Jails & Prisons in Williamson County, Illinois

There are 4 Jails & Prisons in Williamson County, Illinois, serving a population of 67,477 people in an area of 421 square miles. There is 1 Jail & Prison per 16,869 people, and 1 Jail & Prison per 105 square miles.

In Illinois, Williamson County is ranked 51st of 102 counties in Jails & Prisons per capita, and 5th of 102 counties in Jails & Prisons per square mile.

List of Williamson County Jails & Prisons

Find Williamson County, Illinois jails, prisons, detention centers, departments of corrections, and penitentiaries.


Marion Prison 1113 North Carbon Street Marion, IL

Usp Marion 4500 Prison Road Marion, IL

Williamson County Jail 200 West Jefferson Street Marion, IL

Williamson County Jail 404 North Van Buren Street Marion, IL

About Williamson County Jails & Prisons

A Williamson County Jail or Prison is a secure facility located in Williamson County, IL where individuals, referred to as inmates, are involuntarily confined and their freedoms and movement are restricted as a consequence of criminal behavior. Williamson County Jails are short-term facilities where inmates either await trial or sentencing for a crime, or serve relatively short sentences. Williamson County Prisons are longer-term facilities where inmates serve out a prison sentence, usually of a year or more, for their crimes.

You may contact Jails & Prisons for questions about:
  • Locating Williamson County inmates
  • Finding out who is in Jail or Prison
  • Searching for criminal records
  • Performing Williamson County background checks
  • Contacting, visiting and sending money to inmates

Williamson County Jail and Prison Statistics

Find Williamson County Jail Admissions, Jail Admissions By Race, Pretrial Jail Population, and Jail Held Inmates. Data Source: U.S. Bureau of Justice Statistics; National Prisoner Statistics (NPS) Program, Prisoners In 2015.

Williamson County Jail Admissions
Total Jail Admissions3,024
Total Jail Population118
Female Jail Population24
Male Jail Population85
Williamson County Jail Admissions By Race
Asian Jail Population-
Black Jail Population25
Latino Jail Population1
Native Jail Population1
White Jail Population82
Williamson County Pretrial Jail Population
Pretrial Jail Population84
Female Pretrial Jail Population7
Male Pretrial Jail Population96
Williamson County Jail Held Inmates
Jail Population Held for State Prison5
Jail Population Held for Out-of-State Prison1
Jail Population Held for State Jail3
Jail Population Held for Out-of-State Jail1
Jail Population Held for Federal Agencies29
Jail Population Held for ICE-