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County
Assessor [Archived 05-11-2022] - Residential Sales Data
Cook County of Illinois —
This is the data set of residential sales used by the Cook County Assessor in their Computer Assisted Mass Appraisal system used to assess residential property... -
County
Assessor [Archived 05-11-2022] - Experimental Single Family Sales Comparables
Cook County of Illinois —
A data set showing algorithmically determined sales comparables for single family properties in Lake Township -
County
Assessor [Archived 05-11-2022] - Property Locations
Cook County of Illinois —
This data set includes property locations and attached spatial data for all Cook County parcels. Spatial matching was based on parcel centroids. Older properties may... -
County
Police Incident Blotter (Archive)
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Police Blotter Archive contains crime incident data after it has been validated and processed to meet Uniform Crime Reporting (UCR) standards, published on a... -
County
Assessor [Archived 05-11-2022] - Residential Exemption Amounts
Cook County of Illinois —
This data displays total exempt EAV and total exemptions by tax code. Since residential exemptions reveal sensitive information about individual taxpayers and... -
County
Assessor [Archived 05-11-2022] - Residential Neighborhood Boundaries
Cook County of Illinois —
Neighborhoods play an important role in residential property assessment. Single-family and residential multi-family property assessments are sensitive to neighborhood... -
County
Assessor [Archived 05-11-2022] - Residential COVID Adjustment Replication Data
Cook County of Illinois —
In response to the 2020 COVID-19 pandemic and its anticipated effects on the residential real estate market, the Cook County Assessor will adjust residential... -
County
Assessor [Archived 05-18-2022] - Residential Assessments
Cook County of Illinois —
This data contains every residential Property Index Number (PIN) and corresponding Assessed Values from significant stages in the assessment process. This data was... -
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
Assessor [Archived 05-11-2022] - Residential Property Characteristics
Cook County of Illinois —
Assessment dataset used by the Cook County Assessor in their Computer Assisted Mass Appraisal (CAMA) system used to assess residential properties in Northern... -
County
Assessor [Archived 05-11-2022] - Cook County Property Assessments
Cook County of Illinois —
Every assessed value in Cook County 2010 to 2020, and appeal indicators. Each PIN has three stages of assessments each year: CCAO Mailed, CCAO Certified, and Board of... -
County
Assessor [Archived 05-11-2022] - First Pass Values
Cook County of Illinois —
As of February 14, 2020 this dataset will be considered archived information and will no longer be updated. First-pass property values as assessed by the Cook County... -
County
Assessor [Archived 05-11-2022] - Sales
Cook County of Illinois —
Real estate sales data used by the Cook County Assessor to estimate Fair Cash Values for the purpose of property taxation. Deeds that include multiple PIN numbers are...