Cook County Tax-Exempt Property Parcels with Geocodes

Parcels with property tax-exempt status across Cook County, Illinois, starting from Tax Year 2022. The dataset includes geographic coordinates, addresses, and ownership details for parcels owned by religious, charitable, educational, and governmental organizations. It is published and maintained by the Cook County Assessor's Office, with monthly updates.

Use Cases

• Mapping the spatial distribution of tax-exempt properties using the `longitude` and `latitude` columns.
• Analyzing ownership patterns by `owner_name` and `class` to identify major holders of exempt land.
• Tracking changes in exempt status over time by filtering on the `tax_year` column.
• Correlating exempt properties with local jurisdictions using `township_name` and `township_code`.

Strengths

• Includes geographic coordinates (`longitude`, `latitude`) for spatial analysis.
• Covers multiple tax years, starting from 2022, allowing for temporal trend analysis.
• Published by an official government source (Cook County Assessor) and updated monthly.

Limitations

• Key metadata like row count, license, and exact size is unknown or conflicting across sources.
• Newer properties may have missing address data (`property_address`, `property_city`).
• Exempt status and assessed values are subject to change until official certification.

Provenance

Source

Cook County Assessor's Office

Collection Method

Administrative data from property tax assessment and exemption processes.

Time Range

Tax Year 2022 onward

Freshness

2026-04-05

Geography

Cook County, Illinois, USA