A Note from the State's Attorney's Office as of 12/30/2024:

The Cook County State's Attorney's Office believes data transparency is an important accountability and public safety tool and is committed to providing Cook County residents with this critical information. Currently, we are working to make sure that the data we share is valid, accurate, and presented in a format that is useful to the public. Our goal is to have resumed updating the Cook County open data site within the first 100 days of the new administration.

Dataset Description:

The Diversion dataset contains information on defendants who receive a referral to a diversion program, including the type of program and date of referral; each row is a program to which a defendant has been referred.
Please use this link for more instructions and data glossary:
https://www.cookcountystatesattorney.org/resources/how-read-data

This data is compiled by the Cook County Department of Public Health using data from the Illinois Department of Public Health Vital Statistics. It includes the annual number of deaths, crude and age-adjusted death rates by selected causes of death. Further analysis is available by age group, race/ethnicity, gender and decedent's place of residence in suburban Cook County at the time of their death. Note: Counts suppressed for events between 1 and 4, Rates not calculated for events less than 20

Historical budget appropriations from 2016 to present budget

This data contains every residential Property Index Number (PIN) and corresponding Assessed Values from significant stages in the assessment process.

This data was replaced with the more comprehensive Cook County Assessor's Fair Cash Values.

Public Statements issued by the Office of the Independent Inspector General regarding matters associated with the Metropolitan Water Reclamation District of Greater Chicago.

A data set showing algorithmically determined sales comparables for single family properties in Lake Township

2010 U.S. Census Mail Return Rates and Demographics by Tract for Cook County. According to the US Census, tracts that fell below the 73% threshold were designated as containing "hard-to-count" (HTC) populations.
The data supplies two primary groups of information: 1) details on the mail return rates for each census tract in Cook County 2) Estimated demographic characteristics for each census tract in Cook County.
For detailed information on the data please go to the following link:
https://datacatalog.cookcountyil.gov/stories/s/hza3-k7kt