Look Up Mercer County Inmates

Mercer County Jail Roster Overview

The Mercer County Sheriff's Office runs the county jail and keeps the booking records for everyone held there. What it does not run is an online roster. A sweep of the sheriff and county websites found jail contact, visitation, mail, money, FOIA, and PREA pages, but no current-inmate database, no booking report, and no mugshot feed. That is normal for a small rural jail. It just means the lookup works through people and paperwork instead of a web form.

The county roster also has limits even when you reach it by phone. It speaks only to current local custody. It does not cover a person sentenced to state prison, a federal defendant after commitment, or someone held on an immigration matter. Those each live in a separate system, and the right one depends on where the case has traveled.

How to Confirm a Mercer County Jail Booking

Because no roster screen exists, the jail phone is the front door. A direct call confirms a current booking faster than anything else, and the staff can say whether a booking photo or record is releasable. Gather a few details first so the call is quick.

1. Call the jail directly at (309) 582-5020 or (309) 582-5158. These are the published jail lines.
2. Give the person's full legal name, including a middle name, plus date of birth.
3. Add the approximate arrest date and the arresting agency if you know it.
4. Ask whether the person is still in custody or was released or transferred, and to which agency.
5. If staff cannot share a record by phone, ask how to file a written FOIA request.

In person works too. The sheriff and jail share the building at 906 SW 3rd Street in Aledo, which is the public counter for custody and jail-record questions. Keep that separate from the courthouse on SE 3rd Street, where court files and dates are handled.

Search Fields for Sentenced Mercer County Inmates

Mercer County has no online roster to fill out, so there is no county search form. The state does have one. Once a person is sentenced and transferred, the Illinois Department of Corrections Individual in Custody Search takes over, and it accepts a few clear fields. The table lists what that locator asks for.

The state locator is the cleanest official search tied to Mercer County cases, but only after a prison sentence. A quick look at the page shows the three search paths side by side.

The IDOC search page lets you find a sentenced Illinois prisoner by name, number, or birthdate.

For a person still in the county jail, none of these fields apply, which is why the phone call remains the first step for local custody.

What a Mercer County Inmate Record Shows

Even without a public profile, the booking file is detailed. The state inspection checklist confirms that the Mercer County Jail keeps a full record on each detainee, and it lists the parts. Some of these fields are internal and some can be reached through a records request, but together they show what a Mercer County inmate record holds.

Note: The charge listed at booking can differ from the charge a prosecutor files later, so the court file is the place to confirm the formal charge.

Finding County, State, and Federal Inmates

The single most useful habit is matching the person's custody stage to the right system. The county jail holds pre-trial and short-sentence inmates. A sentenced felon moves to an Illinois Department of Corrections prison. Federal defendants and immigration detainees each have their own federal locator. The table keeps the four straight.

The federal side matters more here than at most county jails. The 2024 state inspection says the Mercer County Jail houses U.S. Marshals Service detainees, so a federal defendant can sit in Aledo while the case stays federal. The federal locator below covers people in Bureau of Prisons custody.

The federal BOP locator finds people in federal custody by register number or by name.

A "Released" result on the federal locator does not always mean the person is free, since they may sit in state or county custody, so cross-check by calling the jail when the trail is unclear. The BOP locator and the ICE detainee locator handle the federal and immigration slices.

Why a Mercer County Inmate May Not Turn Up

A failed search rarely means the record does not exist. More often the person has moved, or a small detail is off. Custody changes fast, and a single jail call can come up empty for a reason that has nothing to do with guilt or a cover-up. Run through the common explanations before assuming the worst.

• The person was released, bonded out, or transferred to another county.
• They were sentenced and moved to an Illinois Department of Corrections prison.
• The U.S. Marshals Service or ICE took custody, which shifts the lookup to a federal system.
• They were taken for medical care or a court appearance elsewhere.
• The name is spelled differently, or a middle name or nickname is throwing off the match.

When the jail cannot find someone, ask whether they were released or transferred and to which agency. That one answer usually points to the next system to check.

Using Illinois VINE for Mercer County Custody Alerts

Illinois VINE is the steadiest way to track custody after that first phone confirmation. It is a free, secure notification service that the Circuit Clerk and the sheriff's crime-victim page both link. A user registers, then gets an alert when the person's custody status changes, including release. It will not replace the jail call for a fresh arrest, but it covers the days and weeks after.

The crime-victim page says a caller should be ready with the inmate's full name, an inmate or booking number if known, court case numbers, the date of birth, and a PIN chosen by the caller. VINEmobile carries the same service on a phone.

The Illinois VINE site is the entry point for custody and court-case notifications statewide.

For Mercer County, where there is no roster to refresh, a VINE alert does the job a roster status field would do elsewhere.

Requesting Mercer County Booking Records by FOIA

A written records request is the universal fallback for anything not on the phone. The sheriff's FOIA page says a request does not have to use a form. It must be in writing, sent by email to mcso@frontiernet.net, by fax to (309) 582-5158, or by mail or personal delivery to the Office of the Sheriff at 906 SW 3rd Street, Aledo. Requests must concern sheriff's office records; requests for other county offices are not forwarded.

The fee schedule is set. The first 50 black-and-white letter or legal pages are free, additional pages run 15 cents each, and a CD or DVD costs the price of the media. The Act allows five business days for a response, not counting the day the request arrives. For a single booking, name the person, give a date of birth and arrest date, and ask for the specific fields you need. Asking for electronic copies keeps page fees down.

Booking and Intake in Mercer County

The booking process follows the standard Illinois county-jail steps, which the state inspection lays out. After an arrest, the person is brought to the jail unless they need medical care first. A receiving officer checks the legal authority to hold them, verifies identity, and runs a pat-down search. Staff then photograph and fingerprint the person under current law and inventory their property on a signed receipt.

Screening comes next. Staff ask about medical conditions, medications, mental health, and self-harm risk, and pregnant detainees are screened accordingly. The person is allowed phone calls, and the dates and times are logged. Records are opened for booking, medical, property, visitors, and the court case, and the detainee is assigned housing with bedding and basic supplies. The county does not publish how long intake takes or when a booking would appear online, since nothing appears online. A call after transport is the way to confirm a fresh booking.

Visitation Hours and Rules

Visits run three days a week and are scheduled through the jail's vendor, not at the door. The sheriff lists Sunday, Wednesday, and Saturday in two blocks, and visits are booked through Combined Public Communications, also called Inmate Sales, or by phone. Staff can cancel a visit for policy reasons, so confirm before a long drive.

• Adult visitors must be at least 18 and show a valid state-issued ID.
• Two adults maximum per visit; children may visit with a parent or guardian.
• Dress code requires a shirt and shoes, with no revealing, gang-related, or non-religious headwear.
• No food or drinks in the visitation room, and no items may be dropped off for inmates.

Scheduling runs through Inmate Sales or 1-877-988-5678.

How to Contact a Mercer County Inmate

Mail uses two different addresses, and sending to the wrong one slows everything down. Since July 5, 2023, regular non-legal mail goes to a Kentucky processing address. Legal mail and money orders go straight to the jail in Aledo. The split matters, so the table spells it out.

Phone, video visits, texting, and tablet features run through Inmate Sales. A person funds those services on that vendor account. Because there is no roster, a sender who does not know the inmate number should call the jail before mailing anything.

Commissary, Money, and Bond Deposits

Money splits into three jobs, and the jail uses different tools for each. Trust and commissary deposits go through JailATM.com, a lobby kiosk, or a mailed money order. Commissary itself runs through Stellar, Inc. and a jail store. Bond payments, where the court allows them, also go through JailATM or are paid in person at the sheriff's office in Aledo. Keep a commissary deposit separate from a bond payment, since they are not the same action.

One scam warning belongs here. The Office of Statewide Pretrial Services says its supervision and GPS services are free, and that anyone demanding payment for release or special programs is not legitimate. For booking photos and the records angle, the jail roster mugshots page covers the FOIA route, and the Mercer County Jail page carries the full facility detail.