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Illinois property records and tax lookups

Who holds it: Cook and St. Clair: county assessor; 17 commission counties: supervisor of assessments; other 83 counties: township or multi-township assessors, supervised by the chief county assessment officer1

Last checked against official sources on .

On this page
  1. Looking up a property and appealing a value
  2. More details
  3. Related records in Illinois
  4. How Illinois handles it
  5. Property records in Illinois counties with a full guide
  6. Official warnings
  7. Official copies vs look-alike sites
  8. Sources

Looking up a property and appealing a value

Appealing a value
File a complaint with the county board of review; then appeal to the state Property Tax Appeal Board within 30 days of the board of review's written decision (or tax objection in circuit court)1
State appeal body
Illinois Property Tax Appeal Board (PTAB), ptab.illinois.gov2

More details

County clerk role
County clerk extends taxes (computes rates and apportions levies) and prepares the collector's books1
State role
Illinois Department of Revenue does not administer property tax; it is local3
Deeds: who holds it
County Recorder of Deeds or the County Clerk (recorder functions) in each of Illinois's 102 counties; in Cook County, the Cook County Clerk's Recordings Division4
Deeds: how to search
Search the county recorder/clerk index by PIN, grantor, grantee (online where the county offers it) or in person at the county office5
Maps: state GIS portal
Illinois Geospatial Data Clearinghouse (Illinois State Geological Survey): clearinghouse.isgs.illinois.edu6
Liens: liens at the county
State/federal tax liens, mechanic's liens and UCC fixture-related filings recorded with the county recorder/clerk (Cook example: tax liens $38, mechanic's lien $64)7

How Illinois handles it

  • Township assessors. In 83 township counties, property is assessed by elected township or multi-township assessors (900+ positions), not by a county office.1

Property records in Illinois counties with a full guide

The local office, its official online search and its own fee, for each county with a full guide. Local fees can differ from the statewide figures above.

CountyOfficeSearch onlineFee
Champaign CountyChampaign County Assessment Office9Property search8Treasurer fees: Tax certification $5.00; copy of paid tax statement/duplicate receipt $2.00 per PIN10
Cook CountyCook County Assessor's Office12Property search11—
DeKalb CountyChief County Assessment Office14Property search13—
DuPage CountyDuPage County Supervisor of Assessments16Property search15—
Kane CountyKane County Supervisor of Assessments with elected Township Assessors18Property search17—
Kankakee CountySupervisor of Assessments Office19——
Kendall CountyKendall County Supervisor of Assessments21Property search20Assessor copy fee: $0.35 per page (legal size and smaller); $1.00 per page (11x17 and larger), per 35 ILCS 200/14-3022
Lake CountyChief County Assessment Office24Property search23—
LaSalle CountyLaSalle County Assessments, with township assessors26Property search25—
Macon CountySupervisor of Assessments27Property search27—
Madison CountyChief County Assessment Office28Property search28—
McHenry CountyMcHenry County Office of Assessments30Property search29—
McLean CountySupervisor of Assessments32Property search31—
Peoria CountyPeoria County Supervisor of Assessments34Property search33—
Rock Island CountyRock Island County Assessment Office36Property search35—
Sangamon CountySupervisor of Assessments38Property search37—
St. Clair CountyAssessor40Property search39—
Tazewell CountySupervisor of Assessments41Property search41—
Will CountyWill County Supervisor of Assessments43Property search42—
Winnebago CountySupervisor of Assessments44——

For any other county, see the county list on the Illinois guide.

Official warnings

  • Home title theft / deed fraud; avoid paid 'title lock' services. AG warns of deed fraud and says paid title-lock monitoring duplicates free county property fraud alerts (Illinois Attorney General)4
  • Cook County free Property Fraud Alert. Free alert when a document is recorded against your property (Cook County Clerk)45

Official copies vs look-alike sites

A certified copy comes only from the office that holds the record; reports and "research copies" sold by commercial sites are not issued by any Illinois office. How to tell an official record source from a paid look-alike.

Rules in other states: property and tax records in every state. Everything else in Illinois: Illinois public records guide.

Sources

Every fact above links to the official page it comes from. Fees and rules change, so check the office's own page before you pay or travel.

  1. PTAX-1004 The Illinois Property Tax System: A general guide to the local property tax cycleIllinois Department of Revenuechecked November 4, 2026
  2. Property Tax Appeal Board homeIllinois Property Tax Appeal Boardchecked November 4, 2026
  3. Property Tax (local governments)Illinois Department of Revenuechecked November 4, 2026
  4. Beware of the Home Title Theft Scam (fact sheet)Office of the Illinois Attorney Generalchecked November 4, 2026
  5. Search RecordingsCook County Clerk's Officechecked November 4, 2026
  6. About - Illinois Geospatial Data ClearinghouseIllinois State Geological Surveychecked November 4, 2026
  7. Recording FeesCook County Clerk's Officechecked November 4, 2026
  8. Champaign County Illinois (home)Champaign County, Illinoischecked November 4, 2026
  9. Champaign County Assessment OfficeChampaign County, Illinoischecked November 4, 2026
  10. Treasurer 2026 fee scheduleChampaign County, Illinoischecked November 4, 2026
  11. Cook County Property Tax PortalCook County (joint property tax portal)checked November 4, 2026
  12. Assessor (agency page)Cook County Governmentchecked November 4, 2026
  13. Property Data and MapsCounty of DeKalb, ILchecked November 4, 2026
  14. Assessment OfficeCounty of DeKalb, ILchecked November 4, 2026
  15. Supervisor of AssessmentsDuPage County Supervisor of Assessmentschecked November 4, 2026
  16. DuPage County home pageDuPage Countychecked November 4, 2026
  17. Kane County Supervisor of Assessmentschecked November 4, 2026
  18. Kane Countychecked November 4, 2026
  19. Site MapKankakee County, ILchecked November 7, 2026
  20. Kendall County, IL (home page)Kendall County, Illinoischecked November 4, 2026
  21. Property Tax Number Information - County Contact InformationIllinois Department of Revenuechecked November 4, 2026
  22. Assessments Fees | Kendall County, ILKendall County, Illinoischecked November 4, 2026
  23. Lake County Chief County Assessment Officechecked November 4, 2026
  24. Lake County Board of Reviewchecked November 4, 2026
  25. Departments | LaSalle County, ILLaSalle Countychecked November 4, 2026
  26. Assessments | LaSalle County, ILLaSalle County Supervisor of Assessmentschecked November 4, 2026
  27. Supervisor of Assessments - Macon County, IllinoisMacon County, Illinoischecked November 8, 2026
  28. Chief County Assessment OfficeMadison County CCAOchecked November 4, 2026
  29. AssessmentsMcHenry County, Illinoischecked November 4, 2026
  30. HomeMcHenry County, Illinoischecked November 4, 2026
  31. Certified Copies of Vital RecordsMcLean County Clerkchecked November 4, 2026
  32. DepartmentsMcLean County, ILchecked November 4, 2026
  33. Peoria County Property Tax InquiryPeoria Countychecked November 4, 2026
  34. Site MapPeoria Countychecked November 4, 2026
  35. Assessment SearchRock Island Countychecked November 4, 2026
  36. Assessment OfficeRock Island Countychecked November 4, 2026
  37. Sangamon County Treasurer | Springfield, Illinoissangamonil.govchecked November 4, 2026
  38. Supervisor of Assessments | Sangamon County, Illinoissangamonil.govchecked November 4, 2026
  39. Il-sc-treasSt. Clair County, Illinoischecked November 4, 2026
  40. AssessorSt. Clair County, ILchecked November 4, 2026
  41. Assessments (Supervisor of Assessments)Tazewell County, Illinoischecked November 4, 2026
  42. Property Search PortalWill County Supervisor of Assessmentschecked November 4, 2026
  43. Property Tax Number Information - County Contact InformationIllinois Department of Revenuechecked November 4, 2026
  44. Supervisor of AssessmentsWinnebago County, Illinoischecked November 4, 2026
  45. Property Fraud UnitCook County Clerk's Officechecked November 4, 2026