The Carroll County Inmate Population
The Carroll County inmate population is split between two very different systems. The Carroll County Correctional Facility in Mount Carroll is the local jail run by the Carroll County Sheriff's Office. It holds adults booked on local arrests, people waiting for court in Carroll County criminal cases, and short-sentence detainees who remain in county custody. FCI Thomson is also in Carroll County, but it is a Federal Bureau of Prisons institution. It holds male federal inmates and uses the BOP inmate locator, not the sheriff's office or any county jail list.
That split matters for every Carroll County inmate search. A person booked after a local arrest may be confirmed through the jail phone, a sheriff records request, or a court case filed with the Circuit Clerk. A person sentenced to Illinois prison leaves the county-jail count and moves to the Illinois Department of Corrections Individual in Custody Search. A person at FCI Thomson belongs to the federal population and is searched through the BOP inmate locator. Immigration detention is separate again through ICE ODLS.
The Carroll County Sheriff's Office page identifies Sheriff Ryan Kloepping and Chief Deputy Ryan Lambert. The office operates the jail, dispatch, court security, and local law-enforcement functions. The sheriff's public pages give contact points, but the research did not locate an official online county jail roster.
The sheriff's office page is the public starting point for local custody contacts.
The screenshot supports the local distinction between sheriff-run jail custody and the outside state or federal locators used after transfer.
Carroll County Inmate Population Statistics
The most current sourced local jail count in the research comes from the Illinois Department of Corrections 2024 jail inspection. IDOC inspected the Carroll County jail on May 14, 2024 and reported 25 rated beds with 5 people held that day. That was not an average daily population figure. It was an inspection-date count, so it should be read as a point-in-time jail population, not a live roster. Federal counts are much larger because FCI Thomson is a federal prison complex, not a county jail.
| Measure | Figure | Source / Year |
|---|---|---|
| Carroll County jail capacity | 25 total beds, 21 male and 4 female | IDOC inspection, May 14, 2024 |
| Carroll County jail inspection-date population | 5 total, 3 male and 2 female | IDOC inspection, May 14, 2024 |
| County jail occupancy on inspection date | 20.0% | Calculated from IDOC 2024 count and capacity |
| Juvenile beds and population | 0 beds and 0 juveniles | IDOC inspection, 2024 |
| FCI Thomson current population | 2,100 total, including 1,952 FCI and 148 camp | BOP population report updated June 4, 2026 |
| FCI Thomson designated capacity | 1,962 | BOP PREA report dated March 8, 2025 |
Carroll County Jail Population Trends
Carroll County's jail population has been small in every sourced local count, but the trend sources are not identical. Vera Institute trend data gives older county jail population and capacity figures through 2019. IDOC inspection reports give recent point-in-time inspection counts for 2022, 2023, and 2024. The two series should not be merged as a single average-daily-population line, yet together they show a local jail that is far smaller than the federal facility located at Thomson.
| Year | Jail Count or Proxy | Rated Capacity | Notes |
|---|---|---|---|
| 1970 | 11 | 12 | Vera trend data; rate 96.10 per 100,000 residents ages 15-64. |
| 2000 | 14 | 23.17 | Vera trend data; admissions listed at 75. |
| 2010 | 19 | 24 | Vera trend data; admissions listed at 136.5. |
| 2019 | 17 | 26 | Vera trend data; 7 pretrial and 10 sentenced. |
| 2022 | 7 inspection-date count | 25 | IDOC inspection dated May 24, 2022. |
| 2023 | 11 inspection-date count | 25 | IDOC inspection dated April 26, 2023. |
| 2024 | 5 inspection-date count | 25 | IDOC inspection dated May 14, 2024. |
The 2024 inspection also noted renovation planning and a separation-by-category noncompliance tied to the older jail layout. Those conditions can affect how many people the county can practically house in each area, even when the rated bed count stays the same. Illinois pretrial reform can also change the Carroll County inmate population because local release and detention decisions are no longer based on a simple cash-bail schedule.
Who Makes Up Carroll County Inmates
Recent public demographic detail for the county jail is thin. IDOC's 2024 inspection reported sex and juvenile status for the inspection date: 3 male detainees, 2 female detainees, and no juveniles. The most detailed demographic split in the research is the Vera 2019 dataset, which reported 17 people in the county jail, with 12 male, 4 female, 2 Black, 0 Latinx, and 14 White. That source also split the 2019 population into 7 pretrial people and 10 sentenced people.
- Local jail custody includes adult pretrial detainees and locally sentenced detainees held by the Carroll County Sheriff's Office.
- Juvenile custody is not part of the Carroll County jail figures in the 2024 IDOC inspection because the jail had no juvenile beds.
- State custody begins after an Illinois prison sentence and is searched through IDOC, not the county jail.
- Federal custody includes FCI Thomson inmates and is searched through BOP, even when the facility is physically in Carroll County.
FCI Thomson has a separate federal profile. Its PREA report listed a male facility with an age range of 20 to 83, seven housing units, six multiple-occupancy cell units, one open bay or dorm unit, and 96 segregation cells. Those figures describe the federal prison population, not Carroll County jail detainees.
Carroll County Jail Capacity
The county jail was under its rated capacity on the 2024 inspection date, with 5 people held in a 25-bed facility. Capacity alone does not tell the whole operational story. IDOC described a facility built in 1858 and last renovated in 1972, with housing areas such as East 1, East 2, West 1, West 2, the Female Block, Temporary Detention, an Observation Room, and Temporary Holding near booking and the sallyport. The inspection noted that renovation was in planning stages.
IDOC's 2024 noncompliance finding was not a crowding finding. It was "Insufficient Separation by Category," because the jail layout did not provide complete sound separation between male and female detainees. Recommendations also mentioned water damage, graffiti, exposed cords, plumbing issues, and painting needs. Build decisions and jail operations in Carroll County therefore turn on a mix of age, layout, separation rules, staffing, and court decisions, not just the bed count.
Carroll County Inmate Population Laws
Illinois law explains why some Carroll County jail population and booking information is public, and also why some details are withheld. The Illinois Freedom of Information Act applies to sheriff and county records unless an exemption allows redaction or denial. County jail standards require booking records, personal files, photographs, fingerprints, and monthly population reports. Medical, mental-health, juvenile, investigative, and safety-sensitive details may be protected.
Key Statutes:
5 ILCS 140/3 requires Illinois public bodies to make public records available for inspection or copying unless an exemption applies.
5 ILCS 140/2.15 covers core arrest information, including charges, arrest time and place, agency, custody transfer details, and a photograph when available.
20 Ill. Adm. Code 701.30 requires county jails to keep booking and personal records and submit monthly population reports.
20 Ill. Adm. Code 701.40 requires legal-authority checks, identity checks, commitment documents, photographs, and fingerprints at admission.
730 ILCS 210/3-5 requires death-in-custody reporting to the Illinois Criminal Justice Information Authority.
Carroll County State Prison Searches
No Illinois Department of Corrections prison was identified inside Carroll County. Still, IDOC is one of the most important search channels after a Carroll County arrest. A person can start in the Carroll County Correctional Facility, appear in Carroll County Circuit Court, receive a sentence, and later be admitted to IDOC. Once that transfer happens, the sheriff's office is no longer the right place to search the current prison location.
The IDOC search is statewide and covers sentenced Illinois prisoners. It is not the Carroll County jail roster. IDOC also notes that search information may be periodically unavailable during maintenance or updates. VINELink Illinois is a separate notification path that can help with custody-status alerts when participating data is available.
The IDOC Individual in Custody Search page is the official state locator for sentenced prisoners.
The IDOC screenshot fits the state-prison search channel that begins only after a person leaves county jail for state custody.
Search Carroll County Inmate Population
No official Carroll County Sheriff online jail roster or inmate-search portal was located on the county or sheriff website during research. That means a current Carroll County jail search is a fallback chain rather than a single web form. Start with the jail phone for live custody, then use a written FOIA request when a record copy, older booking, arrest report, or booking photo is needed. Court records and state or federal locators answer different questions.
Use the following order when the custody system is not known:
- Call the Carroll County Correctional Facility at 815-244-0265 and ask whether the person is currently held in county jail custody.
- If a copy of a jail, booking, arrest, incident, or booking-photo record is needed, submit a written FOIA request to the sheriff or county records contact.
- Search the Circuit Clerk and Judici path when the question is charges, hearings, or case status after a jail arrest.
- Use IDOC if the person was sentenced to Illinois state prison after the Carroll County case.
- Use BOP for FCI Thomson or another federal facility, ICE ODLS for immigration custody, and VINELink for notification support.
Current Carroll County Inmate Lookup
The official Carroll County jail page gives the jail address, phone, email, visiting hours, mail rules, and visitor rules. It does not expose a public online roster search form. Because the research excluded unofficial roster and mugshot aggregators, the official current-inmate lookup starts with the jail phone or an in-person inquiry. A FOIA request is the official route when phone confirmation is not enough or when a written record is needed.
| Channel | Type | Best Use | Notes |
|---|---|---|---|
| Official county jail roster | N/A | Not available from official county site | No official online Carroll County roster form was located. |
| Jail phone | Phone call | Current custody | Call 815-244-0265 and ask whether the person is held at the Carroll County Correctional Facility. |
| FOIA request | Written request | Records and older bookings | Identify the name, date of birth if known, record type, and approximate date. |
| VINELink Illinois | Notification service | Custody-status alerts | Use when participating custody data is available. |
Past Carroll County Inmate Records
Released and historical Carroll County inmate records are not handled by a public archive on the county website. The practical route is a written request under Illinois FOIA. A useful request names the person, gives a date of birth if known, lists an approximate arrest or custody date, and states whether the request is for an arrest report, booking record, incident report, jail custody record, or booking photograph. The county FOIA page says requests are written requests to the relevant agency, and the agency responds under the statutory timeframe unless records are exempt.
Past inmate searches often cross agency lines. A jail record may show booking and custody information. A court file may show the formal charge, hearing dates, disposition, and sentence. IDOC or BOP may show the later custody location after sentencing or federal transfer. If the record was sealed or expunged, public access may be limited by court order and Illinois law.
The Carroll County FOIA page explains the written request route for public records.
The FOIA page is important because Carroll County does not publish an official searchable jail roster for older or current bookings.
Carroll County Inmate Record Fields
No official online Carroll County jail profile was available to inspect, so online fields should not be promised. Illinois law and jail standards do identify record categories that may exist in arrest, booking, and jail files. Some can be public. Some may be redacted. Medical, mental-health, juvenile, and protected safety information require special care and may not be released to the public.
| Field | What It Shows |
|---|---|
| Name and identifying information | 5 ILCS 140/2.15 includes identifying arrest information such as name, age, address, and photograph when available. |
| Charges | Arrest information can include the charges linked to the arrest, while court records show filed charges. |
| Arrest time and location | Core arrest information includes when and where the arrest occurred. |
| Custody receipt or transfer | Public arrest information can include when someone was received, discharged, or transferred from custody. |
| Booking file | 20 Ill. Adm. Code 701.30 requires county jails to keep booking and personal record files. |
| Photograph and fingerprints | 20 Ill. Adm. Code 701.40 requires detainees to be photographed and fingerprinted during admission. |
County Jail vs State Prison
The most common Carroll County inmate search error is using the wrong system. The Carroll County Correctional Facility is for local arrests, pretrial custody, and short county sentences. IDOC is for sentenced Illinois prisoners after transfer. BOP is for federal inmates, including FCI Thomson. ICE ODLS is for immigration detention. A court case in Judici may show charges and hearings, but it does not prove the person is still in jail that day.
| Question | County Jail | State Prison | Federal / ICE |
|---|---|---|---|
| Who is held | Pretrial and local short-sentence detainees | Sentenced Illinois prisoners | Federal inmates or immigration detainees |
| Run by | Carroll County Sheriff's Office | Illinois Department of Corrections | BOP or ICE |
| Where to search | Jail phone, FOIA, in-person inquiry | IDOC locator | BOP inmate locator or ICE ODLS |
| Local example | Carroll County Correctional Facility | No state prison identified in county | FCI Thomson is in Carroll County |
State and Federal Search Channels
State, federal, and immigration searches fill gaps that the Carroll County jail phone cannot answer. The IDOC search form is for Illinois prisoners, not local jail detainees. The BOP locator searches federal inmates from 1982 to present and returns fields such as name, register number, age, race, sex, release date, and location. ICE ODLS requires either an exact A-number and country of birth or an exact biographical search, and it cannot search people under age 18.
- Detainer
- A hold or notice from another agency that may affect release from local custody.
- Pretrial release
- Release while a case is pending, subject to conditions set by the court.
- Classification
- The jail or prison process for housing and security placement.
- FOIA
- The public-records request process used when a record is not posted online.
Carroll County Detention Facilities
Two facilities drive the Carroll County inmate population site. The county jail page serves the local sheriff-run facility. The federal facility page serves the BOP prison at Thomson. They are both physically in Carroll County, but their lookup rules, mail rules, visiting rules, money systems, and public records channels are separate.
- Carroll County Correctional Facility holds local adult pretrial and short-sentence detainees for the Carroll County Sheriff's Office.
- FCI Thomson holds male federal inmates in BOP custody and is searched through the federal inmate locator.
Carroll County Inmate Population FAQ
How big is the Carroll County jail population? IDOC reported 5 people in the county jail on the May 14, 2024 inspection date. The same inspection listed 25 rated beds. That is a point-in-time count, not a live daily roster.
Is there an official Carroll County inmate roster online? Research did not locate an official sheriff online jail roster. Use the jail phone, FOIA, the Circuit Clerk/Judici path, IDOC, BOP, ICE, and VINELink depending on the custody question.
Does FCI Thomson count as the county jail? No. FCI Thomson is a Federal Bureau of Prisons facility in Carroll County. Its inmates are federal inmates and must be searched through BOP.
Can court records show if someone is still in jail? Court records can show charges, hearings, warrants, and case status. They do not replace current custody confirmation from the jail or the correct correctional locator.