Search Cook County Arrest Records

Cook County arrest records cover the largest county in Illinois and one of the most populated in the nation. With over five million residents spread across Chicago and dozens of suburban cities, Cook County generates a high volume of arrest data each year. The Cook County Sheriff's Office, the Chicago Police Department, and many local police agencies all produce arrest records that fall under public access rules. These records can be searched through multiple portals and requested by anyone under the Illinois Freedom of Information Act (5 ILCS 140/1).

Cook County Sheriff's Office

The Cook County Sheriff's Office sits at 50 W. Washington St., Room 704, Chicago, IL 60602. This office holds arrest records, order of protection files, Fire Investigation Task Force records, accident reports, and incarceration records. The sheriff's office serves all of Cook County outside Chicago city limits, though it also runs the county jail that houses detainees from every part of the county. Staff can help with records requests during normal hours.

Cook County is unique in Illinois because of its sheer size. The county has its own Department of Corrections, a separate court system, and multiple law enforcement agencies that each keep their own arrest data. Getting the right record means knowing which agency made the arrest. If the Cook County Sheriff made the arrest, you go through their office. If a city police department made it, that department holds the original record. The sheriff's office can still help point you in the right direction.

How to Search Cook County Arrest Records

There are several ways to look up arrest records in Cook County. The fastest method is the online Cook County inmate search tool. This database holds records from the Cook County Department of Corrections. You can search by name to find current inmates and recent booking data. The system shows charges, bond amounts, and court dates for people in custody.

For court case records tied to arrests, the Circuit Court of Cook County runs its own search at the Richard J. Daley Center, 50 West Washington Street. You can call (312) 603-5030 for help with case lookups. This portal shows criminal case filings, hearing dates, and case dispositions. It covers cases from across Cook County's court system.

The Chicago Police Department also offers RAP sheet access. You can get a copy at Chicago PD Headquarters in the Public Access Information Room on the first floor, Window #1. Hours run Monday through Friday, 8:30 a.m. to 12:00 p.m. The fee is $16.00. A RAP sheet gives you a person's full arrest and criminal history as maintained by that agency. This is separate from what the Cook County Sheriff holds.

The Illinois State Police Bureau of Identification at isp.illinois.gov also keeps criminal history records. You can use the CHIRP system to run a name-based search. This pulls from the statewide criminal history database and may show Cook County arrests alongside records from other parts of the state.

FOIA Requests for Cook County Arrest Records

The Illinois Freedom of Information Act (5 ILCS 140/1) gives the public a right to access government records, and that includes arrest records. To file a FOIA request with the Cook County Sheriff's Office, you can email sheriff.foia@cookcountyil.gov or send a fax to (312) 603-4557. Phone inquiries go to (773) 674-5245. Put your request in writing and be as specific as you can about what you need.

One thing worth knowing: Cook County provides the first 50 pages of any FOIA response at no cost. That is more generous than many other counties in the state. If your request pulls more than 50 pages, you will pay a per-page fee for the rest. The agency has five business days to respond, though they can take a five-day extension if needed under the law.

Under 5 ILCS 140/2.15, law enforcement must make certain arrest information available within 72 hours. This includes the name of the person arrested, the charges, and the arresting agency. That rule applies to Cook County just like it does everywhere else in Illinois.

What Cook County Arrest Records Contain

A Cook County arrest record holds key facts about an incident. It shows the full name of the person arrested, their date of birth, and a physical description. The record lists each charge, the date and time of the arrest, and the arresting officer or agency. Booking data from the county jail adds a booking number, mugshot, and intake details.

Court records tied to the arrest go further. They show case numbers, hearing dates, plea entries, and final dispositions. If charges were dropped or the person was found not guilty, that shows up too. Records from the state system under the Uniform Conviction Information Act (20 ILCS 2635/1) focus on conviction data specifically. Arrest records that did not lead to a conviction may still be accessible through FOIA, but sealed or expunged records are not available to the public. The Illinois State Appellate Defender's office at osad.illinois.gov has details on the sealing and expungement process.

Legal Resources in Cook County

Several agencies and legal aid groups serve Cook County residents who need help with arrest records or the criminal justice process. The Illinois FOIA statute outlines public access rights. The Uniform Conviction Information Act (20 ILCS 2635/1) governs how conviction data is shared. For arrest authority rules, 725 ILCS 5/107-2 spells out when law enforcement can make an arrest in Illinois.

The Cook County Circuit Court Clerk's office is at the Daley Center and handles requests for court records. The ISP fee schedule lists costs for criminal history checks at the state level. You can also look into fingerprint-based searches through approved vendors if you need a more thorough criminal history search tied to Cook County or statewide records.

Cities in Cook County

Cook County includes Chicago and many suburban cities. The following cities have their own arrest records pages with details about local access points and procedures:

• Chicago
• Cicero
• Evanston
• Skokie
• Des Plaines
• Orland Park
• Oak Lawn
• Berwyn
• Mount Prospect
• Tinley Park
• Oak Park
• Schaumburg
• Arlington Heights
• Hoffman Estates
• Palatine
• Glenview
• Buffalo Grove
• Elk Grove Village
• Niles
• Northbrook
• Park Ridge
• Wheeling
• Burbank
• Lansing
• Oak Forest
• Chicago Heights
• Calumet City
• Wilmette
• Hanover Park
• Streamwood

Nearby Counties

Cook County shares borders with several other Illinois counties. Each has its own sheriff's office and arrest records system:

• DuPage County
• Lake County
• Will County
• Kane County