How to Find Out What Prison Someone Is In: BOP, State DOC, VINELink

To find out what prison someone is in, use the free inmate locator that matches the system holding them: the Federal Bureau of Prisons locator for federal inmates, the relevant state department of corrections search (or VINELink, which covers 48 states) for state inmates, the county sheriff’s booking roster for anyone recently arrested, and ICE’s Online Detainee Locator for people in immigration custody. Which tool you reach for first depends on what you already know about the arrest or sentence.

A quick vocabulary check saves time. Prisons hold people after sentencing. Jails hold people who are awaiting trial, recently booked, or serving short sentences. Someone arrested yesterday will not appear in a state prison database for weeks, and may never appear there if the case resolves in jail.

Start With the County Jail if the Arrest Was Recent

Most sheriff’s offices publish a searchable booking roster on their website, often updated within hours of an arrest. Search for the county sheriff’s office where the arrest likely happened and look for an “inmate search,” “who’s in jail,” or “booking log” link. You will typically need the person’s full name, though some systems also accept a date of birth. Results usually show current charges, bond amount, and booking date.

If you do not know which county to check, start with the county where the person lives or was last known to be. When the sheriff’s website does not offer online search, calling the jail’s booking desk and asking whether someone is in custody usually works. Staff can confirm whether a person is currently held there, though not every jurisdiction will share charges or release dates over the phone.

Federal Inmates: The BOP Locator

The Bureau of Prisons maintains a free inmate locator covering everyone in federal custody from 1982 to the present.{¹} You can search by name or by BOP Register Number. Results include the person’s current facility, age, sex, and projected release date.

The locator uses First Step Act recalculated sentences, so projected release dates may shift as federal time credits are applied.{¹} If someone shows as “Released” or “Not in BOP Custody” with no facility listed, they have left the federal system but could still be in state custody, on supervised release, or in a halfway house. Inmates housed in privately operated federal contract facilities do appear in the locator, because they remain in BOP custody even though the building is run by a private company.

Federal records before 1982 are outside the BOP locator’s reach. Older records, dating back to 1870 and including historic prisons like Alcatraz and Leavenworth, are held by the National Archives and Records Administration, which can produce copies if you supply the inmate’s name, approximate date of birth, race, and approximate dates of incarceration.{²}

State Inmates: Department of Corrections Searches

Every state’s department of corrections runs its own inmate search tool, and these are the primary resource for anyone serving a state sentence.{²} Most require the person’s full name, and some accept a date of birth or state-issued inmate number. Results typically include the housing facility, projected release date, and sometimes transfer history.

The depth of information varies. Some states show conviction details, mugshots, and disciplinary records. Others give you only a name, location, and release date. If you are not sure which state holds someone, USAGov maintains a directory of every state department of corrections with direct links.{²}

Expect a gap after sentencing. Someone recently sentenced may not appear in the state prison database for several weeks while they move from the county jail to a state reception center and then to their assigned facility. During that window, the county jail may show them as released while the state system has not yet picked them up. Calling the state corrections department directly often gets you further than the online tool during that gap.

VINELink Covers Both Jails and Prisons in 48 States

VINELink is a free service available in 48 states that lets you search for inmates across both jails and prisons from a single website.{³} It was originally built as a victim notification system, but it is open to anyone. Search by name, and the system returns matching results across participating facilities in that state. You can also register for automatic notifications when an inmate’s status changes, such as a transfer or release.

VINELink is especially useful when you do not know whether someone landed in a county jail or a state prison, since it pulls from both. It does not cover federal inmates or immigration detainees.

Immigration Detention: ICE’s Online Detainee Locator

People held by U.S. Immigration and Customs Enforcement will not appear in any state prison or BOP database. ICE runs its own Online Detainee Locator System at locator.ice.gov for anyone currently in ICE custody or who has been in Customs and Border Protection custody for more than 48 hours.{⁴}

You can search two ways. By A-Number: enter the person’s nine-digit Alien Registration Number along with country of birth, adding leading zeros if the number has fewer than nine digits. By name: enter first and last name with country of birth. The name search requires an exact match, so a misspelling or a missing hyphen returns no results.{⁴}

The ICE locator cannot search for anyone under 18. If you know which facility holds someone but need visiting hours or an address, ICE publishes a separate detention facility directory searchable by state or field office.{⁵} Contact the facility directly before visiting, since hours and restrictions change without much notice.

When the Databases Come Up Empty

If you have searched the BOP locator, the relevant state corrections database, VINELink, and local jail rosters without a match, a few explanations are worth considering. The person may be in transit between facilities, which creates a temporary records gap. They may have been transferred to a different state under an interstate corrections compact. They could be held under a different name, or have a common name that makes matching difficult. They may already have been released.

The most direct next step is calling the state department of corrections where the person was sentenced and asking a records clerk to look them up manually. Phone searches sometimes catch records the online tools miss, especially during transfers. If the person has a pending case, reaching their attorney or the public defender’s office that handled the case is another reliable route, since counsel of record usually knows where their client is being held.

Court Records as a Backup

When database searches come up empty, court records can fill in the gaps. Sentencing orders, commitment documents, and case dockets often identify the facility where someone was sent. Court records are most helpful when someone was recently convicted and has not yet appeared in a corrections database, or when you are trying to figure out which system, federal, state, or local, has jurisdiction.

Federal court documents are available through the Public Access to Court Electronic Records system, known as PACER.{} You can register at pacer.uscourts.gov, and you can also view records for free at public terminals in the clerk’s office of the court where the case was filed.{⁶}

State court records can be accessed in person at the courthouse where the case was tried, and many jurisdictions now offer online case search portals. You will generally need the person’s full name or a case number. Some records may be sealed, particularly those involving minors, ongoing investigations, or cases where a judge has restricted access.{⁶}

1
Federal Bureau of Prisons. Find an Inmate
2
USAGov. How to Look Up Prisoners and Prison Records
3
VINELink. VINELink
4
U.S. Immigration and Customs Enforcement. Online Detainee Locator System
5
U.S. Immigration and Customs Enforcement. Detention Facilities
6
United States Courts. Access to Court Proceedings