Federal Prison Security Levels

The Federal Bureau of Prisons operates its institutions at five security levels, minimum, low, medium, high, and administrative, distinguished by the presence of external patrols, perimeter barriers, internal housing type, and staff-to-inmate ratio, with each level designed to confine people in the least restrictive setting appropriate to their security needs. Where a specific person is designated within that system depends on a points-based classification review, not a personal choice.

Overview

Most people outside the system use "camp" as shorthand for minimum security, but the Bureau's own terminology is broader and slightly different, and understanding the five official categories, plus how facilities combine them, explains a lot about how the federal system is physically organized.

Minimum Security (Camps)

Minimum security institutions, known as Federal Prison Camps (FPCs), have dormitory housing, a relatively low staff-to-inmate ratio, and limited or no perimeter fencing. They are work- and program-oriented, and many Bureau institutions maintain a small minimum-security camp, often called a Satellite Prison Camp (SCP), adjacent to a higher-security main facility. Camp residents frequently work off-site or provide labor to the main institution.

Low Security

Low security Federal Correctional Institutions (FCIs) have double-fenced perimeters, mostly dormitory or cubicle housing, and strong work and program components. The staff-to-inmate ratio is higher than at a minimum-security camp. A handful of institutions, such as FCI Elkton and FCI Jesup, maintain a small Federal Satellite Low security facility adjacent to the main institution.

Medium Security

Medium security FCIs, and some United States Penitentiaries designated to house medium-security inmates, have strengthened perimeters, often double fences with electronic detection systems, mostly cell-type housing, a wide variety of work and treatment programs, and even greater internal controls and staff-to-inmate ratios than low-security facilities.

High Security

High security institutions, known as United States Penitentiaries (USPs), have highly secured perimeters featuring walls or reinforced fences, multiple- and single-occupant cell housing, the highest staff-to-inmate ratio in the system, and close control of inmate movement.

Administrative Facilities

Administrative facilities serve special missions rather than a single security tier: pretrial detention, treatment of inmates with serious or chronic medical conditions, or containment of extremely dangerous, violent, or escape-prone individuals. This category includes Metropolitan Correctional Centers, Metropolitan Detention Centers, Federal Detention Centers, Federal Medical Centers, the Federal Transfer Center, the Medical Center for Federal Prisoners, and the Administrative-Maximum Security Penitentiary, better known as ADX Florence. With the exception of ADX, administrative facilities are built to hold inmates across all security categories at once.

Federal Correctional Complexes

Where institutions of different security levels sit close together and share a single perimeter or campus, the Bureau designates the group a Federal Correctional Complex (FCC). Complexes let staff move between security levels for training and enable resource-sharing and emergency response across facilities that would otherwise operate in isolation.

Why Security Level Matters Day to Day

Security level shapes far more than which fence surrounds a facility. Work opportunities differ sharply by level; camps and low-security institutions generally offer the widest range of outside work details and UNICOR factory jobs, while high-security penitentiaries run more restricted, closely supervised programming. Visiting rules, movement inside the facility, and eligibility for certain programs, including some tracks of the Residential Drug Abuse Program, can also vary by the security level and specific institution a person is designated to. Most people moving toward the end of a sentence hope for a transfer to a lower security level, since lower-security placement generally means more program access and, eventually, an easier path toward prerelease placement.

The Bureau operates 118 prison institutions nationwide across these five levels, plus the administrative facilities that sit outside the ordinary tier system, and staffs them around the clock.

How Someone Is Assigned a Security Level

Security level is not self-reported or chosen. Under 18 U.S.C. § 3621(b), the Bureau designates the place of a prisoner's confinement considering the resources of the facility, the nature and circumstances of the offense, the person's history and characteristics, any sentencing court recommendation, and applicable Sentencing Commission policy statements, subject to bed availability and the Bureau's own security concerns. The Bureau's classification regulations, at 28 C.F.R. Part 524, govern the underlying custody and classification review that produces a security score and, from it, an institution assignment. A fuller account of that designation process is at Federal Prison Designation.

A person's security level is not necessarily fixed for the life of the sentence. Good behavior, program completion, and periodic reclassification reviews can move someone to a lower security level over time, while disciplinary infractions can push a classification the other direction.

Frequently Asked Questions

Q: What are the federal prison security levels?

The Bureau of Prisons operates five security levels: minimum (camps), low, medium, high, and administrative. Each level is defined by perimeter security, housing type, and staff-to-inmate ratio, with minimum security camps having little or no fencing and high-security penitentiaries having walls or reinforced fences and close control of movement.

Q: What is the difference between a federal camp and a low-security FCI?

A camp (minimum security) has dormitory housing and little or no perimeter fencing, while a low-security FCI has a double-fenced perimeter and mostly dormitory or cubicle housing. Camps generally have the lowest staff-to-inmate ratio in the system; low-security facilities have a somewhat higher one.

Q: Who decides which security level an inmate goes to?

The Bureau of Prisons, not the sentencing court or the individual, designates the place of confinement under 18 U.S.C. § 3621(b), based on a classification review that weighs the offense, criminal history, medical and security needs, and facility resources, governed by regulations at 28 C.F.R. Part 524.

Q: What is an administrative security facility?

Administrative facilities are built around a special mission rather than a single security tier, including pretrial detention centers, medical centers, and the Administrative-Maximum facility (ADX Florence). Except for ADX, they can hold inmates of any security classification.

Q: Can a federal inmate's security level change during their sentence?

Yes. Periodic classification reviews can lower a person's security level based on good conduct and program completion, or raise it following a serious disciplinary infraction.