ProPublica Illinois Datasets

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Commercial and Industrial Property Values in Chicago and Cook County

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Commercial and Industrial Property Values in Chicago and Cook County

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Commercial and industrial property value data for Cook County and Chicago, including tax assessment values, property sales records, and assessment appeals for 2003-2016.

Data Partner

Provided in collaboration with Chicago Tribune

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Source

Illinois Department of Revenue, Cook County Assessor's Office

Dates

2003-2016

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City of Chicago Camera Tickets and Warnings Data

free

City of Chicago Camera Tickets and Warnings Data

free

Information about every red-light and speed camera ticket and warning issued by the City of Chicago from January 1, 2010 to mid-2021.

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Source

Chicago Department of Finance

Dates

Jan. 1, 2010 to June 13, 2021

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City of Chicago Parking and Camera Ticket Data

free

City of Chicago Parking and Camera Ticket Data

free

A detailed dataset of parking, vehicle compliance, and camera tickets issued in Chicago. Includes details on when and where tickets were issued, the violation for which the vehicle was cited, payment status and more.

Data Partner

Provided in collaboration with WBEZ

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Source

Chicago Department of Finance, ProPublica Illinois

Dates

1996-2018 (see description for details)

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LEADS Gang File Summary Data

free

LEADS Gang File Summary Data

free

Counts of individuals added into the LEADS (Law Enforcement Agencies Data System) Gang File by Illinois state and local police in each year since 1993.

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Source

Illinois State Police

Dates

1993 to 2018

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Cook County Regional Gang Intelligence Database

free

Cook County Regional Gang Intelligence Database

free

A snapshot of the gang database maintained by the sheriff’s office and jail in Cook County, Illinois, along with other law enforcement agencies. Personal identifiers have been removed.

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Source

Cook County Sheriff’s Office

Dates

June 2018

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Chicago Police Department Data on Gang Members

free

Chicago Police Department Data on Gang Members

free

This dataset contains descriptive information on individuals that the Chicago Police Department has classified as gang members. 

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Source

Chicago Police Department

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Cook County Commercial and Industrial Property Tax Assessments

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Cook County Commercial and Industrial Property Tax Assessments

free

This download includes three different data sets that were provided to ProPublica Illinois and the Chicago Tribune by the Cook County Assessor's Office.

Data Partner

Provided in collaboration with Chicago Tribune

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Source

Cook County Assessor's Office

Dates

2002-2016

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Northern Illinois Federal Gun Cases

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Northern Illinois Federal Gun Cases

free

Bulk data about federal gun cases in the Illinois Northern District between January 2007 and October 2017.

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Source

Dates

January 2007 - October 2017

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Related collections

Chicago, Illinois, Debt, Municipal Tickets, WBEZ, Gangs, Cook County, Guns, and Crimes