Find Mercer County Inmate Population

Mercer County inmate population records are managed by the Mercer County Sheriff's Office in Aledo, Illinois. The county sits along the Mississippi River in western Illinois, with around 15,437 residents. People arrested in Mercer County are held in the county jail while they wait for court or serve short sentences. For inmates who end up in state prison, the Illinois Department of Corrections takes over. This page walks through the ways to find Mercer County inmate data, request records, and get in touch with the right offices.

Mercer County Jail Inmate Population

The Mercer County Sheriff's Office operates the county jail in Aledo. Anyone arrested in Mercer County goes here first. The jail holds pre-trial detainees and people serving sentences under one year. It is a small facility. Daily counts are far lower than what you see in Rock Island County or other urban areas to the north.

Mercer County does not have a public online jail roster. To find out if someone is currently in the Mercer County jail, you need to call the sheriff's office. Staff can look up an inmate by name or booking number during regular hours. They will tell you if the person is in custody, what the charges are, and the bond amount. If you call after hours, you may have to wait until the next business day for a full answer.

Every booking creates a record. That record includes the inmate's name, date of birth, charges, arresting agency, and bond amount. This information is public. You have the right to ask about it. Be aware that very recent arrests may not appear in the system right away. It can take several hours for booking records to be fully processed.

Mercer County shares the 14th Judicial Circuit with Rock Island, Henry, Whiteside, and other nearby counties. Criminal cases from Mercer County are heard in circuit court in Aledo.

State Prison Inmate Population Search

When someone from Mercer County is convicted of a felony and sentenced to more than one year, they go to the Illinois Department of Corrections. IDOC manages all state prisons in Illinois. You can look up these inmates using the IDOC Inmate Search tool. The search is free and open to everyone.

Enter a last name, IDOC number, or date of birth. The results show the inmate's current facility, projected release date, and offense details. The IDOC website also has information about each facility, including addresses, phone numbers, and visiting schedules. IDOC holds around 28,900 adults across its prisons statewide. Anyone sentenced out of Mercer County who ends up in state custody will appear in this database.

The western Illinois region has several IDOC facilities within driving distance of Mercer County. If you are trying to visit someone in state prison, check the IDOC site for the specific facility's rules and location.

Mercer County Inmate Records and FOIA

The Illinois Freedom of Information Act at 5 ILCS 140 gives you the right to request records from any public body. This includes the Mercer County Sheriff's Office. You can submit a written FOIA request for inmate population reports, booking logs, daily jail counts, and related data.

Be clear and specific. Name the records you want and the date range you need. The sheriff's office has five business days to respond. They can extend that by five more days with written notice. The first 50 pages are free. After that, they charge at cost for copies. You can send your request by mail, email, or drop it off at the sheriff's office in Aledo. Under 5 ILCS 140/2.15, certain arrest records may be withheld when charges were dropped or the case did not end in a conviction.

For IDOC records, file a separate FOIA request directly with the department. The IDOC FOIA page explains how to submit your request and what to expect.

IDOC handles each request in the order it comes in. Include as much detail as possible, like the inmate's full name and IDOC number if you have it, so they can find the right records quickly.

Visiting Inmates in Mercer County

You can visit someone in the Mercer County jail during scheduled hours. Call the sheriff's office first to confirm the current schedule. Bring a valid photo ID. Leave phones, bags, and food in your car. Rules are strict, and they can change without much notice.

For people in state prison after a Mercer County conviction, IDOC sets the visiting rules. Each facility has its own days and times. You must be on the inmate's approved visitor list before you go. Sign up through IDOC's approval process ahead of time. Before driving to the facility, call the lockdown hotline at (877) 840-3220. A lockdown can cancel all visits for the day without warning.

Inmate Population Alerts for Mercer County

Crime victims and others can get alerts about an inmate through VINELink. This is a free service. It sends a notification when an inmate is released, transferred, or has a change in custody status. VINELink works for both county jails and state prisons in Illinois.

Sign up online or by phone. Pick how you want to be notified: phone call, email, or text. The system runs all day, every day. In a small county like Mercer, release information may not be posted anywhere public. VINELink fills that gap. The Illinois Prisoner Review Board also provides victim services. If the person who harmed you is up for parole, the PRB can notify you about the hearing. Call their victims hotline at 1-800-801-9110.

Legal Help and Inmate Population Data

Mercer County is part of the 14th Judicial Circuit. If you need a lawyer but cannot pay for one, ask the court for a public defender at your first hearing. The circuit clerk's office in Aledo handles case files, hearing dates, and other court documents.

The Uniform Conviction Information Act at 20 ILCS 2635 limits what criminal history data can be shared publicly. Only conviction records are available through this channel. Arrests that did not lead to a conviction may be restricted. The Criminal Identification Act at 20 ILCS 2630 governs how criminal records are created, maintained, and shared statewide. For a formal criminal history check, the Illinois State Police handles those at the state level.

Under 730 ILCS 5/3-5-1, master record files for inmates held by IDOC are confidential. Medical records, mental health evaluations, and internal disciplinary reports all require a court order to access. But basic booking data from the Mercer County jail, such as names, charges, and bond amounts, remains public. Most people searching for Mercer County inmate population data can get what they need through a FOIA request or a call to the sheriff's office.

Nearby Counties

Mercer County is in western Illinois along the Mississippi River. If you are not sure which county an arrest took place in, check the jurisdiction. Each county runs its own jail and keeps separate inmate population records.