County Jail medium ✓ Verified August 2026

Jefferson County IL Jail

911 E Casey Ave, Mt. Vernon, IL 62864 ·Jefferson County ·Capacity: 249 ·618-244-8015
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📍 Jefferson County IL Jail · Mt. Vernon, IL

Jefferson Co Jail in Mt. Vernon, IL is a county detention facility operated by the Jefferson County Sheriff's Office. Most people here are awaiting trial or sentencing - this is not a prison, and most stays are measured in days or months, not years. If someone you care about was just booked here, you have questions. Start with the one that matters most right now.

Is my family member at Jefferson Co Jail?

If you are not certain they are there, the fastest way to confirm is the Jefferson County inmate search or InmateAid's inmate locator, which searches across Illinois facilities by name.

Booking takes time - sometimes several hours after arrest. If the search comes back empty, wait a few hours and try again before assuming they have been transferred somewhere else. You can also pull their arrest record and booking details to confirm the charges and facility assignment. For the most direct answer, call Jefferson Co Jail at 618-244-8015.

Official Inmate Search ↗ Current location, custody status and identifying number VINE — Victim Notification ↗ Automatic alerts on custody status changes
How do I get them out on bail?

Most people booked at Jefferson Co Jail appear before a judge within 24 to 48 hours. At that first appearance the judge sets the bail amount - or denies bail - based on the charges, the person's history, and whether they are considered a flight risk.

If bail is set, your family member can be released by paying the full amount or by using a bail bondsman, who typically charges 10 percent of the total as a non-refundable fee. If bail is denied or the amount is unaffordable, they remain at Jefferson Co Jail until the case resolves. InmateAid's bail and bond guide walks through every option including what to do if you cannot afford a bondsman.

What is happening to them right now?

Right after arrest, your family member goes through intake at Jefferson Co Jail - identity verification, medical screening, property inventory, and classification. Classification places them in a housing unit based on the charges, prior record, and intake behavior. It is not a punishment. It is how the facility manages a population that ranges from people picked up on minor warrants to individuals facing serious charges.

For the first 24 to 48 hours, phone access and visitation are typically unavailable while booking completes. Once they are assigned to a housing unit, those channels open up. InmateAid's what happens in jail guide covers the full intake process step by step so you know what to expect.

How do I talk to them by phone?

Your family member calls you - you cannot call them. Calls from Jefferson Co Jail go through Global Tel Link (GTL) - ConnectNetwork and all calls are recorded except attorney calls. Set up a Global Tel Link (GTL) - ConnectNetwork account before the first call so the connection goes through without delay.

Phone contact is more important than most people realize going into this. A regular call - even a short one - makes a measurable difference in how someone holds up inside. Do not let the setup friction stop you. Visit InmateAid's jail calls page for step-by-step account setup, current rate information, and tips for keeping funds available.

Global Tel Link (GTL) - ConnectNetwork ↗ Contracted phone carrier — account setup and rates
When can I visit and what are the rules?

Visitation hours at Jefferson Co Jail are set by the facility and can change without much notice. Before making the trip, call 618-244-8015 to confirm current hours, any advance registration requirements, and what you are allowed to bring.

The most common mistake families make is showing up without confirming first - and that results in a wasted trip and a missed visit for your family member. General rules across most Illinois county jails: dress conservatively, avoid colors that resemble inmate uniforms, leave your phone in your car, and bring valid government-issued ID. Children may be permitted with specific requirements depending on the facility. InmateAid's visitation guide has a full checklist you can run through before you go.

Jefferson County Jail, Illinois - Visitation Information

Visitation Schedule:
Visitation at Jefferson County Jail is available daily, with morning hours from 8:00 AM to 11:00 AM and evening hours from 1:00 PM to 8:00 PM. No visitation is permitted during meal times, which are 11:00 AM to 1:00 PM and 5:00 PM to 6:30 PM. All visitation is subject to cancellation at any time.

On-Site Visitation Rules

All on-site visits must be scheduled at least one day in advance by calling 1-866-340-7879. Visits are scheduled on a first-come, first-served basis. Each inmate is allowed two (2) 20-minute on-site video visits per week.

Visitors must meet the following requirements:

  • A valid photo ID is required for all visitors.
  • Visitors must be 18 years or older to visit alone. Minors must be accompanied by an adult.
  • Individuals who have been incarcerated at the facility within the past 90 days are not permitted to visit.
  • Victims of the inmate they intend to visit will not be allowed visitation.
  • Prohibited items in the visitation area include food, drinks, candy, cell phones, and purses.

Children accompanying visitors must remain under control at all times. Disruptive behavior, including loud talking, running, or tampering with visitation equipment, may result in the termination of the visit.

Off-Site Video Visitation

For added convenience, Jefferson County Jail offers remote video visitation through www.jailatm.com. Off-site visits are subject to the same dress code as on-site visits. Any violation of the dress code may result in a 90-day suspension from video visitation and email privileges.

Visitor Dress Code

All visitors aged 12 and older must adhere to the facility’s dress code:

Female Visitors:

  • Shorts must fully cover the buttocks and crotch areas when sitting or standing.
  • Skirts and dresses, including those with slits, must extend to mid-thigh when seated.
  • See-through clothing is prohibited.
  • Tops must cover the underarm area in the front and back. Bare midriffs, strapless tops, tube tops, and swimsuits are not permitted.
  • Shoes must be worn at all times.
  • Gang-related attire, colors, and symbols are strictly prohibited.

Male Visitors:

  • Shorts must fully cover the buttocks and crotch areas when sitting or standing.
  • Shirts must be worn at all times. Muscle shirts, sleeveless shirts, and bare midriffs are not permitted.
  • Shoes must be worn at all times.
  • Gang-related attire, colors, and symbols are strictly prohibited.

Failure to adhere to any visitation rule may result in visitor bans or suspension of privileges.

All visitation is subject to cancellation at any time.

For further details, contact Jefferson County Jail at (618) 244-8015.

⚑ Full visitation information, times & rules
How do I put money on their books?

Money on the books - also called the commissary or trust account - gives your family member access to hygiene items, snacks, phone time, and postage. It is one of the most practical things you can do and it has a direct effect on their daily comfort.

Jefferson Co Jail accepts deposits through approved channels that typically include online deposit, phone deposit, or a kiosk at the facility. Use your family member's full legal name and booking number exactly as they appear in the jail's system - any error in the name or number will delay or reject the deposit. InmateAid's send money page lists the specific deposit methods accepted at Jefferson Co Jail and walks through the process.

JailATM™ ↗ Commissary and trust-account deposits
How do I send letters or photos?

A letter or a printed photo costs almost nothing to send and means far more than most people outside appreciate. Jefferson Co Jail accepts incoming mail addressed to your family member at 911 E Casey Ave. Put their full legal name and booking number on every piece of mail.

Standard rules at most Illinois county jails: plain white paper only, no staples, no glitter, no stickers, no colored ink. Photos should be standard print size with nothing written on the back. Mail that does not meet the facility's standards will be rejected - and the facility may not notify you that it was. Keep it simple.

InmateAid's send mail service lets you write and send directly from your phone or computer. We print on approved stock and mail it for you, so rejection for formatting is not a risk.

Books and magazines must come new, ordered directly from the publisher or through an online retailer - not shipped from your home address. Facilities require this to prevent contraband. Order through Amazon or directly from the publisher. Anything shipped from a personal address will be turned away.

Inmate Mailing Address
[Inmate Full Legal Name]
ID #: [Inmate Number]
Jefferson County IL Jail
17 Junction Dr. #272
Glen Carbon, IL 62034
What else should I know about Illinois jails?

County jail procedures, visitation rules, phone rates, inmate search tools, bail processes, and what happens at release all vary by state. Illinois has its own rules and its own agencies, and what applies in one state does not always apply here.

InmateAid's Illinois prison resources hub covers all of it - written specifically for families navigating the Illinois system. Start there when you need answers that go beyond what this facility page covers.

Official Resources

County jail time is hard in a way that is different from anything else. The uncertainty - not knowing how long, not knowing what comes next - wears on everyone. What you can control is the connection. Calls, letters, visits, money on the books. Every one of those things tells your family member that someone out here is paying attention and is not going anywhere.

InmateAid was built for exactly this. Use us.

About this page — Information is compiled from official facility sources, state DOC guidelines, and verified family reports. Last updated August 2026.