Welcome to CookViewer 3.0!

We hope you enjoy the modernized user experience. The previous version of CookViewer will be available until May 30, 2025.

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CookViewer

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Welcome to CookViewer 3.0 - your ultimate source for Cook County property information! Access detailed property insights with ease, now with a modernized user experience, enhanced features, and expanded language support. Dive into the 'What's New' section to explore the latest updates. We value your feedback, which helps us continue improving to better serve you.

To get started, you can:

Select a location on the map

Click or tap on a specific property to view details

Select Multiple Parcels

Use the 'Select Multiple Parcels' tool to choose multiple parcels by either clicking in the map or drawing a shape around them

Whats New?

CookViewer 3.0.2

Release: February 27 2025

Enhancements

Unincorporated Zoning Layer - The Unincorporated Zoning layer is now viewable for more zoom levels.

Bug Fixes

Missing Translations - Spanish translations are now enabled for the search bar, including search sources and placeholder text.

URL Parameter Fix - Search results now correctly generate pin10 and/or pin14 values in the application URL, allowing users to save search settings and return to their results. Previously, multiple parcel searches could return address=0 when parcel address data was unavailable, preventing users from navigating back to their search results.

Select Multiple Parcels - Draw polygon tool “start new” button now triggers a restart.

Comparable Search - Search radius option will now filter results based on distance set by the user. Prior to this fix, the search distance set by the user was not impacting the number of results.

Read detailed release notes.

Enhancements

District Info - Users can now view a summary of political and taxing district info by clicking the 'View District Details' link in the the property detail panel or by scrolling to the bottom of the panel

Highway System Labels - Users can now view the Highway System layer with labels displayed in the map

Bug Fixes

Mobile Search Bar - The mobile search bar will now load without having to close the Info Panel when the application loads

Read detailed release notes.

Enhancements

Search - New capabilities for condominium property searches, including full PIN 14 search functionality. The search widget is now powered by Cook County's parcel dataset and two new address locators that contain address attributes for parcels and street addresses within Cook County, IL. With these upgrades, it offers smarter suggestions and more flexible address matching, making it easier to find what you're looking for.

Spanish Language Support - Expanded language support for English and Spanish

Mobile Responsive - Improved mobile experience, making property information more accessible and user-friendly on smartphones and tablets.

Historical Imagery - Users can now see the evolution of properties and landscapes using aerial imagery spanning from 1998 to 2023.

Read detailed release notes.

Contact Us

For questions about issues with using CookViewer or other GIS inquiries:

Please email the Cook County GIS Department at gis@cookcountyil.gov

161 North Clark Street, Suite 500
Chicago, Illinois 60601

For questions about Assessment Information:

Please contact the Cook County Assessor's Office

118 North Clark Street, Room #320
Chicago, Illinois 60602
(312) 443-7550

For questions about Parcel maps, Legal Descriptions & Taxing Districts:

Please email the Cook County Clerk’s Office at clerk.maps@cookcountyil.gov

118 North Clark Street, Room #434
Chicago, Illinois 60602
(312) 603-5640

For Plat requests or for other recorded documents:

Please email the Cook County Clerk's Recordings Division at clerk.recordings@cookcountyil.gov

118 North Clark Street, Room #120
Chicago, Illinois 60602
(312) 603-5050