Chief County Assessment Office

Duties of the Chief County Assessment Officer include:
  • Holds annual meeting with Township Assessors
  • Serves as chairperson of the Farmland Assessment Review Committee
  • Serves as Clerk of the Board of Review
  • Maintains an up-to-date property record card system, which lists the legal description, owner’s name, and the assessment
  • Maintains the current owners of record by using the deeds filed in the recorder’s office
  • Reviews all assessments made by the Township Assessors and revises them as appear to be just
  • Equalizes assessments by township
  • Publishes the assessment changes for each township
  • Mails notices to each owner of record whose assessment has been changed
  • Applies preferential assessments
  • Administers the Homestead Application process:
    • General Homestead
    • Homestead Improvement
    • Senior Citizen Homestead
    • Senior Citizen Assessment Freeze
    • Disabled Veteran Exemption
    • Disabled Veteran Standard
    • Disabled Person's Homestead
    • Returning Veteran's Homestead

Due to the courthouse renovation project, slated to begin in March 2024, the County’s Supervisor of Assessment Office physical address will change on February 1, 2024 to 219 Kelly Lane, Galena, Illinois 61036.  The mailing address will remain the same.  For questions, please email

Property Assessment Complaint Session Closed.
  The time to file a property assessment complaint has expired.  Please get in touch with your Township Assessor to discuss your 2024 assessment.

Township Assessor contact information can be found here.

Assessment Office Year in Review

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