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Cook County Jail and Prison Communication Guide

Find the correct messaging, phone call, video visitation, and money transfer provider for correctional facilities in Cook County, Illinois. Using the wrong provider is the most common mistake families make. This directory shows you exactly which platform to use before you sign up.

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Cook County is home to Chicago and is one of the most populous counties in the United States. Cook County Jail on South California Avenue is one of the largest single-site jails in the country, capable of housing thousands of individuals in custody. GTL ViaPath ConnectNetwork became the phone service provider for Cook County Jail in September 2021, replacing the previous provider Legacy Inmate Communications.

Text messaging at Cook County Jail is available through ViaPath at a fee of $0.06 per message. This is separate from phone call services. To set up phone accounts, call GTL ConnectNetwork at 877-650-4249 or visit connectnetwork.com. You will need the inmate booking number to set up any communication account. Use the Cook County Sheriff's Individual in Custody Locator at cookcountysheriff.org to find the booking number and confirm the current facility.

Cook County operates multiple correctional facilities in addition to the main jail on California Avenue. Always confirm which specific facility your loved one is held at before setting up accounts or sending mail. The Cook County Sheriff's Office can be reached at 773-869-7100 for general information about individuals in custody.

Which provider do Cook County jail families use?

GTL ViaPath ConnectNetwork handles phone calls at Cook County correctional facilities. Call 877-650-4249 or visit connectnetwork.com to set up a prepaid account. ViaPath handles text messaging at $0.06 per message. You need the inmate booking number for all account setup. Find it using the Individual in Custody Locator at cookcountysheriff.org.

What is the booking number and where do I find it?

The booking number is the identification number assigned when someone is booked into Cook County custody. It is required for phone account setup, messaging, money deposits, and mail. Find it using the Cook County Sheriff's Individual in Custody Locator at cookcountysheriff.org or by calling the Sheriff's Office at 773-869-7100.

What is the most common mistake Cook County jail families make?

Using an outdated provider is very common. Cook County Jail switched from Legacy Inmate Communications to GTL ViaPath ConnectNetwork in September 2021. Families who set up Legacy accounts after the switch were unable to receive calls. Always confirm the current provider at cookcountysheriff.org before setting up any account.

Communication Providers in Cook County

These providers serve facilities in Cook County. The correct provider depends on the specific facility.

Correctional Facilities in Cook County

Select a facility to find the correct provider and communication options for that specific location.

Frequently Asked Questions for Cook County

Which provider handles phone calls at Cook County Jail?
GTL ViaPath ConnectNetwork handles phone calls at Cook County Jail since September 2021. Call 877-650-4249 or visit connectnetwork.com to set up a prepaid account. You need the inmate booking number to set up the account. Cook County previously used Legacy Inmate Communications which is no longer active.
How do I send text messages to someone at Cook County Jail?
Text messaging at Cook County Jail is available through ViaPath at $0.06 per message. Visit the Cook County Sheriff's phone account page at cookcountysheriff.org for the current messaging setup link. This is separate from the phone call account. You need the inmate booking number to set up messaging.
How do I find someone at Cook County Jail?
Use the Cook County Sheriff's Individual in Custody Locator at cookcountysheriff.org. Search by name to find the booking number, current facility, and basic information. You can also call the Sheriff's Office at 773-869-7100 for assistance. Always confirm the specific facility before setting up accounts or sending mail.
How do I send money to someone at Cook County Jail?
Money can be deposited through GTL ConnectNetwork at connectnetwork.com for phone account credits. For inmate trust account commissary deposits, check the Cook County Sheriff's website at cookcountysheriff.org for the current approved deposit methods. Always include the inmate booking number on all transactions.
Are phone calls free at Cook County Jail?
No. Cook County Jail phone calls are not free. GTL ConnectNetwork holds the contract and charges per-minute rates subject to FCC caps effective April 2026. Rates are capped at $0.11 per minute for large jails. Illinois state prisons have a partial free call program but county jails are not included.
How do I schedule a video visit at Cook County Jail?
Video visits at Cook County Jail can be scheduled through the GTL Friends and Family platform. You must be on the inmate's approved visitor list. Contact the Cook County Sheriff's Office at 773-869-7100 or visit cookcountysheriff.org for current video visit scheduling procedures and available time slots.
What address do I use for mail to Cook County Jail?
The main Cook County Jail address for mail is 2700 South California Avenue, Chicago, Illinois 60608. Always include the inmate's full name and booking number on the envelope. Mail is inspected before delivery. Check cookcountysheriff.org for any current mail restrictions or changes before sending correspondence.
What happens when my loved one transfers from Cook County Jail to Illinois state prison?
When someone transfers from Cook County Jail to an Illinois IDOC state prison, the provider changes to ICSolutions. Illinois state prisons offer a partial free calling program through Voices of Connection providing 775 free monthly minutes. Create a new ICSolutions account at icscorrections.com after confirming the transfer and obtaining the IDOC number.