What FCI Danbury Is and Who It Holds
FCI Danbury is run by the Federal Bureau of Prisons. The Bureau of Prisons, or BOP, is the federal agency that holds people convicted or held under federal law. The institution sits in Danbury, in Fairfield County, and includes a satellite camp beside the main facility. It holds federal sentenced inmates and people in federal custody. It does not hold ordinary Stamford arrestees. It does not hold Connecticut Department of Correction inmates either.
This distinction trips up a lot of people. A person arrested by Stamford Police is processed by the city, then routed through the courts and, if held, into Connecticut DOC custody. None of that touches FCI Danbury. The federal system is separate. A Stamford case reaches FCI Danbury only when federal charges or a federal sentence put the person in BOP hands. Until that happens, looking here returns nothing useful.
Because this is a federal site, the lookup tool, the visiting rules, and the record details all come from the Bureau of Prisons, not from any Connecticut agency. The rest of this page explains how to search the right system and how federal custody differs from state and local custody.
When a Stamford Case Becomes Federal Custody
Most arrests in Stamford stay in the state system. Federal custody starts in a different way. A person faces federal charges, or a federal judge imposes a federal sentence, and the case moves into the federal track. At that point the Bureau of Prisons may hold the person, and FCI Danbury can become the facility. The reason a case is federal varies. It may involve a federal crime, a federal agency, or a charge filed in U.S. District Court rather than Connecticut Superior Court.
There is a catch with timing. Many federal defendants who are still awaiting trial do not appear in BOP records at all. Before sentencing, a federal pretrial detainee is often in the custody of the U.S. Marshals Service. The Marshals frequently house such people in contract beds, sometimes inside a state or local jail. That person may not show up in the BOP Inmate Locator yet. The BOP database is for people in Bureau of Prisons custody, so a pretrial federal defendant can be missing from it.
For pretrial federal custody that does not appear in BOP, the federal court and the U.S. Marshals Service are the right channels. Reach them through official federal channels rather than a state or county office. The BOP locator becomes reliable once the person is actually in Bureau of Prisons custody after sentencing.
Note: Confirm custody and current visiting rules directly with FCI Danbury or the Bureau of Prisons before you travel, because federal status and schedules can change quickly.
How to Search the BOP Inmate Locator
Federal inmates are found through the BOP Inmate Locator. The locator covers federal inmates from 1982 to the present. It is updated daily from the Bureau of Prisons inmate database. You can search two ways. One way uses a known number. The other uses a name plus narrowing details. The number search is faster and more exact when you have the right identifier.
The number search accepts several identifier types. You pick the type, then enter the number. The name search asks for the first, middle, and last name, and lets you narrow by race, age, and sex. The Bureau of Prisons notes that exact name matching may be required, so a small spelling difference can hide a real record. The official BOP locator records page explains the daily updates and the exact-name behavior.
To run a federal inmate search, follow these steps.
- Open the BOP Inmate Locator at bop.gov and choose Find By Number or Find By Name.
- For a number search, select the number type, then type the identifier exactly.
- For a name search, enter the first and last name, then add race, age, or sex to narrow the list.
- Review the result for the name, register number, and the listed location to confirm the right person.
The BOP locator search fields are shown below.
| Field | Type | Required | Notes |
|---|---|---|---|
| Number type | radio/dropdown | For number search | BOP Register Number, DCDC Number, FBI Number, or INS Number. |
| Number | text | For number search | Enter the selected identifier. |
| First | text | For name search | Exact name matching may be required. |
| Middle | text | Optional | Used in name search. |
| Last | text | For name search | Used in name search. |
| Race | dropdown | Optional | Narrows the results. |
| Age | text | Optional | Narrows the results. |
| Sex | dropdown | Optional | Narrows the results. |
A look at the live locator helps before you start. The official BOP locator page shows the number and name search tabs side by side.

The screen makes it clear which fields belong to a number search and which belong to a name search, so you can pick the path that fits what you already know about the person.
What a BOP Locator Result Shows for FCI Danbury Inmates
A federal locator result is short and factual. It does not list charges, bond, or housing unit the way a county jail roster might. The Bureau of Prisons publishes a fixed set of fields drawn from its inmate database. Those fields are enough to confirm identity and find where the person is held.
The result fields are listed here.
| Field | What It Shows |
|---|---|
| Name | The inmate's name as held in BOP records. |
| Register Number | The unique BOP identifier for that person. |
| Age | The inmate's age. |
| Race | The race listed in the record. |
| Sex | The sex listed in the record. |
| Release Date | The release date, which First Step Act recalculation can change. |
| Location | The facility holding the person, such as FCI Danbury. |
The release date deserves care. First Step Act credit recalculation can shift a federal release date, so the figure shown may not be fully current. A result that reads "Released" or "Not in BOP Custody" does not always mean the person is free. It can mean the person is held elsewhere, or is under federal supervision outside Bureau of Prisons custody. The BOP locator does not publish a federal mugshot, so no booking photo appears with the result.
Why an FCI Danbury Inmate May Not Appear
A blank or "not found" result does not always mean the person is not in custody. Several normal reasons explain a missing record. The most common is timing in the federal pretrial stage. A federal defendant awaiting trial is often in U.S. Marshals custody or a contract bed, and may not be in the BOP database at all. The locator covers Bureau of Prisons custody, not every form of federal holding.
Other reasons are worth checking too.
- The record predates 1982, which the BOP locator does not cover.
- The name was spelled differently, and exact name matching hid the match.
- The person was released or moved to federal supervision, so the result reads "Not in BOP Custody."
- The person is actually in state custody, which appears in the Connecticut DOC inmate search instead.
- The person is in immigration custody, which uses a separate federal system.
When the BOP search fails and you believe the case is federal, try a number search if any identifier is known, then widen a name search by removing the narrowing fields. If the person is a pretrial federal defendant, the federal court and the U.S. Marshals Service are the better contacts. The jail-inmate-records page explains the state-side fallback chain in more depth.
ICE Detainees and the Online Detainee Locator
Immigration custody is a separate federal lane again. People held by Immigration and Customs Enforcement are not in the BOP locator and not in the Connecticut DOC database. Connecticut DOC states that offenders held on behalf of ICE are excluded from its inmate information. To find someone in immigration custody, use the ICE Online Detainee Locator System. The Department of Homeland Security describes the ODLS as a public, web-based system that needs no account, as detailed in its privacy impact assessment.
The ODLS offers two search modes. One uses the A-Number, a nine-digit identifier, plus the country of birth. The other uses biographical details: first and last name, country of birth, and date of birth. The ICE search fields are shown below.
| Field | Type | Required | Notes |
|---|---|---|---|
| A-Number | text | For A-number search | Nine digits; add leading zeroes if needed. |
| Country of Birth | dropdown | Yes | Required for both search modes. |
| First Name | text | For bio search | Exact name matters. |
| Last Name | text | For bio search | Exact name matters. |
| Month / Day / Year | date fields | For bio search | Date of birth. |
The ODLS does not return records for people under 18. It covers people currently in ICE custody, or in Customs and Border Protection custody for more than 48 hours. No official ICE detention facility sits in Stamford or anywhere in Fairfield County. ICE publishes its own detention facilities list for the locations it does use.
Note: ICE custody, federal BOP custody, and Connecticut state custody are three separate systems, so check the one that matches the person's situation.
Federal, State, and Local Custody in Connecticut
Readers confuse the custody systems constantly, and the confusion costs time. Stamford has no county sheriff jail, because Connecticut unified its county jails and state prisons under the state Department of Correction in 1968. So custody after a Stamford arrest sits in the state system, while federal and immigration custody sit elsewhere. Each system has its own holder and its own lookup tool.
The table below maps who holds whom and where to look.
| Custody | Who It Holds | Where to Look |
|---|---|---|
| Stamford Police | People just arrested or processed by city police before release or transfer | Call Stamford Police; no public roster exists |
| Connecticut DOC | Pretrial and sentenced state inmates, such as those at Bridgeport Correctional Center | Connecticut DOC inmate search |
| Federal BOP | Federal sentenced inmates and people in Bureau of Prisons custody | BOP Inmate Locator |
| ICE | People in immigration custody | ICE Online Detainee Locator System |
The practical rule is simple. Check the system that matches the agency holding the person. A person held in state custody appears in the Connecticut DOC search, and many Stamford-area state inmates are held at Bridgeport Correctional Center. A federal inmate appears in the BOP locator. An immigration detainee appears in the ICE ODLS. Searching the wrong system returns nothing, even when the person is plainly in custody somewhere.
FCI Danbury Address and Contact
The Bureau of Prisons keeps an official page for the facility, which is the best source for current details. The address and phone come from official BOP materials. Confirm anything time-sensitive with the facility before relying on it.
Federal Correctional Institution Danbury
33 1/2 Pembroke Station, Route 37
Danbury, CT 06811
(203) 743-6471
Federal Bureau of Prisons facility
For facility-specific guidance, including how to confirm an inmate's location, the official BOP page for FCI Danbury is the authoritative reference. It carries the contact details and the institution's own instructions.
Visiting and Communication at FCI Danbury
Federal visiting, mail, phone, and money rules are set by the Bureau of Prisons, not by Connecticut DOC. They differ from state prison rules, so do not assume the Connecticut process applies here. Federal facilities require an approved visitor process, and schedules and procedures are specific to each institution. The reliable source is the facility's own guidance.
Use the official FCI Danbury page for the current visiting schedule, approved-visitor steps, identification rules, and instructions for mail and inmate funds. Because federal procedures and visiting days can change, verify the current rules on that official page or by phone before you make any plans. A federal inmate's location can also change between facilities, so confirm the person is still held at FCI Danbury first.
Federal Records and No Public Mugshots
Federal records work differently from a county roster. The BOP locator gives a confirmation of custody and a location, not a full case file. The federal courts, not the Bureau of Prisons, hold the charging and sentencing record for a federal case. For a Connecticut state custody record, the Connecticut inmate information search is the right tool instead.
One point matters for anyone hoping to find a photo. The Bureau of Prisons does not publish federal mugshots through the inmate locator. The result shows the data fields listed above, and nothing more. The ICE ODLS is also a location tool, not a photo gallery. So for FCI Danbury and any federal or immigration custody, expect a records lookup rather than a booking-photo page.