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County
Assessor - Parcel Sales
Cook County of Illinois —
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... -
County
Assessor - Commercial Valuation Data
Cook County of Illinois —
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... -
County
Assessor - Assessed Values
Cook County of Illinois —
Land, building, and total assessed values for all Cook County parcels, from 1999 to present. The Assessor's Office uses these values for reporting, evaluating... -
County
Assessor - Parcel Universe (Current Year Only)
Cook County of Illinois —
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... -
County
Assessor - Neighborhood Boundaries
Cook County of Illinois —
Neighborhood polygons used by the Cook County Assessor's Office for valuation and reporting. These neighborhoods are specific to the Assessor. They are intended to... -
County
Assessor - Single and Multi-Family Improvement Characteristics
Cook County of Illinois —
Single and multi-family (less than 7 units) property characteristics collected and maintained by the Assessor's Office for all of Cook County, from 1999 to present.... -
County
Cook County Address Points
Cook County of Illinois —
This dataset contains address points for addresses in Cook County. An ESRI Service is available at: https://hub-... -
County
Treasurer - Annual Tax Sale
Cook County of Illinois —
Under Illinois law, the Treasurer’s Office is required to hold an Annual Tax Sale. The sale is held once a year, sometime after the Second Installment. If property... -
County
Assessor - Parcel Universe
Cook County of Illinois —
A complete, historic universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure... -
County
Board of Review Appeal Decision History
Cook County of Illinois —
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... -
County
Assessor [Archived 05-31-2023] - Parcel Universe
Cook County of Illinois —
A complete, historic universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure... -
County
Treasurer - Scavenger Tax Sale
Cook County of Illinois —
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... -
County
Cook County Clerk - Polling Place Locations - 2014 November 4 Gubernatorial Election
Cook County of Illinois —
Data Updated 10/27/2014. This dataset contains the Polling Place locations in suburban Cook County for the 2014 Gubernatorial Election on November 4. For more... -
County
Assessor - Residential Condominium Unit Characteristics
Cook County of Illinois —
Residential condominium unit characteristics collected and maintained by the Assessor's office for all of Cook County, from 1999 to present. The office uses this data... -
County
Assessor - Property Tax-Exempt Parcels
Cook County of Illinois —
Parcels with property tax-exempt status across all of Cook County per tax year, from Tax Year 2022 on, with geographic coordinates and addresses. As of 2017 owner... -
County
Assessor - Appeals
Cook County of Illinois —
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... -
County
Cook County Clerk - Tax Agency Rates
Cook County of Illinois —
Tax Agency rates for Tax Years 2006 through 2013. Data is updated yearly. For more information on Tax agencies visit the Cook County Clerk's website at:... -
County
Cook County Clerk - Lobbyist Activity
Cook County of Illinois —
This dataset is updated nightly. For extended information about Lobbyist Activities in Cook County IL, visit the Cook County Clerk's Lobbyist search:... -
County
Assessor [Archived 05-11-2022] - Residential Modeling Characteristics (Chicago)
Cook County of Illinois —
This data set contains characteristic data points used by the Cook County Assessor in the 2021 Chicago reassessment to produce initial estimates of the current market... -
County
Cook County Clerk - Tax codes, agencies, and rates
Cook County of Illinois —
This dataset shows what agencies are in a tax code for each tax year along with the agency and tax code rates. Data is updated yearly. For more information on Tax...