The Boone County Inmate Population
The Boone County inmate population is concentrated in one local detention facility: the Boone County Jail / Boone County Adult Detention Facility in Belvidere. The official Corrections and County Jail page identifies the jail as a Boone County Sheriff's Office operation and names Sheriff Scott Yunk and Jail Superintendent Lt. Jodi Ewers. People counted in the local jail population include adults awaiting court, people held during pretrial-release review, locally sentenced detainees, weekend commitments, electronic-monitoring commitments, and people waiting for transfer or release processing.
That local jail count is separate from the wider correctional systems that may serve a Boone County case later. A person sentenced to an Illinois prison leaves the Boone County jail population and is searched through the Illinois Department of Corrections Individual in Custody Search. A federal sentence routes to the Federal Bureau of Prisons locator. Immigration custody uses ICE channels. Mixing those systems is the most common reason a search fails, especially after a court date, a transfer, or a release order.
Boone County Inmate Population Statistics
The strongest hard numbers for the Boone County inmate population come from the IDOC Office of Jail and Detention Standards inspection. The 2024 inspection recorded a point-in-time jail population of 45 people on December 10, 2024, with 40 male detainees and 5 female detainees. The same inspection listed a rated capacity of 128 beds. Boone County's own jail page also states that the early 2003 expansion increased the jail from 48 beds to capacity for 150 detainees, so both figures should be read with the source label attached.
| Measure | Figure | Source / Year |
|---|---|---|
| Inspection-date jail population | 45 total, 40 male and 5 female | IDOC Boone County Jail Inspection, Dec. 10, 2024 |
| Rated capacity | 128 total, 112 male and 16 female | IDOC Boone County Jail Inspection, 2024 |
| County expansion statement | 48 beds expanded to 150 detainees | Boone County Corrections page, early 2003 expansion |
| Juvenile capacity | 0 male, 0 female | IDOC Boone County Jail Inspection, 2024 |
The 45-person figure is not an average daily population. It is a snapshot from the inspection date, which matters because daily jail counts can move with arrests, court orders, transfers, and releases.
Boone County Inmate Population Trends
Boone County's research file did not locate a multi-year average daily population series or annual booking count from official sources. The best trend evidence is the comparison between IDOC inspection forms and the county's facility history. The 2021 inspection listed a point-in-time population of 67 people against a reported rated capacity of 171. The 2024 inspection listed 45 people against a reported rated capacity of 128. The reporting basis for capacity changed, so the safest reading is that both inspections found the jail under the inspection-rated capacity on those dates.
| Year or Date | Population / Activity | Use Note |
|---|---|---|
| Early 2003 | Capacity expanded from 48 beds to 150 detainees | County operational history, not a daily population count. |
| Nov. 2, 2021 | 67 inspection-date population | IDOC inspection; capacity field listed 171. |
| Dec. 10, 2024 | 45 inspection-date population | IDOC inspection; capacity field listed 128. |
| 2023 | 368 warrant-service events in sheriff patrol table | Enforcement activity, not jail admissions. |
Boone County Jail Population Makeup
Official Boone County sources provide a limited demographic picture. The 2024 IDOC inspection gives a male and female population split on the inspection date and a rated male and female bed count. It does not provide a race, ethnicity, age-band, average length of stay, pretrial-versus-sentenced breakdown, or annual intake table. The county's own detention descriptions still identify the jail's main custody groups: adults awaiting court, people held while release conditions are reviewed, sentenced jail detainees, weekend commitments, and people awaiting transfer.
- Adult custody: the 2024 inspection lists zero juvenile bed capacity and zero juvenile population.
- Sex breakdown: the inspection-date count was 40 male detainees and 5 female detainees.
- Local jail role: Boone County Jail handles pretrial and short local jail custody, not sentenced state-prison custody.
- Transfers: a Boone County defendant sentenced to prison should move into the IDOC search system after transfer.
Boone County Jail Capacity
The Boone County inmate population was below both cited capacity figures on the 2024 inspection date. Using IDOC's 128-bed rated capacity, the 45-person inspection count was about 35 percent of rated capacity. Using the county page's historical 150-detainee expansion statement, the same inspection count was about 30 percent of that county-stated capacity. Those ratios should not be called an annual occupancy rate because they come from a single inspection date.
The IDOC inspection adds detail about how the jail is built. The 2024 form lists two detention floors, 5 double cells, 86 single detention rooms, 12 double detention rooms, and one 8-bed dormitory. Boone County also describes the facility as a direct-supervision jail, meaning staff supervise detainees in housing dayrooms with direct contact. That operating model affects daily population management because housing, classification, behavior, and supervision all shape where a detainee is placed.
Laws for Boone County Jail Data
Illinois law controls how jail, arrest, and population records can be inspected or released. The public can seek many Boone County jail records under FOIA, but that does not mean every part of a detention file is posted online. Medical records, juvenile records, pending-investigation material, private information, and records that would impair an investigation may be withheld or redacted. The jail itself is also inspected by IDOC under a separate statute, and those inspection results are public-review records.
Key Statutes:
5 ILCS 140/1 et seq. defines Illinois public records and private-information limits for public bodies.
5 ILCS 140/2.15 covers arrest-record disclosure, with limits and special booking-photo rules.
730 ILCS 5/3-15-2 requires IDOC jail inspections and public availability of county jail inspection results.
725 ILCS 5/110-5 governs pretrial release conditions after an arrest in Illinois.
Boone County and IDOC Custody
No state prison was located in Boone County in the official facility review. That does not mean Boone County defendants never enter state custody. It means the local jail and the state prison system are separate. A person may be booked into Boone County Jail after arrest, appear in Boone County Circuit Court, and later be transferred to IDOC after a prison sentence. At that point, the Boone County inmate population no longer includes the person in the same local-jail sense.
IDOC searches can be run by last name, IDOC number, or birthdate. The IDOC page also provides a public phone line, 217-558-2200, for individual-in-custody information. Law-enforcement officials have a separate number, but public users should use the public route. VINELink may still help with release or transfer notices when registration is available, but the source of record for a sentenced Illinois prisoner is IDOC.
Search Boone County Inmates
Boone County's official online custody route is the county V.I.N.E. Link (Inmate Look Up) page, which points users to VINELink. The county page also publishes the 24-hour VINE hotline, 1-866-566-8439. This is different from a static county-hosted jail roster table. VINELink is custody-status and notification oriented, so a person looking for a full booking file, arrest report, or booking photo may need to call the jail or submit a records request.
The most useful starting data is the person's full name, date of birth if known, arrest date, and arresting agency. A new arrest may not appear at once. A released person may no longer appear. A person sentenced to state prison may have moved to IDOC, and a federal pretrial detainee may not appear in BOP until designation.
- Open Boone County's VINE page and follow the VINELink route for Illinois custody status.
- Search by the person's name, then narrow to Boone County or the listed custody agency if the live interface offers that filter.
- Review custody status and notification options if the person appears.
- Call Boone County Jail at 815-544-9322 or the VINE hotline if the live search fails.
- Use the Sheriff's FOIA process for booking records, mugshots, arrest reports, and older records that are not online.
- Switch to IDOC, BOP, or ICE when the custody type is state prison, federal, or immigration custody.
Boone County Custody Lookup Fields
The static Boone County page does not contain its own search boxes. It links outward to VINELink, and VINELink's live app controls can change. The captured research still supports a practical field table because the county names the service, the hotline, and the notification methods.
| Field or Channel | Type | Required | Notes |
|---|---|---|---|
| Boone County VINE page | Link route | Start point | The county page sends users to VINELink rather than embedding a roster. |
| Illinois state selection | Interactive selection | Usually required | VINELink may ask the user to select Illinois before searching. |
| Name search | Text search | Required in practice | Use full name when possible and check spelling variants. |
| Notification registration | Phone, email, text, or TTY | Optional | County research identifies these notification options. |
| Hotline | Phone | Optional fallback | Call 1-866-566-8439 when online access is not workable. |
The Illinois VINELink landing page is the statewide public entry point for the custody-notification side of the search.
Past Boone County Inmate Records
Boone County did not publish a released-inmate archive in the reviewed official pages. For a past inmate, start by deciding what record is needed. Custody status belongs with VINELink or the jail phone while the person is held. A booking record, arrest report, or mugshot request belongs with the Sheriff's Office / Belvidere Police FOIA form. A filed charge, court date, disposition, or warrant tied to a case belongs with the Circuit Clerk and Judici.
The FOIA form asks the requester to provide enough detail for the public body to identify the record. Useful details include full name, date of birth, incident or arrest date, arresting agency, and case number if known. The Sheriff's Office records contact in the research is FOIA Officer Liz Weber at weber@boonecountyil.gov, phone 815-547-1704, and fax 815-544-9573. The stated response time is five business days, with a possible written five-business-day extension.
Boone County Inmate Record Details
Because Boone County routes public lookup to VINELink, the research did not capture a full local inmate-profile page with charges, bond, housing, and mugshot fields. It did identify records the jail maintains or uses through official pages and IDOC standards. Some fields are public-facing, some are internal, and some may be released only after review.
| Field | What It Shows |
|---|---|
| Detainee name | Used for mail, account deposits, and custody lookup. |
| CID number | Required for Access Corrections deposits to a detainee account. |
| Custody status | Available through VINELink and jail confirmation routes. |
| Booking photo and fingerprints | Taken under inspected admission standards, but public online display was not confirmed. |
| Case disposition, judge, and court | Maintained under jail standards, while public court details are better searched through Judici. |
| Medical and mental-health intake | Part of jail records, but sensitive and likely restricted from public release. |
Boone County Jail vs Prison Search
A Boone County jail lookup and an Illinois prison lookup answer different questions. The local jail route is for people held at Boone County Jail after a local arrest, for short local sentences, or while waiting for court or transfer. IDOC is for sentenced state prisoners. BOP is for federal inmates, and ICE ODLS is for immigration custody. Federal pretrial custody can be harder to confirm because BOP may not list a person until BOP custody begins.
| Custody Type | Where to Look | What It Covers |
|---|---|---|
| Current Boone County jail custody | Boone VINE page, VINELink, jail phone | Local pretrial, sentenced jail, and transfer-processing custody. |
| Sentenced Illinois prison custody | Illinois Department of Corrections locator | People transferred to state prison after sentence. |
| Federal prison custody | BOP inmate locator | Federal inmates from 1982 to present. |
| Immigration custody | ICE Online Detainee Locator System | ICE detainee lookup, with JavaScript required. |
Boone County Detention Facilities
Official facility research found one local detention facility in Boone County. Belvidere Police shares the Public Safety Building address, but the city page describes a police department rather than a separate long-term jail. No state prison, BOP prison, ICE detention facility, regional jail, or work-release center was located inside Boone County in the official facility map.
- Boone County Jail / Boone County Adult Detention Facility - the county adult detention facility for local pretrial detainees, sentenced jail detainees, weekend/electronic-monitoring commitments, and people awaiting release or transfer.
Boone County VINELink Access
The county's official inmate lookup route is shown on the Boone County V.I.N.E. Link page.
The screenshot matters because it confirms the local lookup route is VINELink plus the county-published hotline, not a static Boone County roster table.
Boone County Inmate Population FAQ
How big is the Boone County inmate population?
The best official snapshot in the research is the Dec. 10, 2024 IDOC inspection, which listed 45 people in the Boone County Jail. That is a point-in-time inspection count, not an annual average.
How do I search the Boone County inmate population?
Start with the Boone County VINE page and VINELink. If the person is not listed, call Boone County Jail at 815-544-9322 or use the VINE hotline at 1-866-566-8439.
Can I look up a released inmate?
No official released-inmate archive was found. Use the Sheriff's FOIA form for booking or arrest records and Judici for the court case that followed the arrest.
Where do sentenced Boone County prisoners appear?
After a state-prison sentence and transfer, search IDOC. The Boone County jail route is for local custody, not the long-term Illinois prison population.