Welcome to CJ DataNet, an Internet clearinghouse of criminal justice data for the State of Illinois.

The Authority collects, maintains and updates a variety of criminal justice data to support its research and evaluation efforts. These data can be used to research broad issues facing the criminal justice system or to simply examine crime problems in a specific Illinois city, county or regional area.

For questions, assistance, for the most updated data, or if you do not locate the data your seeking please contact the Criminal Justice Information Clearinghouse at 312-793-8550 or email cja.irc@illinois.gov.