Brown County Inmate Population
Brown County, Illinois has one local sheriff jail access point and one state prison facility that is physically inside the county. The Brown County Sheriff's Office is the local custody contact for people arrested in Brown County. Official county sources reviewed did not publish a current jail population, jail roster, booking report, mugshot gallery, or rated county jail capacity. That absence is the central Brown County jail fact for custody searches.
The larger documented custody population in Brown County is at Western Illinois Correctional Center, an Illinois Department of Corrections prison in Mount Sterling. It is not a county jail. It holds sentenced adult male individuals in IDOC custody from across Illinois. A person arrested locally may move from sheriff custody to court processing and, after sentencing, to IDOC. Once that transfer occurs, the Brown County jail path no longer controls the current custody record.
Brown County Inmate Statistics
The official data is uneven. Brown County publishes sheriff contact and local government information, but not a public county jail census. IDOC publishes detailed Western Illinois figures. The table separates missing local jail data from confirmed state prison data so the Brown County inmate population is not overstated or blended across agencies.
| Measure | Figure | Source / Year |
|---|---|---|
| Brown County jail current population | Not published online in official sources reviewed | Brown County sheriff, county, and FOIA pages |
| Brown County jail rated capacity | Not published in official county sources located | Brown County official pages reviewed |
| Western Illinois operational capacity | 2,123 | IDOC facility page |
| Western Illinois population | 1,442 as of 6/30/24 | IDOC facility page |
| Western Illinois FY25 total population | 1,529 on June 30, 2025 | IDOC FY25 Annual Report |
| Western Illinois FY25 average daily population | 1,568 | IDOC FY25 Annual Report |
Brown County Inmate Trends
Recent Brown County jail trend data could not be built from official county sources because the county did not publish recent jail counts, annual booking totals, capacity, or roster snapshots. Vera Institute county data gives limited historical context, including one total jail population in 1970 and one in 1978, with capacity six in those same historical rows. Recent extracted Brown County jail rows were blank, so blank fields should not be treated as zero.
| Year | Population / Capacity | Notes |
|---|---|---|
| 1970 | Jail population 1; capacity 6 | Vera county CSV, Brown County FIPS 17009 |
| 1978 | Jail population 1; capacity 6; admits 13 | Vera county CSV |
| 2015-2019 | Recent jail fields blank in extracted rows | Vera county CSV, do not read blanks as zero |
| 2024 | Western Illinois population 1,442 | IDOC facility page, as of 6/30/24 |
| 2025 | Western Illinois total population 1,529; ADP 1,568 | IDOC FY25 Annual Report |
IDOC's Western Illinois facility page is the source for the state prison snapshot shown below.
The screenshot belongs with state prison data, not county jail roster data, because Western Illinois is an IDOC facility.
Who Is Counted
Brown County jail demographics were not published in the official sources reviewed. No county roster or county dashboard showed a current split by pretrial status, sentence status, sex, race, age, charge level, or hold type. The safer reading is that Brown County sheriff custody covers local arrest and short-term custody questions, while the documented demographic facts are tied to the state prison.
- County jail custody: local arrests, first appearance, release decisions, transfer decisions, and short local custody where applicable.
- State prison custody: sentenced adult male IDOC population at Western Illinois Correctional Center.
- Federal custody: separate BOP or U.S. Marshals channels, with no BOP prison confirmed in Brown County.
- Immigration custody: separate ICE ODLS and ICE Contact Center channels, with no ICE detention facility confirmed in Brown County.
Brown County Inmate Laws
Illinois public-record law and county jail standards explain why some Brown County arrest and custody information can be requested even when it is not posted online. A request is not the same as a live roster. The public body may still redact or withhold material when a statute allows it, especially for safety, security, juvenile confidentiality, private information, or pending law-enforcement reasons.
Key Illinois rules:
5 ILCS 140/2.15 supports access to listed arrest information, including charges, arrest time and location, arresting agency, custody receipt or release details, and a photograph when and if available, subject to limits.
5 ILCS 140/3 sets the general FOIA request process and a usual five-business-day response period unless an extension applies.
20 Ill. Adm. Code Part 701 gives statewide county jail standards for topics such as admission, classification, medical care, mail, visiting, supervision, and release.
730 ILCS 210/3-5 requires death-in-custody reporting to ICJIA and public reporting subject to legal protections.
Brown County State Prison Population
Western Illinois Correctional Center makes Brown County unusual for inmate population research. The county's resident population is listed by the sheriff page as 6,244 people across 307 square miles, while IDOC reported 1,529 individuals at Western Illinois on June 30, 2025. That prison count is a physical facility count, not a count of people arrested by Brown County or charged in Brown County court.
Western Illinois opened in April 1989 and is described by IDOC as a medium-security adult male facility. IDOC also reports 21 buildings inside a 32-acre fenced perimeter and programs such as GED, vocational training, culinary arts, construction occupations, horticulture, substance abuse education, anger management, chaplaincy, library, parole school, and individual counseling. Those details help explain the prison population, but they do not create a county jail roster.
Search Brown County Inmates
No official Brown County online jail roster was located. Current local custody questions should begin with the Brown County Sheriff's Office. If custody cannot be confirmed by phone or if records are needed, use a narrow written FOIA request. If charges have been filed, the Circuit Clerk and Judici court-record route may be more useful than the sheriff for case status.
- Call the Brown County Sheriff's Office at 217-773-2061 for current local custody or transfer questions.
- Use the Brown County FOIA page to route a written request for arrest or booking records.
- Check the Brown County Circuit Clerk page and its Judici public court records link after charges are filed.
- Search the IDOC Individual in Custody Search for sentenced state prison custody.
- Use BOP, ICE, or VINELink when the facts point outside local sheriff custody.
Brown County Roster Fields
Because Brown County did not publish an official county jail search form, no real county roster fields can be listed. The useful search fields are fallback channels, not web form boxes. A phone call or written request should include enough identifiers to avoid a false match.
| Channel | Type | Required | Notes |
|---|---|---|---|
| County jail roster | N/A | N/A | No official Brown County online roster located. |
| Sheriff phone fallback | Phone call | No web field | Use full name, date of birth if known, arrest date, and transfer question. |
| FOIA request | Written request | No county form located | Ask for specific arrest, booking, charge, custody receipt, discharge, transfer, or photo records. |
| IDOC search | Dynamic web locator | Unspecified | Use for sentenced state prisoners, including Western Illinois custody. |
Brown County Inmate Records
A Brown County jail record may exist even when no online inmate profile exists. Illinois FOIA section 2.15 describes arrest-report information that criminal justice agencies must furnish within the statutory time frame, unless a listed limit applies. That statute is not a promise of an online profile. It is a basis for asking the sheriff for non-exempt arrest and custody information.
| Field | What It Can Show |
|---|---|
| Name and age | Identifying information listed in Illinois arrest-report law. |
| Address | Identifying detail that may be affected by privacy or redaction rules. |
| Photograph | Booking photo when and if available, subject to statutory limits. |
| Charges | Arrest charge information, which may differ from later court charges. |
| Arrest time and location | When and where the arrest occurred, unless withholding is allowed. |
| Custody dates | Received, discharged, or transferred time and date if incarcerated. |
Brown County Jail or Prison
Many Brown County inmate searches fail because the wrong system is used. A county jail question is about local arrest custody and short-term detention. A state prison question is about IDOC custody after sentencing. Federal and immigration custody sit outside both systems. Use the agency that controls the person's present custody, not just the county where the case began.
| Custody Type | Where to Look | What It Covers |
|---|---|---|
| Brown County jail | Sheriff phone and FOIA | Local arrest, booking, release, transfer, and short-term custody questions. |
| Illinois state prison | IDOC Individual in Custody Search | Sentenced state prisoners and IDOC facility placement. |
| Federal sentenced custody | BOP Inmate Locator | Federal inmates from 1982 to the present. |
| Immigration detention | ICE ODLS | ICE detainee lookup, separate from criminal jail and prison systems. |
| Custody notification | Illinois VINELink | Release or status alerts where participating data is available. |
Federal and ICE Search
No BOP prison, ICE detention center, U.S. Marshals contract jail, or separate city jail was confirmed in Brown County from official facility lists. Still, federal or immigration custody can matter when a local arrest connects to a federal case, a federal sentence, a detainer, or an immigration hold.
The BOP locator is the source shown below for federal sentenced custody.
BOP search results do not replace Brown County sheriff records, IDOC records, or ICE ODLS records.
Brown County Detention Facilities
The facility list has two official custody points. The first is the local sheriff jail access point at the courthouse. The second is a state prison run by IDOC. They should not be read as the same kind of inmate population.
- Brown County Sheriff's Office / Brown County Jail holds local arrest and county custody matters, but no official online roster or current jail population was located.
- Western Illinois Correctional Center holds sentenced adult male individuals in IDOC custody and has published population, capacity, visitation, mail, program, and deposit information.
Brown County Sheriff App
The Brown County Sheriff IL mobile app appears in both Apple and Google app stores. Store text describes public-safety news, reporting crimes, submitting tips, and other communication features. The store listings reviewed did not confirm an inmate roster, warrant search, booking report, or app-only mugshot feature, so the app should be treated as a public-safety channel rather than a verified jail lookup tool.
The Apple App Store listing identifies the seller as Brown County Sheriff's Office, IL.
Use emergency services for emergencies. The app listing itself says it is not intended for emergency reporting.
Brown County Inmate FAQ
Is there a Brown County jail roster? No official Brown County, Illinois online jail roster was located in the sheriff, county directory, FOIA, or related official pages reviewed. Call the sheriff for current local custody questions and use FOIA for records requests.
Is the Brown County jail population published? The current county jail population and rated county jail capacity were not published in official county sources located. IDOC does publish population and capacity data for Western Illinois Correctional Center.
Why does Western Illinois show so many people? Western Illinois Correctional Center is a state prison in Brown County, not the county jail. It holds sentenced IDOC prisoners from across Illinois.
Where are court charges found? Brown County directs public court-record users to Judici through the Circuit Clerk page. Court charges may differ from arrest charges.
Can released inmates be searched? Brown County did not publish a current or archived roster. For past booking records, use a narrow FOIA request or the court record if charges were filed.