Counties in Illinois

Counties guides and official resources for Illinois State and all cities within Illinois, with Chicago-area specifics where applicable.

Each Illinois county has its own Recorder (or Clerk/Recorder) for land records and a Supervisor of Assessments (Assessor) for property valuations. Use the county pages below to jump to “Key Agencies & Links” for recordation, assessments, zoning, and ROW permitting.

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Counties FAQs

Getting Started

At your County Recorder (or Clerk/Recorder) office. See the Key Agencies & Links for a direct link to recorder resources.

Agencies

County Supervisor of Assessments (or township assessors in some counties). Use the Assessor links to verify parcel data and appeals.

Timelines

Yes. County DOTs/Highways issue their own ROW/access permits on county routes; IDOT covers state routes. Confirm which road authority applies.