Data · dataset · 2023
Assessor - Parcel Addresses
Listed in Open Data Portal for Cook County Government
Situs and mailing addresses of Cook County parcels.
Description
Used by the Assessor's office to mail assessment notices. This dataset was updated in March 2026 to include both owner and taxpayer information.
Please note that owner name and mailing address is, to our knowledge, only intermittently updated in the ias source data. Users can use Parcel Sales data to query owner and seller names. When working with Parcel Index Numbers (PINs) make sure to zero-pad them to 14 digits.
Read the rest (2 more)
Some datasets may lose leading zeros for PINs when downloaded. Additional notes: Newer properties may be missing a mailing or property address, as they need to be assigned one by the postal service. Rowcount for a given year is final once the Assessor has certified the assessment roll all townships.
Data will be updated semi-monthly. For more information on the sourcing of attached data and the preparation of this dataset, see the Assessor's Standard Operating Procedures for Open Data on GitHub. Read about the Assessor's 2025 Open Data Refresh.
Links
Get the data
- CSV datacatalog.cookcountyil.gov/api/views/3723-97qp/rows.csv?accessType=DOWNLOAD ↗
download · from datacatalog cookcountyil gov
Where it is published
- datacatalog.cookcountyil.gov /Property-Taxation/Assessor-Parcel-Addresses/3723-97qp ↗
Open Data Portal for Cook County Government dataset page
landing page · from datacatalog cookcountyil gov
Catalogue records · 1
- SODA API datacatalog.cookcountyil.gov/resource/3723-97qp.json ↗
metadata API · from datacatalog cookcountyil gov
Topics
- Stated by source
- Property & Taxation
- From keywords
- Economics & Finance
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Open Data Portal for Cook County Government | 3723-97qp | 5 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| concepts[field].local:field:economics-finance | mapping · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| concepts[topic].socrata_category:datacatalog_cookcountyil_gov:property-taxation | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| created_date | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| description | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | /resource/description |
| publication_date | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| title | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | /resource/name |
| updated_date | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 |