Franklin County Inmate Population Overview
The local Franklin County inmate population is centered on the Franklin County Sheriff's Office & Jail Facility in Benton. The county facilities page identifies that building as the place for sheriff and jail business, while the sheriff page says the office provides law enforcement, detention, court security, and emergency dispatch services. That matters for lookup work because a new arrest by the sheriff, Benton police, West Frankfort police, Illinois State Police, or another local agency is first a county jail question, not an IDOC prison question.
Franklin County has one live adult detention facility in the Facility Map for this build. No state prison, BOP prison, ICE detention center, or live federal detention site was confirmed inside Franklin County. Big Muddy River Correctional Center appears often in southern Illinois searches, but IDOC places it in Jefferson County. It is useful state-prison context only. The county facilities page also names a juvenile detention building on East Washington Street, but that page says it is closed, so it should not be treated as a current inmate population facility.
Franklin County Inmate Population Statistics
The best local capacity figure located for the Franklin County jail is 103 people. That number comes from an Illinois Guardianship and Advocacy Commission Human Rights Authority report that interviewed sheriff and jail staff and described the jail's holding cells, cameras, treatment-request kiosk access, and behavioral-health partnership. The county materials reviewed did not publish a current daily jail count, a public average daily population dashboard, or annual jail booking totals. Those gaps should stay visible because a made-up local count would be less useful than a clear source boundary.
The Franklin County Sheriff's Office 2025 annual-report extract supplied broader service-area context. It cited a 2023 county population of 37,138, 432 square miles total, 409 square miles of land, 23 square miles of water, and Rend Lake recreation drawing about 1.6 million visitors a year. Those facts do not state the jail count, but they explain why the sheriff's custody workload can include county residents, visitors, traffic arrests, warrant arrests, and people brought in by several local agencies.
| Measure | Figure | Source / date |
|---|---|---|
| Franklin County jail capacity | 103 people | Illinois Guardianship and Advocacy Commission HRA report, 2024/2025 posted PDF |
| Current Franklin County jail population | Not published in official web sources reviewed | Sheriff, facilities, transparency, and IDOC inspection sources reviewed |
| Franklin County jail ADP | Not published in official web sources reviewed | IDOC collects monthly jail statistics, but no Franklin County public table was located |
| Franklin County population | 37,138 | 2025 sheriff annual-report extract citing 2023 Census context |
| Illinois incarceration rate | 433 per 100,000 people | Prison Policy Initiative Illinois profile, statewide context |
| National jail ADP | 664,800 | Bureau of Justice Statistics, 12 months ending June 30, 2023 |
Franklin County Inmate Population Trends
Franklin County does not publish a local jail trend table in the official pages reviewed. The research found a county jail capacity figure, a state inspection framework, and state-level reporting rules, but not a year-by-year county jail ADP series. Illinois Department of Corrections Jail and Detention Standards says it collects monthly detainee population statistics from county jails and sends a database to ICJIA annually. A Franklin County public dataset was not located during the Phase A research.
State-prison numbers are more visible because IDOC posts quarterly reports. Big Muddy River Correctional Center is not a Franklin County facility, yet it helps show the difference between a county jail population and sentenced IDOC custody. The IDOC facility page listed Big Muddy's population as of June 30, 2024. The April 1, 2026 quarterly report gave a later current population, ADP, operational capacity, rated capacity, and vacancy figure for that Jefferson County prison.
| Date / source | Population or ADP | Capacity note |
|---|---|---|
| Franklin County HRA report | Capacity only, not a current count | 103-person jail capacity |
| Franklin County official web pages reviewed | No current jail population located | No browser roster or dashboard found |
| Big Muddy IDOC facility page, 6/30/24 | 1,495 | Operational capacity 1,961 on facility page |
| Big Muddy IDOC quarterly report, Feb. 28, 2026 | 1,610 current; 1,597 ADP | Operational capacity 1,865; rated capacity 1,784 |
Laws Governing Franklin County Jail Records
Illinois law gives the Franklin County inmate population its public-record framework. The county transparency page says every county department has a trained FOIA officer and that requests should be sent to the department that holds the record. For jail records, the sheriff FOIA officer is Dava Vice at the Franklin County Jail. For court charges and docket entries, the Circuit Clerk is the record holder. That split keeps booking records, formal court records, and state-prison records in the correct lane.
Key statutes and rules:
5 ILCS 140 presumes public records are open unless an exemption applies and gives a written FOIA request process.
5 ILCS 140/2.15 requires law-enforcement agencies to make specified arrest information available, including an available photograph, subject to exceptions.
20 Ill. Adm. Code Part 701 sets Illinois county jail standards for admission, records, medical care, visiting, telephone access, and related jail operations.
730 ILCS 210/3-5 requires written reporting of deaths in custody to ICJIA within the statutory period.
How to Search Franklin County Inmates
A Franklin County inmate population search should start with the county jail only when the person may be in local custody. The official materials reviewed did not show a normal browser-based current-inmate roster on the county domain. The sheriff page instead identifies the Franklin County Sheriff IL mobile app as a free public communication tool, and county pages provide the jail phone line and FOIA process. That means the practical local chain is app, phone, in-person, written public-record request, then state or federal systems if the person has moved.
- Check the official Franklin County Sheriff IL app if available on the phone being used.
- Call the Franklin County Sheriff's Office and jail at 618-438-4841 for current custody and visitation questions.
- For records not provided informally, submit a FOIA request to Dava Vice at Franklin County Jail, 403 E. Main, Benton, IL 62812.
- Search the IDOC Individual in Custody Search when the person has been sentenced to state prison.
- Use the BOP inmate locator, ICE ODLS, or Illinois VINELink when the custody type points outside the county jail.
Franklin County Jail Lookup Channels
The county jail search table is unusual because no inspected web roster exposed fields. The sheriff app is real, and official app-store pages confirm the app, but the in-app roster fields were not visible through the web sources reviewed. The safest Franklin County inmate population workflow is to use the app if possible, then verify by phone or FOIA when fields such as charges, custody status, booking photo, or transfer history are not visible.
| Channel | Type | Required | Notes |
|---|---|---|---|
| Franklin County Sheriff IL app | Mobile app | App access | Official sources indicate public information and app-based jail or inmate information, but web inspection did not reveal field labels. |
| Jail phone lookup | Verbal request | Person's name helpful | Call 618-438-4841 and provide name, birth date if known, and booking or case context. |
| FOIA request | Written request | Enough detail to identify records | Direct sheriff and jail records requests to Dava Vice at the jail address. |
| IDOC locator | State web search | Last name, IDOC number, or birthdate mode | For sentenced state custody, not local pretrial jail custody. |
The Franklin County Sheriff's Office page is the official local source for the sheriff app and jail visitation contact path.
The screenshot reinforces that the sheriff, not a third-party roster site, is the first local source for Franklin County jail custody questions.
What Franklin County Inmate Records Show
Because a web jail profile was not available for inspection, Franklin County inmate record fields should be described from Illinois law and jail standards rather than from a made-up roster screen. FOIA section 2.15 covers arrest information such as name, age, address, charges, arrest time and location, arresting or investigating agency, available photograph, bond or custody movement details where applicable, and received, discharged, or transferred times. Jail standards separately address booking and personal records, fingerprinting, photographing, medical screening, and monthly population reports.
| Field | What it can show |
|---|---|
| Name and identifying details | Name, age, address, and other identifying data when releasable under Illinois law. |
| Charges | Arrest charges from the booking stage, which may differ from formal court charges. |
| Arrest details | Time, place, and arresting or investigating agency. |
| Booking photo | Photograph when available, subject to FOIA limits, juvenile rules, safety, and facility-security concerns. |
| Custody movement | Time received, discharged, or transferred from custody when released. |
| Pretrial status | Release, detention, warrant, detainer, or other hold context that should be checked against the court file. |
Franklin County Jail vs State Prison
The county jail and the Illinois prison system answer different questions. Franklin County jail records deal with recent arrests, pretrial custody, local jail holds, short local sentences when housed at the jail, and people held for another agency when accepted. IDOC records deal with sentenced state prisoners after a court commitment. Federal defendants and immigration detainees may pass through local court or holding channels, but their custody lookup can move to USMS, BOP, or ICE systems.
| Custody stage | Correct lookup | What it covers |
|---|---|---|
| Recent county arrest | Sheriff app, jail phone, or FOIA | Current local custody and booking records. |
| Formal charges | Judici and Circuit Clerk | Court case number, filed charges, docket, orders, and disposition. |
| Sentenced state prison | IDOC locator | State prison status, IDOC number, institution, photos, sentence data, and VINE link. |
| Federal or immigration custody | BOP, USMS, or ICE | Federal inmate location, release status, or immigration detainee search. |
State and Federal Inmate Search
The IDOC embedded search form allows search by last name, IDOC number, or birthdate. Results can show an IDOC number, name, birthdate, parent institution, status, location, front and side photos, physical profile, projected parole or discharge dates, sentencing information, and a VINE link. IDOC also says the public may call IDOC at 217-558-2200 for individual-in-custody information when the web search is unavailable or incomplete.
Federal and immigration searches are separate. The BOP locator covers federal inmates from 1982 to present and can search by register number or name. ICE ODLS requires JavaScript and is used for immigration detention. The U.S. Marshals Southern District of Illinois serves Franklin County and lists a Benton office, but federal pretrial detainees may be held in contract facilities or moved. A Franklin County inmate population search should not assume a person remains in the county jail once federal, ICE, or IDOC custody is involved.
The IDOC search form is a better match for sentenced prisoners than the Franklin County jail phone line.
The image shows why last name, IDOC number, or birthdate search belongs in the state-prison part of a Franklin County custody search.
Franklin County Detention Facilities
The Facility Map produces one current local adult facility page. The jail is operated by the Franklin County Sheriff's Office and should be used for people in local custody. State prison, BOP, ICE, and closed juvenile-facility references belong in explanatory text, not as extra Franklin County facility pages.
- Franklin County Sheriff's Office & Jail Facility - the county jail in Benton for adult pretrial detainees, local sentenced detainees where applicable, and accepted holds for other agencies.
Franklin County Jail Programs
Official HRA materials describe several jail condition and program details that help explain the local custody environment. The report says the jail has six holding cells, camera monitoring and communication, about 60-day camera recording retention, and treatment-request access through a day-room button, kiosk, and rolling kiosk. It also says the sheriff partnered with Take Action Today beginning in August 2022 for community behavioral-health and reentry support, including a full-time trained peer recovery specialist and crisis-intervention support.
County news also stated that a Jail-Based Mental Health Restoration Program was scheduled to launch at the Sheriff's Office on June 16, 2026 with IDHS and Centerstone. The county described Franklin County as one of only three county jails in Illinois to operate that type of program at launch. Those details are useful for local context, but they do not create a public roster or a current jail count.
Franklin County Inmate Population FAQ
How large is the Franklin County inmate population? The county's current jail count was not published in official web sources reviewed. The most specific local capacity figure located was 103 people, from an Illinois Guardianship and Advocacy Commission HRA report.
Where should a Franklin County inmate search start? Start with the Franklin County Sheriff IL app if available, then call the jail at 618-438-4841. Use a FOIA request for records not provided through informal channels.
Does Franklin County have a browser jail roster? No ordinary official browser-based roster was located on the county website during research. The official materials point instead to the sheriff app, phone line, and FOIA process.
When should IDOC be searched? Search IDOC after a person has been sentenced to Illinois Department of Corrections custody. IDOC is not the first lookup for a fresh Franklin County jail booking.
Are federal detainees listed in the county inmate population? Not reliably. Federal custody should be checked through federal court, USMS channels, and the BOP locator, depending on the case stage.