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Boone County jail information.
Illinois. By facility.

One local jail holds people arrested in Boone County: Boone County Jail. Its guide has the address, phone, visiting, mail and money details families need.

All Illinois counties Facility information, not live custody records.
Local adult custody

Boone County Jail

615 North Main Street
Belvidere, IL 61008
Call the jail
(815) 547-6203
Sheriff's office
815-544-9322
Location
Belvidere, IL
Open the facility guide Directions

Housing and release status change. Confirm the person is still here before driving, mailing or depositing money.

The local jail

Open a facility for its address, phone and family rules.

Sheriff and police in Boone County

2 listed agencies. The arresting agency is usually not the holding facility.

Boone County Sheriff / Boone County Jail

Sheriff's office
615 North Main Street
Belvidere, IL 61008
Directions
Non-emergency(815) 544-9322

Practical information.
Before you visit, call or send.

Start with the general process. Then use the Boone County Jail guide for the local details available there.

Visiting

Schedules, visitor approval, identification and arrival.

Read the guide

Phone calls

Calling accounts, approved providers and connection issues.

Read the guide

Mail & photos

Mailing addresses, permitted contents and delivery rules.

Read the guide

Money & commissary

Deposit methods, account types and fees to check.

Read the guide

Different custody systems.
Different places to start.

A Boone County arrest usually means the county jail. A state sentence, a federal case or an immigration hold means a different system with its own locator and rules.

Understand jail and prison differences

Clear information.
Clear boundaries.

Jail411 is an independent information resource for families and friends. We are not a government agency, jail operator, law firm or live custody-records service.

Who holds someone arrested in Boone County?

Usually Boone County Jail, (815) 547-6203. The arresting agency books the person and the jail holds them; ask the jail what holds are on the booking before you act on anything.

Does posting bond mean the person comes home?

Not always. A probation or parole hold, another county\'s warrant, or an immigration detainer can keep someone in custody after bond is posted. Ask the jail what holds are on the booking, and ask the bondsman what happens if there are, before you pay.

What should I confirm before visiting?

Confirm the person\'s current facility, the visiting schedule, approval requirements, accepted identification and arrival instructions. Check the facility guide before you travel.

What if I find something that needs correcting?

Send us the page and the detail that needs attention. Do not send private booking documents or other sensitive personal information.

YOUR FAMILY REFERENCE

Plan the next step.

Practical guides for calls, visits, mail, money and release.

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Jail411 source information preserved on 2026-09-25.Official sources appear alongside the relevant information.