To find out if someone is incarcerated, search the free official locator for the jurisdiction most likely holding them: the county sheriff’s jail roster for a recent arrest or short sentence, the state Department of Corrections search for someone serving a longer sentence, the Bureau of Prisons locator for federal custody, or the ICE detainee locator for immigration detention. Every one of these tools is free, and most only require a full name.
What to Have Ready Before You Search
The single most useful piece of information is the person’s full legal name as it appears on government records, including any middle name or suffix. If they’ve ever used a different name, try that too, since bookings sometimes record aliases or maiden names. A date of birth helps filter results when a common name returns dozens of matches.
An identification number makes the search nearly instant. At the federal level, a BOP register number, an FBI number, or an INS number pulls up a specific record directly. State systems use their own numbering, often called a State Identification Number or a booking number assigned during intake. You rarely need all of these. One solid identifier plus a name is enough for most databases.
County and City Jails
People awaiting trial or serving short sentences are usually held in a county or city jail. Start with the sheriff’s office or jail website for the county where you believe the arrest happened. Most of these sites publish a current jail roster searchable by name. Enter the last name, add a first name if the roster allows, and review the results. Each listing typically shows a booking photo, the charges, the booking date, and a bond amount if one has been set.
Someone who was just arrested may not appear right away. Booking involves fingerprinting, photographing, and entering data into the jail’s management system, which can take several hours. If you know an arrest happened within the last day or two but nothing shows up online, call the jail’s main line and ask the booking desk directly.
State Prisons
If the person has already been sentenced to state prison, search the state’s Department of Corrections website instead. Every state runs an offender search tool that covers all facilities within its prison system. These results tend to be more detailed than jail rosters. You can usually see the facility name, the projected release date, the original charges, and the case number. Some states also show transfer history between institutions.
Federal Inmates
The Bureau of Prisons runs a free inmate locator at bop.gov/inmateloc that covers everyone currently in federal custody, plus anyone released from a federal facility after 1982.1Federal Bureau of Prisons. Federal Inmates – BOP Inmate Locator You can search two ways:
- By number: enter a BOP register number, DCDC number, FBI number, or INS number for an exact match.
- By name: enter a first and last name, then narrow results by adding the person’s race, approximate age, or sex.
Results show the person’s name, register number, age, sex, release date, and current facility location. The BOP is charged with the management of all federal correctional institutions and the safekeeping of everyone in federal custody.2Office of the Law Revision Counsel. 18 USC 4042 – Duties of Bureau of Prisons
One limitation: the online locator only contains records for people released after 1982. Older records are being transferred to the National Archives and Records Administration. If you’re looking for someone who left federal custody before 1982, contact NARA directly rather than relying on the BOP website.3Federal Bureau of Prisons. About Federal Inmate Records
Immigration Detainees
People held by Immigration and Customs Enforcement won’t appear in state prison or county jail databases, even if they’re physically housed in a local facility under contract. ICE maintains a separate Online Detainee Locator System at locator.ice.gov covering anyone currently in ICE custody or who has been in Customs and Border Protection custody for more than 48 hours.4Immigration and Customs Enforcement. Online Detainee Locator System
You can search by A-Number (the nine-digit alien registration number) or by the detainee’s first name, last name, and country of birth. The name search requires an exact match, so a misspelling or a missing hyphen in a surname will return no results. The system does not cover anyone under 18.4Immigration and Customs Enforcement. Online Detainee Locator System
Sign Up for VINE Alerts Once You’ve Located Someone
Once you’ve found someone in a local or state facility, you can sign up for automatic notifications through the Victim Information and Notification Everyday system, known as VINE. This free service is available in 48 states and covers roughly 2,900 facilities.5VINELink. VINELink Register at vinelink.com by selecting a state and searching for the person’s name within participating facilities.
After locating the record, choose how you want to be contacted: phone call, text message, or email. The system then monitors the facility’s internal records and sends an alert the moment something changes, whether that’s a release, a transfer to a different facility, or an escape. Registration is anonymous, and you can sign up for alerts on more than one person. The service runs around the clock.
VINE requires you to search one state at a time. If you’re unsure which state someone is being held in, check multiple states individually through the VINELink portal.
When the Online Tools Aren’t Enough
Online search tools cover current custody status and basic case details. If you need more, the Freedom of Information Act gives you the right to request records from any federal agency, including the Bureau of Prisons, as long as the records don’t fall under a specific exemption.6Department of Justice. 5 USC 552 You submit a written request describing the records you want, and the agency must respond.
Not everything gets released. Law enforcement records compiled for investigative purposes can be withheld if disclosure would interfere with ongoing proceedings or reveal confidential sources.7eCFR. FOIA Exemption 7 – Law Enforcement In practice, FOIA is most useful for getting details that go beyond what the online locator shows, like disciplinary records or transfer histories, rather than simply confirming whether someone is incarcerated.
Skip Paid Lookup Sites
A quick internet search will return plenty of third-party websites that charge fees for publicly available information. Some are middlemen reselling free data. Others are outright scams. Fake jail websites have been flagged by state consumer protection offices for collecting personal information and payment details without delivering anything useful. Never pay for basic inmate lookup information. Every legitimate corrections agency publishes its data for free. If a site asks for a credit card before showing you results, close the tab and go directly to the official agency website. When in doubt, call the jail or prison.