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Data Quality Warning: Appeals for many years are currently missing from this dataset as we repopulate our system of record with updated records. We will update this text when the data has been...
Search relevance: 176.42 | Views last month: 36 | Catalog Last Checked: November 03, 2026 at 11:23 PM -
Assessment Appeals by Town and Class from Tax Year 2010.
Search relevance: 90.92 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:28 PM -
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 assessment performance over time, and...
Search relevance: 38.92 | Views last month: 64 | Catalog Last Checked: November 03, 2026 at 11:23 PM -
A complete, historic universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure to zero-pad them to 14...
Search relevance: 38.01 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:28 PM -
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. This dataset...
Search relevance: 24.33 | Views last month: 10 | Catalog Last Checked: October 20, 2026 at 11:17 PM
