Jefferson County IL Jail is located in the city of Mt Vernon, Illinois which has a population of 15,277 (as of 2016) residents. This prison has a capacity of 249 inmates, which means this is the maximum amount of beds per facility. Jefferson County IL Jail began processing inmates once the original construction was completed and service started in 1820 but may have been expanded or renovated since that time, to accommodate the growing prison population. Prisoners are housed in separate areas depending on the crimes they committed, their current risk assessment, and their behavior. This facility is currently under the supervision of Sheriff Travis Allen and houses male and female offenders.

If you have a family or loved one that is currently incarcerated at Jefferson County IL Jail, the first thing you should do is contact the prison for information on the inmate. Based on the information you are provided, you would then contact either a criminal defense lawyer or a bail bond service. They will provide you with vital information which can be used to defend an individual and in a lot of cases get them released from detention while awaiting trial.

Jefferson County IL Jail Facility and Inmate Contact Information:

Phone Number to Reach this Facility is:

618-244-8015

Fax Number for Jefferson County IL Jail is:

618-244-8999

Email Address for this Facility:

[email protected]

Send Mail to the Facility (not inmates):

Jefferson County IL Jail
911 Casey Avenue
Mt. Vernon, IL 62864

To Send Mail to an Inmate at Jefferson County IL Jail:

(please get a list of acceptable mail from the facility)

Jefferson County IL Jail
Inmate Name, Inmate ID #
911 Casey Avenue
Mt. Vernon, IL 62864

Visitation Information for Jefferson County IL Jail

Visitation Hours for Jefferson County IL Jail: