Warren County Jail Role
Warren County Jail is operated by the Warren County Sheriff's Office at 121 North A Street in Monmouth, Illinois. It is not the primary Henderson County jail. Its importance for Henderson County inmate lookup comes from IDOC inspection comments for Henderson County Jail, which state that male Henderson detainees are housed at Warren County Jail when necessary. A person arrested in Henderson County can therefore have a Henderson County court case and sheriff record while being physically held in Warren County.
That distinction should guide every lookup. The charging county controls the court file, while the housing county controls day-to-day visit, mail, property, commissary, and phone rules. If a relative says someone was arrested in Henderson County but the Oquawka jail has no current population, ask the Henderson County Sheriff's Office whether Warren County Jail is the current housing site. After that confirmation, Warren County can answer facility-specific questions about Monmouth custody.
The Warren County Sheriff's Office page is the matching public source image for the Monmouth facility and its sheriff contact information.
The screenshot reinforces that Warren County is a separate sheriff office, so Henderson County case questions and Warren County housing questions should be routed to the right office.
Warren County Jail Capacity
The Illinois Sheriffs' Association lists Warren County Jail with 22 beds. The research gathered for Henderson County uses Warren as a contract or overflow housing site for male Henderson detainees, not as a Henderson County-owned facility. No Henderson-specific daily population number for Warren County Jail was located. Because of that, the sourced stat block should be read as facility capacity only, not as a count of Henderson County people in Warren custody.
| Measure | Figure | Source Context |
|---|---|---|
| Facility capacity | 22 beds | Illinois Sheriffs' Association Warren County listing |
| Henderson County role | Male detainee housing when needed | Henderson County IDOC inspection comments |
| Henderson-specific population at Warren | Not published in located sources | Confirm through Henderson and Warren sheriff offices |
Warren County Jail Lookup
A lookup for a Henderson County man possibly housed at Warren County Jail should not start by assuming Warren owns the case. Start with Henderson County because the original arrest, booking record request, and court filing may remain in Oquawka. Henderson County's local inmate lookup is app-first through the sheriff mobile app, with a phone fallback at 309-867-4291. If Henderson confirms that Warren is the physical jail, then call the Warren County Sheriff's Office for facility rules and current jail contact routing.
- Check the Henderson Co. Sheriff's Office app or call Henderson County at 309-867-4291 for current custody routing.
- Ask whether the person is a male Henderson detainee housed at Warren County Jail in Monmouth.
- If Warren housing is confirmed, call Warren sheriff administration at 309-734-8506 or non-emergency dispatch at 309-734-8383.
- For Henderson County charges, use Henderson County court records rather than assuming Warren County court has the prosecution.
- If the person has been sentenced to state prison, use the IDOC Individual in Custody Search instead of either county jail.
Illinois VINE can add custody and case notifications, but it should not replace direct sheriff verification. Federal custody is searched through BOP, and immigration custody is searched through ICE ODLS, because Warren County Jail is not a federal or ICE facility in the Henderson County research.
Warren County Jail Contact
The official Warren County sheriff page lists both administration and dispatch contact numbers. Use administration for normal jail or sheriff office questions when open, and use non-emergency dispatch for non-urgent routing. Emergency calls still go to 911. When the question is about a Henderson County case, be clear that the person may be a Henderson detainee housed in Warren County so staff can route the call correctly.
Warren County Jail
121 North A Street
Monmouth, IL 61462
309-734-8506
Sheriff administration for routine office questions.
Warren County Dispatch
121 North A Street
Monmouth, IL 61462
309-734-8383
Non-emergency dispatch line listed by Warren County.
Warren County Jail Visits
No official Warren County, Illinois public visitation schedule or commissary instruction page was located in the Henderson County research pass. That gap is important. A Henderson County detainee physically held in Warren County will follow Warren County Jail visit rules, not Henderson County's Oquawka visit setup. Those rules can include sign-up windows, identification, visitor limits, property limits, attorney visit procedures, and remote or in-person availability, but the located sources did not document them.
| Visit Question | Located Answer | Recommended Contact |
|---|---|---|
| Public visit schedule | Not located in official sources | Call Warren administration, 309-734-8506. |
| Non-emergency routing | Dispatch number published | Call 309-734-8383 if administration is not the right route. |
| Henderson case status | Stays with Henderson County court if charged there | Use Henderson court and sheriff channels. |
| Physical housing | Must be confirmed before travel | Ask Henderson first, then Warren if confirmed. |
Call before making the trip from Oquawka or another Henderson County community to Monmouth. A visit plan should be based on confirmed custody, current Warren County rules, and any discipline or classification limits that apply to the person held.
Warren County Jail Mail
The research did not locate official Warren County mail format, commissary vendor, deposit fee, video visit vendor, or phone-rate details. Those gaps should not be filled with rules from another county. A person housed at Warren County Jail may have different mail screening, money deposit, publication, property, and phone account rules than Henderson County Jail or McDonough County Jail. Use Warren County sheriff contact numbers for the current rule set.
| Service | Documented Detail | Action |
|---|---|---|
| Format not located | Call before sending letters, photos, books, or property. | |
| Phone | Vendor not located | Ask Warren staff how calls are set up. |
| Money deposit | Vendor and fees not located | Do not assume online deposits are available. |
| Commissary | Public schedule not located | Confirm order days and limits with the jail. |
Warren County Jail Housing
For Henderson County users, Warren County Jail is best understood as a physical housing site. A Henderson arrest can lead to initial sheriff processing, a court case in the Ninth Judicial Circuit, and then housing in Monmouth if Henderson County is not holding the person in Oquawka. That does not change which court handles the charge. It does change which jail controls daily needs such as visits, calls, clothing, mail screening, commissary access, and release pickup instructions.
When asking about a person housed in Warren County on a Henderson County case, use plain facts. Give the person's full name, date of birth if known, arrest date if known, and the belief that the case began in Henderson County. Ask for the current housing status, whether the person can receive visits or mail, and whether release must be handled through Warren or Henderson staff. Avoid sending money or property until Warren County confirms the current rule.
County-jail housing also differs from state-prison custody. A pretrial detainee or short-term county sentence can stay within the sheriff jail system, even if the physical jail is outside the charging county. Once a person is sentenced to an Illinois prison term and transferred to IDOC, Warren County Jail is no longer the search point. The record then follows the statewide IDOC locator, and Warren County can only answer questions about the time the person was actually housed in Monmouth.
About Warren County Jail
Warren County Jail sits in Monmouth, north and east of Henderson County communities near the Mississippi River corridor. The Illinois Sheriffs' Association directions reference the U.S. 34/67 bypass, Broadway, and A Street. For Henderson County families, the distance matters because a person may not be in the county where the arrest happened. Confirming the housing location before travel can prevent missed visits, wrong office trips, and mail sent to the wrong jail.
The key research limit is the lack of official Warren County public detail on visitation, mail, and commissary in the Henderson County source set. That does not mean Warren lacks rules. It means the rules were not available in the public pages located during research. Facility-specific questions should go through Warren County once Henderson confirms the person is physically housed there. General Henderson County custody search guidance remains in the Henderson County inmate population hub.
Warren County's role also helps explain why a Henderson County jail search can feel inconsistent. A family member may hear "Henderson County arrest" from a police contact, "Warren County Jail" from a housing call, and "Henderson County Circuit Court" from a court notice. Those can all be true at the same time. The clean way to sort the record is to separate arresting county, charging court, and current jail bed.
Note: Confirm Warren County housing with Henderson County before relying on Monmouth visit, mail, or release instructions.