Find Someone in the Cook County Jail System
Use the Cook County Sheriff’s official Individual in Custody Locator to check a person’s booking number, custody status, housing division and available case information.
This guide also explains what to do when a new arrest does not appear, how to check court dates, follow a discharge, arrange visitation, add money and send mail correctly.
Choose What You Need to Do
How to Search the Cook County Jail Roster
Cook County uses the term “Individual in Custody” instead of inmate on its official website. The locator is the county’s current searchable jail-roster tool.
Open the official Sheriff’s locator
Go directly to the Cook County Individual in Custody Locator. Avoid websites asking for payment merely to view a current Cook County jail result.
Accept the terms and begin the search
Read the terms shown on the locator, select the agreement option and choose Start. The same portal also connects approved visitors with visitation services.
Enter the person’s identifying information
Use the legal name associated with the arrest. Try the complete first and last name first. A booking number is the strongest identifier when you already have it.
Match the correct person carefully
Compare identifying details rather than relying on the name alone. People with identical or similar names may appear in the same system.
Save the booking number and housing code
Copy the booking identification number exactly. You may need it for visitation, deposits, mail, discharge tracking and calls to the jail.
Best first move: take a screenshot or write down the booking number, current housing location, next court information and custody status before leaving the result.
How to Read a Cook County Inmate Search Result
| Result field | What it usually means | What to do with it |
|---|---|---|
| Booking number | The jail’s identifying number for the custody record. | Use it for mail, funds, visitation and discharge checks. |
| Custody status | Indicates whether the person is currently held or has changed status. | Confirm status again before traveling to the jail. |
| Housing location | The jail division and living unit where the person is assigned. | Use the division code to review visitation arrangements. |
| Booking date | The date the jail processed the person into its custody system. | Do not assume this is identical to the arrest or offense date. |
| Charge information | Allegations or case information associated with the detention. | Verify legal case details through the Circuit Court Clerk. |
| Court date or location | The next currently recorded hearing information, when available. | Recheck the court docket because dates and courtrooms can change. |
| Discharge status | Shows progress toward release after authorization is received. | Use the official discharge tracker before going to pick someone up. |
A listed charge is an allegation, not proof of guilt. Cases may be amended, dismissed, transferred or resolved differently from the initial booking information.
Why a Newly Arrested Person May Not Appear
Cook County says locator information is generally published about 4–6 hours after booking and processing. An arrest can therefore be real even when the person is not yet visible in the jail search.
Wait for intake, fingerprinting, medical screening and record processing.
Next: search again later or call 773-674-5245.
Some people leave after court or pretrial processing before a complete jail profile appears.
Next: check the court case and contact the arresting agency.
Hyphens, compound surnames, aliases and reversed first/last names can cause missed matches.
Next: retry using fewer name fields and alternate spellings.
A Chicago arrest does not always mean the person has entered the Cook County Jail.
Next: call the arresting police department or other listed facility.
Federal custody may not be represented as a normal county jail result.
Next: check the ICE Detainee Locator when immigration custody is a genuine possibility.
Juvenile information and protected records may not be publicly searchable.
Next: contact the appropriate attorney, guardian or juvenile court office.
“I am trying to confirm whether a person was processed into Cook County custody. The full legal name is [name], date of birth is [date], and the arrest may have occurred on [date] near [location]. Can you tell me which agency or information line I should contact?”
Check the Cook County Criminal Court Case
The jail locator answers where a person is being held. The Clerk of the Circuit Court’s case-information service is the better place to investigate the court docket, hearing activity and general case status.
Open the Clerk’s online case-information page
Visit the Cook County Clerk of the Circuit Court case-information service .
Search with the case number when possible
A case number generally produces a cleaner match than a common defendant name. Copy it from the jail result or court paperwork when available.
Verify the courthouse and next hearing
Review the courthouse, courtroom, hearing date and docket entries. Recheck shortly before attending because court assignments can change.
The Clerk explains that online docket information is a public convenience and is not the official court record. Recent filings may take several days to appear. For urgent or certified information, contact the courthouse or use an official public-access terminal.
How to Track a Cook County Jail Release
A judge’s release order or completed bond transaction does not mean the person will immediately walk out of the facility. Staff must review paperwork, clear holds, return property and complete the discharge process.
Get the booking number
Retrieve it from the official jail locator or the person’s paperwork.
Open the official discharge tracker
Use the Cook County Detainee Discharge Tracker to follow the booking number through the release stages.
Wait for a completed discharge status
The tracker warns that the process can take up to approximately five hours and that some circumstances may cause additional delay.
Do not assume the person has been released simply because a court hearing ended or a payment was accepted. Another warrant, agency hold, electronic-monitoring requirement or paperwork issue can delay discharge.
Bond, Bail and Pretrial Release
Illinois changed its pretrial-release system on September 18, 2023. Cook County explains that newly filed cases generally no longer use the older system in which a person had to pay money for pretrial release. Cases filed before that date may still contain a cash-bond requirement.
Primary bonding location
Division 5
2700 S. California Ave.
Chicago, IL 60608
Listed hours: 10:00 a.m.–6:00 p.m., 365 days a year
Before paying anything
Confirm the case date, release order and exact amount.
Check for another hold or warrant.
Bring valid photo identification and the actual payment card when required.
| Payment or release detail | Official guidance |
|---|---|
| Cash, bank check or cashier’s check | Listed as accepted methods for applicable bond payments. |
| Personal check or money order | Not accepted for bond payment. |
| Credit or debit card | Must be handled in person at 2700 S. California Avenue for applicable cash bail. |
| Card service fee | The Sheriff lists a nonrefundable 2.13% fee. |
| Release after posting | Processing may take several hours and can take longer when GPS monitoring is required. |
Review the current Cook County Sheriff bonding instructions before traveling or attempting payment.
Cook County Jail Visitation Steps
Find the person and housing division
Use the jail locator or call 773-674-5245. The first part of the housing code identifies the jail division.
Submit a visitor application when required
The official locator states that adults wishing to visit must complete a visitor application and pass the approval process. A separate application may be needed for each individual being visited.
Allow time for the background check
Cook County instructs applicants to allow seven business days after submitting an application before asking about its status.
Schedule the approved visit
Use the official in-person visitation scheduler . The person in custody may also need to add the visitor to the appropriate visitation list.
Bring matching valid photo identification
The identification must be current and match the identity used in the application. Visitors are subject to screening, dress requirements and behavior rules.
| Visitor question | Practical answer |
|---|---|
| Who handles scheduling questions? | Visitor Information Center: 773-674-8225 or 773-674-8194. |
| Do minors submit an adult application? | Minors age 17 or younger generally do not submit the adult application but must be accompanied by an approved parent or guardian. |
| Can visitors bring personal items? | Items are highly restricted. Empty pockets and bring only what current rules allow. |
| Are video visits available? | Cook County provides family video-visit information through Microsoft Teams, subject to current approval and scheduling procedures. |
| Are disability accommodations available? | Yes. The listed ADA Compliance Officer number is 773-674-7768. |
Visit approval is not guaranteed. Open criminal cases, warrants, recent discharge from a correctional facility, probation or parole restrictions, protective orders and security concerns can affect eligibility.
Receiving Calls From the Cook County Jail
Friends and relatives can establish a prepaid telephone account through the Sheriff’s listed communications provider. Individuals in custody place the calls; members of the public cannot directly call a jail housing unit and ask to be connected.
Account assistance
GTL/ConnectNetwork friends-and-family support:
Published call rates
Local, intrastate and interstate: $0.05 per minute
Mexico and Canada: $0.08 per minute
Other international: $0.13 per minute
Confirm rates and account rules before adding funds because service-provider terms can change. Never give account passwords or verification codes to an unknown caller.
Add Money to an Individual’s Trust Account
You need the person’s exact name and booking number as displayed by the Sheriff’s locator. Cook County lists Western Union, MoneyGram, JailATM, approved currency exchanges, lobby kiosks and mail as deposit options.
| Method | Code or requirement | Expected processing |
|---|---|---|
| Western Union | City code: CCDOC or Cook County Dept Correction; State: Illinois | Online deposits may take 1–2 business days to post. |
| MoneyGram | Receive code: 1750 | Online deposits may take 1–2 business days to post. |
| JailATM | No agency code listed; register and select the correct recipient. | Posting may take 1–2 business days. |
| Money order by mail | Maximum single money order: $100 | May take up to five business days after receipt. |
| Cashier’s check by mail | Maximum single cashier’s check: $1,000 | May take up to five business days after receipt. |
| Cash through the mail | Not accepted under any circumstances | Do not send it. |
Verify all details on the official trust-account page before submitting money.
Cook County Jail Mailing Address and Format
[INDIVIDUAL’S FULL NAME][BOOKING NUMBER]
2700 S. California Ave.
Chicago, IL 60608
Confirm current custody first
Do not mail a letter until the locator confirms the person is in Cook County custody.
Write the exact name and booking number
Missing or inaccurate identification can delay delivery or cause the mail to be returned.
Keep the contents simple and compliant
Do not spray the paper with perfume, cologne or another substance. Do not send food, clothing, tobacco, cash, jewelry, electronics, metal items or other prohibited property.
Put a complete return address on the envelope
Use the sender’s real name and mailing address in case the jail returns the letter.
Review the current Cook County jail mail rules before sending photographs, publications, cards or anything beyond an ordinary letter.
Booking Photos, Arrest Records and FOIA Requests
When available, the booking image may appear in the Sheriff’s Individual in Custody Locator after processing.
Contact the arresting agency first. A person released before full booking may never receive a normal locator photograph.
Submit a request through the Cook County Sheriff FOIA page .
Use the Clerk of the Circuit Court rather than the Sheriff when the requested document is part of the criminal court file.
The Cook County Sheriff and Chicago Police Department are separate agencies. Send a request to the agency that created or maintains the specific record. A Sheriff FOIA request is not a substitute for a complete statewide criminal-history check.
Important Cook County Jail Phone Numbers
| Service | Phone | Use it for |
|---|---|---|
| Customer Service Main Line | 773-674-1945 | General bonding, discharge, property, court, trust-fund and corrections questions. |
| Automated Help Line | 773-674-5245 | Custody search, housing, visitation, trust, mailroom and records menu options. |
| Visitor Information Center | 773-674-8225 | Visitor application and visitation questions. |
| Individual in Custody Services | 773-674-1979 | Service-related questions for individuals currently held. |
| Legal Office | 773-674-7683 | Official legal-office inquiries. |
| Electronic Monitoring | 877-326-9198 | Cook County electronic-monitoring questions. |
The Sheriff lists the main customer-service line as available seven days a week from 8:00 a.m. to 8:00 p.m. Leave a clear callback number and reason when directed to voicemail.
Cook County Jail Address and Map
2700 S. California Avenue
Chicago, IL 60608
The jail is a multi-division complex. Visitation entrances, bonding services and property services may use different buildings or entrances. Confirm the correct division before arriving.
Open Driving DirectionsBefore You Visit, Pay or Send Anything
- Never pay a stranger who promises an immediate release.
- Do not send cash through the mail.
- Do not rely on an old screenshot for current custody or court status.
- Verify court information through the Clerk, not only through a booking result.
- Contact a licensed attorney for legal strategy or case-specific advice.