Search St. Clair County Jail Inmates

St. Clair County Jail Overview

The St. Clair County Jail is operated by the St. Clair County Sheriff's Department at 700 N. 5th Street in Belleville. It is a much larger county jail than the one in Monroe County, and it holds local St. Clair detainees plus contracted detainees from other agencies. The 2024 state inspection of this facility states plainly that it houses detainees for the U.S. Marshals on a contract and for Monroe County if needed. That single line is why a Monroe County resource lists it at all.

It is important to keep the geography straight. This jail is in Belleville, St. Clair County, not in Monroe County. A Monroe County arrest normally routes to the Monroe County Jail in Waterloo. A move to St. Clair is the exception, tied to overflow, a contract, or a federal hold, so it should be a follow-up after Monroe County confirms a placement, not a first stop.

St. Clair County Jail Capacity and Population

The state inspection gives the firm numbers for this facility. The 2024 report lists 409 total beds and a population of 385 people on the inspection day. The jail was built in 1970, with renovations recorded in 1988 and 1994, and the superintendent in the 2024 report is Major Tammy Grime. These figures are single-day inspection counts, like the Monroe County numbers, not yearly averages.

The scale gap matters for families. St. Clair runs at roughly ten times the bed count of the Monroe County Jail, with a full set of vendors and programs that a small county jail does not carry. Those services are listed below and should not be confused with Monroe County's rules.

The inspection-day population of 385 broke down to about 329 men and 57 women, a far larger and more mixed population than the few dozen people held in Waterloo. A jail this size also moves people in and out constantly, so a custody status can change quickly. That is one more reason to confirm a placement directly rather than assume a person stayed where they were first booked.

How to Look Up an Inmate at St. Clair County Jail

Use the agency that controls the person's custody. For a Monroe County case, confirm with Monroe County first, since St. Clair only holds Monroe detainees in special situations. For someone held directly by St. Clair County, contact the St. Clair County Sheriff's Department. For a federal contract detainee, the federal channels apply.

1. For a Monroe County matter, call the Monroe County Sheriff's Department at 618-939-8651 to confirm whether the person was placed at St. Clair.
2. For St. Clair custody, call the St. Clair County Sheriff's Department at 618-277-3505.
3. For a sentenced state prisoner, use the IDOC Individual in Custody Search.
4. For a federal inmate, use the Federal Bureau of Prisons locator; for immigration custody, the ICE detainee locator.

Because St. Clair houses U.S. Marshals contract detainees, a federal pre-trial defendant may not appear in the federal prison locator yet, since that system mainly lists sentenced inmates. The county jail lookup workflow is on the Monroe County jail inmate records page.

St. Clair County Jail Address and Contact

The jail is in downtown Belleville, the St. Clair County seat. Confirm custody, visitation, and any program detail directly with the facility before traveling, since rules and schedules can change.

For a person who was arrested in Monroe County, the Monroe County Sheriff's Department at 618-939-8651 is still the right first call, because Monroe should confirm any transfer before you contact St. Clair.

Visiting Someone at St. Clair County Jail

St. Clair uses its own vendor set, which differs from Monroe County. The 2024 inspection lists telephone, text messaging, video visits, digital mail, and tablets provided by ICSolutions. Confirm the current visit type, scheduling, and identification rules with the facility, since the inspection records the vendor but not a public day-and-time schedule.

Note: do not apply Monroe County's InmateSales video-visit process to St. Clair, since the two jails use different vendors and rules.

Mail, Money, and Commissary at St. Clair County Jail

St. Clair runs its own mail, deposit, and commissary systems. Digital mail and tablets come through ICSolutions, and the inspection lists Keefe Commissary Network for commissary. Because vendors and mailing rules at a large jail change and were not fully published in the sources reviewed, confirm the current mailing address and deposit method with the facility before sending anything.

Sending money or mail to the Monroe County Jail address will not reach a person held at St. Clair, so verify the placement first.

Programs and Services at St. Clair County Jail

The 2024 inspection describes a fuller program set than a small jail can offer. Medical, mental-health, and dental care are provided by Wexford Health Sources. Meals are prepared on site by Aramark. The jail lists support and education programs that a family may want to ask about.

• AA and NA groups, anger management, and an emotions group.
• GED materials provided through Southwestern Illinois College, with GED visits reinstated.
• Religious volunteer visits several days a week and chapel services.
• Medical, mental-health, and dental care through Wexford Health Sources.
• On-site meals prepared by Aramark.

These programs belong to St. Clair County and should not be assumed for the Monroe County Jail, which lists its own programs through the sheriff's correctional division.

Federal Contract Detainees at St. Clair County Jail

One reason St. Clair matters beyond Monroe overflow is its federal role. The 2024 inspection states the jail houses detainees for the U.S. Marshals Service on a contract. Federal pre-trial defendants are often held this way, in a local jail rather than a federal prison, while their case moves through federal court. That is different from sentenced federal custody, which is run by the Bureau of Prisons.

The practical effect is a gap in the usual locators. A federal defendant held at St. Clair under a Marshals contract may not show in the Bureau of Prisons inmate locator yet, because that system mainly lists people who have already been sentenced and designated to a federal institution. For these cases, federal court and the Marshals Service are the right channels, and a blank result in the prison locator does not mean there is no case.

Booking and Custody at St. Clair County Jail

As a large county jail, St. Clair handles a high volume of bookings for St. Clair County arrests plus the contract and overflow population. Intake follows Illinois jail standards, the same baseline that applies to the Monroe County Jail, including identity checks, searches, fingerprinting, photographing under current law, and a medical screening for people who need it. The scale and vendor set are larger, but the legal floor is the same statewide.

For custody and release alerts on a person held in an Illinois jail, VINELink Illinois is the free notification service. For the court side of a case, the charges and hearings are read from the court file, which is searched separately from any jail record.

When to Check St. Clair Instead of Monroe County

For a Monroe County arrest, the Monroe County Jail in Waterloo is the normal place to look. St. Clair becomes relevant only when Monroe County, the court file, or an agency indicates an overflow placement, a contract hold, or a federal matter. A person sentenced to state prison leaves both jails for IDOC custody, and a federal defendant may move between a contract jail and the federal system. Confirm the controlling agency before you travel, write, or send money.

In short, treat St. Clair as a second stop, not a first one. Start every Monroe County search with the Monroe County Sheriff's Department, let that office confirm where the person is held, and only then turn to St. Clair, the state locator, or the federal channels. That order keeps the search accurate and avoids sending mail or money to the wrong facility.