At the Cook County State’s Attorney’s Office (CCSAO), our unwavering commitment to transparency drives our mission.
Historically, the public has had limited access to the intricacies and outcomes of our vital work. State’s Attorney Kim Foxx, upon taking office in December 2016, pledged to transform this dynamic. She recognizes that the credibility and effectiveness of both the CCSAO's operations and public discourse on criminal justice rely on data rather than anecdotes, and it is our duty to generate and facilitate understanding of this essential information.
"Our work must be grounded in data and evidence, and the public should have access to that information.” - SA Foxx
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Open Data
A core component of the CCSAO's commitment to data transparency under State's Attorney Foxx is the regular release of case-level datasets containing anonymized information about every felony case processed by the CCSAO (dating back to roughly 2010). Divided into four categories by stages of interaction with the CCSAO — Intake, Initiation, Sentencing, and Disposition — these datasets, containing tens of millions of data points and representing hundreds of thousands of distinct cases, provide an unobstructed view of the CCSAO's work on behalf of the taxpayers of Cook County.
To access open-data resources, click here
How to Read Open Data
The Cook County State’s Attorney’s Office (CCSAO) publishes five case-level data sets with information on approximately 400,000 defendants and 1,000,000 charges. Each data set represents one step in the lifecycle of a felony case, including intake, initiation, and disposition (of which sentencing and diversion are more detailed outcomes). The data includes only adult, criminal felony cases. Juvenile cases are not included.
Data Updates
Find a log of recent updates from the SAO Data Team below:
Click here to access data updates
Request Data
Access the form below to submit a data request to the SAO Data Team. We are committed to transparency and eager to support meaningful analytical research; please help us help you by supplying as much information below as you can!