Whether providing open data from our County systems or maps and information, Cook County is committed to providing transparency and open government. 

The Census and COVID-19  

  • The last date to complete your census is October 31, 2020. You can now fill out your...
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The Cook County Reopening Plan for Offices Under the President (OUP) outlines OUP’s phased approach to reopening Cook County facilities to...

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Equal Employment Opportunity Office provides oversight of the County's equal employment policies and programs.  It is the role of this office to...

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Home Rule Tax Web (mobile) application

The Home Rule Tax Reward program rewards those individuals who report violations of the Cook...

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Justice Advisory Council Board Members 2019

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Cook Central: Centralizing Maps, Apps, and Data

From property and boundary data, to transportation, social service, and environmental...

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Intergovernmental Agreement

In May 2019, Cook County and the Metropolitan Water Reclamation District of Greater Chicago ("MWRD") entered...

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Information Technology and Support Services

In 2015, the Cook County Office of the Chief Procurement Officer and...

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To View/Interact with the data for any of the sections below, either click on the header or reference the Related Links area on...

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Tell us what you think of the Policy Roadmap Public Dashboard and our new Open Performance Site! We would love to hear what you think. Please send...

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During September 14 – 18, 2020, Cook County will hold its second Racial Equity Week to delve deeper into the need to advance racial...

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An exempt position is one that involves policy making to an extent or is confidential in such a way that political affiliation is an appropriate...

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Video Gaming

Cook County now allows establishments licensed to sell alcohol for on-site consumption to...

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