Prisons in Massachusetts fall into three systems: state prisons run by the Department of Correction, county jails and houses of correction run by 14 elected sheriffs, and one federal facility, FMC Devens in Ayer. Where a person is held depends almost entirely on the length of their sentence. A sentence longer than two and a half years goes to a state prison. A sentence of two and a half years or less, along with pretrial detention, stays at the county level. Federal custody is separate from both.
The Two-and-a-Half-Year Line
This threshold is the single most important sorting rule in the state’s correctional system. It determines which agency oversees the person, which facilities they can be sent to, what programming is available, and how release planning works. Anyone awaiting trial is also held by the county, regardless of the charge, until a sentence is imposed.
State Prisons Run by the Department of Correction
The Department of Correction is the state agency responsible for everyone serving a state prison sentence. It sits within the Executive Office of Public Safety and Security and handles security, classification, programming, and release planning. Under Chapter 124, Section 1 of the Massachusetts General Laws, the Commissioner of Correction designates and maintains state facilities, sets standards, and runs rehabilitation programs covering education, vocational training, and employment.1General Court of Massachusetts. Massachusetts Code Chapter 124 Section 1 – Powers and Duties of Commissioner of Correction
The DOC operates 13 facilities across the Commonwealth.2Mass.gov. Massachusetts Department of Correction Locations The major ones serve distinct populations.
Souza-Baranowski Correctional Center
Souza-Baranowski (SBCC) is the state’s primary maximum-security prison. It also houses the reception and diagnostic center where all newly committed men enter DOC custody. Every male inmate starts here for initial assessment before being assigned to a permanent facility.3Mass.gov. Souza-Baranowski Correctional Center
MCI-Norfolk and MCI-Shirley
MCI-Norfolk is the largest medium-security facility in the state, holding criminally sentenced men, and is known for a campus layout built around community-style living.4Mass.gov. MCI-Norfolk MCI-Shirley is also medium security for sentenced men and offers a range of educational and vocational programs.5Mass.gov. MCI-Shirley
MCI-Framingham
MCI-Framingham is the primary state facility for women serving state sentences. It provides medical care, mental health treatment, and programming built around the reentry challenges women face.
Massachusetts Treatment Center
The Massachusetts Treatment Center is a medium-security facility that holds two populations: criminally sentenced men identified as sex offenders, and individuals civilly committed as sexually dangerous persons. It provides intensive behavioral health programming for both.6Mass.gov. Massachusetts Treatment Center
Other Facilities
The Boston Pre-Release Center supports people transitioning toward release. Bridgewater State Hospital provides inpatient mental health treatment in a secure setting. The Lemuel Shattuck Hospital Correctional Unit handles acute medical needs. MASAC at Plymouth focuses on substance abuse treatment. MCI-Cedar Junction, historically a maximum-security prison, has ended its general population housing operations, and its reception and diagnostic functions have moved to Souza-Baranowski.7Mass.gov. Department of Correction Ends MCI-Cedar Junction Housing Operations and Dissolves Department Disciplinary Unit
How Someone Is Classified
Every person entering DOC custody is classified under 103 CMR 420. The regulation sets four security levels: maximum, medium, minimum, and pre-release. Classification boards weigh static factors that cannot change — the current offense, prior criminal history, any history of sex offense convictions — against dynamic factors such as disciplinary record, program completion, educational progress, and participation in drug treatment or vocational programming.8Mass.gov. 103 CMR 420.00 – Classification
Maximum security imposes the tightest restrictions on movement. Medium security allows more internal mobility and broader access to programs. Minimum and pre-release focus on reentry, with less restrictive environments, work-release eligibility, and stronger community connections. Reclassification reviews happen periodically, and a security level can move up or down based on behavior and program participation.
County Jails and Houses of Correction
All 14 Massachusetts counties operate their own jails and houses of correction under elected sheriffs. Chapter 126 of the General Laws provides the legal framework for these facilities and the sheriffs who run them.9General Court of Massachusetts. Massachusetts General Laws Chapter 126 – Jails, Houses of Correction and Reformation, and County Industrial Farms
County facilities hold two main groups: people awaiting trial who have not posted bail, and people sentenced to two and a half years or less. Because stays tend to be shorter, county programming focuses on stabilization, short-term services, and connections with local resources. Populations vary widely. Dukes County and Nantucket County house very few inmates compared with the larger operations in Suffolk, Essex, or Middlesex.
Pretrial detainees have distinct protections. Because they have not been convicted, detention cannot be used as punishment. They keep their Fifth Amendment right against self-incrimination, their Sixth Amendment right to counsel and a speedy trial, and their right to Miranda warnings before any custodial interrogation.
Federal Prison in Massachusetts
The only federal correctional facility in the state is FMC Devens, in Ayer. It is run by the Federal Bureau of Prisons, houses male inmates at an administrative security level, and operates as a correctional medical center for people with serious medical or mental health conditions.10Federal Bureau of Prisons. FMC Devens An adjacent minimum-security prison camp houses a smaller population of lower-risk inmates.11U.S. Department of Justice Office of the Inspector General. DOJ OIG Releases an Inspection of the BOP’s Federal Medical Center Devens There are no other federal prisons in Massachusetts; a federal sentence from a Massachusetts court will usually be served out of state.
Finding Someone in Custody
The Massachusetts DOC participates in VINELink for locating people in state custody. You can search at vinelink.com or call 866-277-7477. You will need the person’s full first and last name or their commitment number. This tool covers state DOC facilities only. County jails and federal facilities use separate search tools.12Mass.gov. Find an Inmate in a Massachusetts Prison
Visiting
Visiting a state prison requires advance approval. The incarcerated person must place each visitor’s name on their visitor list, and each prospective visitor must complete a Visitor Application Form and mail it to the specific institution. Both parties receive notice of approval or denial. The visitor list can be revised up to three times a year.13Mass.gov. Visiting an Inmate in a Massachusetts Prison
Maximum- and medium-security facilities allow up to 8 approved visitors per inmate. Minimum-security and pre-release facilities allow up to 10. Children under 18 do not need pre-approval but must be accompanied by a parent or legal guardian already on the approved list. A non-parent adult bringing a child needs a completed Minor Consent Form and the superintendent’s approval.13Mass.gov. Visiting an Inmate in a Massachusetts Prison
Newly committed inmates can receive up to two visitors while their permanent list is processed, but those temporary visitors go inactive after 40 business days if not formally approved. Visitors with prior felony convictions face waiting periods: immediate family members must wait six months after their own release, and non-family visitors must wait a full year. Drug-detection dogs screen visitors at entry. If a dog alerts, visitors who refuse a search are turned away, and anyone found with drugs faces a permanent ban and possible criminal charges.13Mass.gov. Visiting an Inmate in a Massachusetts Prison
Video visits are available but need the same pre-approval. County jails set their own visiting rules through the sheriff’s office, and those rules may differ significantly from state DOC policies.
Phone, Email, and Money
Inmates in state prisons have phone access, with calls billed at a flat per-minute rate that depends on whether the call is in-state or out of state. Families can set up a phone account or add funds through Securus Technologies.14Mass.gov. Contact an Inmate in Massachusetts
Email runs through a service called Corrlinks. Inmates cannot start the conversation. You send the first message, and they can reply. Each email costs $0.25. Messages flagged by DOC staff for objectionable content are rejected with no refund, and the inmate may face discipline.14Mass.gov. Contact an Inmate in Massachusetts
To put money on an inmate’s canteen account, you can deposit online through Access Corrections, by phone at 1-866-345-1884, by mailing a check or money order, or in person at select locations. All deposits must be in U.S. funds. Money orders over $200 and all personal checks receive a 7-business-day hold when deposited in person, and mailed checks face a 10-day hold after processing before funds reach the account. A lock box service for checks and money orders is available at no fee.15Mass.gov. Deposit Money to an Inmate’s Personal Account
Rights Inside
Incarcerated people keep certain constitutional protections. When facing serious discipline, particularly the loss of good-time credits, an inmate is entitled to written notice of the accusation, a hearing before an impartial officer, and a chance to present their side. The evidentiary standard is low: a finding needs only “some evidence” to support it, far less than a courtroom requires.
All Massachusetts correctional facilities, both state and county, are covered by the Prison Rape Elimination Act (PREA). Federal PREA standards require every facility to maintain a written zero-tolerance policy toward sexual abuse and harassment, designate a PREA compliance manager, and set clear procedures for preventing, detecting, and responding to incidents.16PREA Resource Center. Prisons and Jail Standards
Reentry and Parole
The DOC runs several reentry programs. Work release is open to inmates within 18 months of release or parole eligibility who meet certain criteria. The Massachusetts Parole Board, which operates independently from the DOC, runs regional reentry centers across the state to help people transition back into the community with housing, employment, and support services.17Mass.gov. Inmate Reentry Programs