Jefferson County Justice Center - Former ICE Detention Use
Jefferson County Justice Center - Former ICE Detention Use
Former ICE Detention Use / Current County Justice Center RecordMailing Address
VERIFY CURRENT CUSTODY FIRST. For current county detainees use the Jefferson County Justice Center procedure at 911 Casey Avenue, Mount Vernon, IL 62864. Do not assume current ICE detention at this record.
Physical Address
911 Casey Avenue, Mount Vernon, IL 62864
Phone
Governing Agency
Jefferson County Sheriff's Office
Inmate ID
Current county inmate ID or ICE A-Number as applicable — Not required
Last Verified
September 27, 2026
Facility Mailing and Service Information
Verify current county or ICE custody before mailing.
Source: Official sourceLast verified: September 27, 2026
Follow the current receiving facility's rules.
Source: Official sourceLast verified: September 27, 2026
Follow the current receiving facility's rules.
Source: Official sourceLast verified: September 27, 2026
Use the current receiving facility's deposit system.
Source: Official sourceLast verified: September 27, 2026
Verify the person's actual current facility before planning a visit.
Source: Official sourceLast verified: September 27, 2026
How to Address Your Letter
This row represented Jefferson County Justice Center's former ICE detention use. Current county detention operations remain at 911 Casey Avenue, but ICE-specific detention at this site should not be assumed. Verify the person's current location before mailing.
About Jefferson County Justice Center - Former ICE Detention Use
Jefferson County Justice Center remains the county detention facility in Mount Vernon. This separate row is retained only to distinguish its former ICE detention use.