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Assessor - Parcel Addresses
Situs and mailing addresses of Cook County parcels. Used by the Assessor's office to mail assessment notices.
<i><b>As of 2017 mailing addresses in this dataset are no longer being regularly updated. We are trying to figure out a solution to this problem.</b></i>
When working with Parcel Index Numbers (PINs) make sure to zero-pad them to 14 digits. Some datasets may lose leading zeros for PINs when downloaded.
Additional notes:
<ul><li>Mailing addresses can be out of date or fail to properly reflect deed transfers.</li>
<li>Newer properties may be missing a mailing or property address, as they need to be assigned one by the postal service.</li>
<li>This dataset contains data for the current tax year, which may not yet be complete or final. Assessed values for any given year are subject to change until <a href="https://www.cookcountyassessor.com/assessment-calendar-and-deadlines">review and certification of values by the Cook County Board of Review</a>, though there are a few rare circumstances where values may change for the current or past years after that.</li>
<li>Rowcount for a given year is final once the Assessor <a href="https://www.cookcountyassessor.com/assessment-calendar-and-deadlines">has certified the assessment roll</a> all townships.</li>
<li>Data will be updated monthly.</li></ul>For more information on the sourcing of attached data and the preparation of this dataset, see the <a href="https://github.com/ccao-data/wiki/blob/master/SOPs/Open-Data.md">Assessor's Standard Operating Procedures for Open Data</a> on GitHub.
<a href="https://datacatalog.cookcountyil.gov/stories/s/gzdr-q7c4">Read about the Assessor's 2025 Open Data Refresh.</a>
Complete Metadata
| identifier | https://datacatalog.cookcountyil.gov/api/views/3723-97qp |
|---|---|
| issued | 2025-02-19 |
| landingPage | https://datacatalog.cookcountyil.gov/d/3723-97qp |
| theme |
[ "Property & Taxation" ] |