How To Search Using Cook County Case Numbers

When searching Cook County cases to file into an existing case, you must follow the specific case number format provided by the eFileIL system. You will not be able to find cases using old formats. The format rules listed below is applicable to all eFiling Service Providers (EFSP).

In General...
1. Remove all spaces and dashes from case numbers
2. Always use a 4 digit year (YYYY)
3. Any letters must be CAPITALIZED
4. Use leading zeros for case numbers

 

Specific Formatting and Examples for Cook County Divisions

 

Chancery Division (Format: YYYYCH12345)

For Chancery Division case numbers, you must use the 4 digit year, capitalize CH for division code, and case numbers are 5 digits long.

 

 

Civil Division (Format: YYYY1123456)

For the Civil or municipal division, you must use the 4 digit year, exclude the "M" and use only the district number, and case numbers are 6 digits long.

 

 

County Division

(Format: YYYYCOTD123456)

For the County Division, you must use the 4 digit year, capitalize the division code, and case numbers are 6 digits long.

 

 

Domestic Relations Division (Format: YYYYD123456)

For the Domestic Relations Division, you must use the 4 digit year, capitalize "D" for division code, and case numbers are 6 digits long.

 

 

Law Division (Format: YYYYL123456)

For the Law Division, you must use the 4 digit year, capitalize "L" for division code, and case numbers are 6 digits long.

 

 

Probate Division (Format: YYYYP123456)

For the Probate Division, you must use the 4 digit year, capitalize "P" for division code, and case numbers are 6 digits long.

 

 

 

If you have any questions, please do not hesitate to reach out to us at (844) 340-3096 or email us at helpdesk@infotrack.com.