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Employee Payroll
Employee payroll data for all Cook County employees excluding Forest Preserves, indicating amount of base salary paid to an employee during the County fiscal quarter. Salaries... -
Public Health: Causes of Death
This dataset is sourced from the Illinois Department of Public Health and curated by the Cook County Department of Public Health. It covers a select set of causes of death... -
Assessor - Appeals
Appeals for many years are currently missing from this dataset as we repopulate our system of record with updated records. We expect all missing appeals to be available again... -
Public Health Birth Data: Pregnancy Health and Risk Factors
This dataset is part of a series of seven datasets about Cook County births sourced from the Illinois Department of Public Health and curated by the Cook County Department of... -
Procurement - Buying Plan - Fiscal Year 2026
This dataset indicates the services that the County expects to procure in 2026, allowing vendors to prepare for upcoming solicitations. The Office of the Chief Procurement... -
Medical Examiner - Unclaimed Persons
This dataset contains our most up to date list of Unclaimed Persons found in Cook County. If you feel you are the next of kin to any of the individuals listed, Please contact... -
Assessor - Commercial Valuation Data
Commercial valuation data collected and maintained by the Cook County Assessor's Office, from 2021 to present. The office uses this data primarily for valuation and reporting.... -
Assessor - Parcel Universe (Current Year Only)
A current-year-only universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure to zero-pad... -
Assessor - Parcel Sales
Update 10/31/2023: Sales are no longer filtered out of this data set based on deed type, sale price, or recency of sale for a given PIN with the same price. If users wish to... -
Procurement - Awarded Contracts & Amendments
Click on the link to see or download a PDF of the contract. This dataset contains new contracts and amendments. Amendments may be contract extensions, renewals, increases,... -
Board of Review Appeal Decision History
Historic land, building, and total assessed values for all Cook County parcels appealed with the Board of Review, from 2010 to present. The Board of Review uses these values for... -
Treasurer - Scavenger Tax Sale
The biennial Scavenger Sale (conducted in odd-numbered years) offers taxes on properties that have delinquencies on three or more years that were not purchased at an Annual Tax... -
Medical Examiner - Unidentified Persons
This dataset contains descriptions of unidentified remains whose cases have been processed by the Medical Examiner’s Office. Call 312-666-0500 to speak to Deputy Chief... -
Human Resources - Collective Bargaining Agreements
This dataset comprises of Collective Bargaining Agreements negotiated by bargaining units and ratified by the Cook County Board of Commissioners. -
Comptroller - Annual Comprehensive Financial Report (ACFR)
The County has prepared the ACFR in accordance with Generally Accepted Accounting Principles (GAAP). GAAP require that management provide a narrative introduction, overview and... -
Medical Examiner Case Archive
Effective April 1, 2022, the Cook County Medical Examiner’s Office no longer takes jurisdiction over hospital, nursing home or hospice COVID-19 deaths unless there is another... -
Public Health Birth Data: Sociodemographic Characteristics of Mother
This dataset is part of a series of seven datasets about Cook County births sourced from the Illinois Department of Public Health and curated by the Cook County Department of... -
Assessor - Parcel Addresses
Situs and mailing addresses of Cook County parcels. Used by the Assessor's office to mail assessment notices. As of 2017 mailing addresses in this dataset are no longer being... -
Cook County Address Points
This dataset contains address points for addresses in Cook County. An ESRI Service is available at: https://hub-... -
Sentencing
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...
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