institution, Ray Brook New York 856 Federal Correctional Institution, Safford Arizona Low 663 Federal Correctional Institution, Sandstone Minnesota 1,233 Federal Correctional Institution, Schuylkill Pennsylvania Medium 1,002 Federal Correctional Institution, Seagoville Texas Low 1,357 Federal Correctional Institution, Sheridan Oregon Medium 1,240 Federal Correctional Institution, Talladega Alabama 958 Federal Correctional Institution, Tallahassee Florida Mixed Low 1,186 Federal Correctional Institution, Terminal Island California Male 937 Federal Correctional Institution, Terre Haute Indiana Male Lisa Montgomery was transferred to FCI Terre Haute on January 11, 2021 and resided in its execution facility under solitary confinement for two days. Montgomery was executed by lethal injection on January 13, 2021 after President Donald Trump refused her request for clemency. Medium 1,112 Federal Correctional Institution, Texarkana Texas Male Low 1,108 Federal Correctional Institution, Three Rivers Texas Medium 1,058 Federal Correctional Institution, ThomsonIllinoisLow 1,967 Federal Correctional Institution, Tucson Arizona Mixed Medium 433 Federal Correctional Institution, Victorville Medium I California Male Medium1,340 Federal Correctional Institution, Victorville Medium II Medium1,254 Federal Correctional Institution, Waseca Minnesota Female Low 855 Federal Correctional Institution, Williamsburg South Carolina Male Medium 1,357 Federal Correctional Institution, Yazoo City Low I Mississippi Low 1,566 Federal Correctional Institution, Yazoo City Low II Mississippi Low 1,549 Federal Correctional Institution, Yazoo City Medium Mississippi Male Medium 1,498

Federal prison camps Federal prison camps (FPCs) are minimum-security facilities, which have dormitory housing, a relatively low staff-to-inmate ratio, and limited or no perimeter fencing. These institutions are work- and program-oriented. Many are located adjacent to larger institutions or on military bases, where inmates help serve the labor needs of the larger institution or base.

Name Location Inmate gender Security class Population (2025) Federal Prison Camp, Alderson West Virginia Female Minimum 587 Federal Prison Camp, Bryan Texas 647 Federal Prison Camp, Duluth Minnesota Male 188 Federal Prison Camp, Montgomery Alabama 863 Federal Prison Camp, MorgantownWest Virginia166 Federal Prison Camp, Pensacola Florida 434 Federal Prison Camp, VictorvilleCaliforniaFemale216 Federal Prison Camp, Yankton South Dakota Male 520

Private correctional institutions In August 2016, Justice Department officials announced that the FBOP would be phasing out its use of contracted facilities, on the grounds that private prisons provide less safe and less effective services with no substantial cost savings. However, under the Trump administration in 2017, the Justice Department rescinded this phaseout, stating that it would re-implement its usage of private correctional facilities.

Most of these institutions are operated by the GEO Group, Inc., the exception being McRae Correctional Institution, operated by CoreCivic.

Name Location Correctional Institution, Big Spring Texas Correctional Institution, Big Spring (Flightline) Correctional Institution, Great Plains Oklahoma Correctional Institution, McRae Georgia Correctional Institution, North Lake Michigan Correctional Institution, Reeves I & II Texas Correctional Institution, Reeves III

Administrative facilities Administrative facilities are institutions with special missions, such as the detention of pretrial offenders; the treatment of inmates with serious or chronic medical problems; or the containment of extremely dangerous, violent, or escape-prone inmates. Administrative facilities include metropolitan correctional centers (MCCs), metropolitan detention centers (MDCs), federal detention centers (FDCs), federal medical centers (FMCs), the Federal Transfer Center (FTC), and the Medical Center for Federal Prisoners (MCFP), all of which are capable of holding inmates in all security categories.

Federal Detention Facilities

Name Location Inmate gender Population (2025) Federal Detention Center, Honolulu Hawaii Mixed 294 Federal Detention Center, Houston Texas 855 Federal Detention Center, Miami Florida 1,428 Federal Detention Center, Philadelphia Pennsylvania 909 Federal Detention Center, SeaTac Washington 785 Metropolitan Correctional Center, Chicago Illinois 506 Metropolitan Correctional Center, San Diego California 522 Metropolitan Detention Center, Brooklyn New York 1,328 Metropolitan Detention Center, Guaynabo Puerto Rico 1,053 Metropolitan Detention Center, Los Angeles California 950

Federal Medical Centers

Name Location Inmate gender Population (2025) Federal Medical Center, Butner North Carolina Male 830 Federal Medical Center, Carswell Texas Female 982 Federal Medical Center, Devens Massachusetts Male 1,063 Federal Medical Center, Fort Worth Texas 1,513 Federal Medical Center, Lexington Kentucky Mixed 1,058 Federal Medical Center, Rochester Minnesota Male 811 Medical Center for Federal Prisoners, Springfield Missouri 1,068

Federal Transfer Centers