Cook County Illinois Public Records
Use map to route Cook County searches across Clerk recordings, Assessor parcels, Treasurer tax, Circuit Court files, and municipal permits, with notes on online indexes and certified-copy requests.
On this page:
Start Here
- Start with a PIN lookup at the Cook County Assessor to confirm parcel identity and basic property data.
- Search recorded documents by grantor/grantee name, PIN, or document number with the Cook County Clerk (Recorder functions).
- Check current and prior-year property tax amounts and payment status by PIN with the Cook County Treasurer.
- Use the Cook County Clerk of the Circuit Court docket search to locate civil, probate, and traffic cases by name or case number.
- Confirm permit history and code compliance with the city or village building department for the parcel's municipality.
Record Routing
- Recorded deeds, mortgages, and liens → County Clerk (Recording)
- Property assessments and PIN assignments → County Assessor
- Property tax bills and payments → County Treasurer
- Civil, probate, and domestic case files → Circuit Court Clerk
- Building permits and inspections → Municipal Building/Planning Department
Common Search Inputs
- Property Index Number (PIN)
- Grantor or Grantee Name
- Property Address
- Document Number or Instrument Number
- Case Number
- Municipality or City
Cook County Source Map
| Source / Office | Best For | Search Method | Why It Matters |
|---|---|---|---|
| Cook County Clerk (Recording) | Deeds, mortgages, liens, releases, assignments | Index search by name, PIN, or document number; images where available; certified copies by request | PIN-based recording supports precise parcel-tied searches across Chicago and suburban municipalities within Cook County. |
| Cook County Assessor | Parcel identification (PIN), assessed values, property characteristics | Address-to-PIN and PIN lookup; owner-name search where available | The PIN is the primary cross-agency key used by Assessor, Treasurer, and recording searches in Cook County. |
| Cook County Treasurer | Property tax bills, payment history, delinquencies | PIN lookup with year filters; bill and payment detail | Verifies tax status affecting transfers, redemptions, and lien risk on Cook County parcels. |
| Clerk of the Circuit Court of Cook County | Civil, probate, domestic relations, and traffic case dockets | Name or case number search; docket details online; certified copies by request | Court matters can involve properties, estates, foreclosures, and judgments intersecting with land and tax records. |
| Municipal Building/Planning Departments (within Cook County) | Building permits, inspections, code enforcement, occupancy | Address search or permit/application number; some cities offer online portals | Permitting and violations are issued by the property’s municipality, not the county; critical for due diligence. |
Cook County FAQs
How do I find a deed or lien for a Cook County property?
Search the County Clerk recording index by grantor/grantee, PIN, or document number; view index details online where available and request certified copies when needed.
What is a PIN and where do I get it for Cook County parcels?
The Property Index Number uniquely identifies a parcel in Cook County; obtain or confirm it from the Assessor using the property address or on the tax bill.
Can I check Cook County property taxes online?
Yes. Use the Treasurer’s PIN lookup to review bill amounts, payment history, and any delinquency; request official statements or receipts as needed.
Are Cook County court case records available online?
Docket information can be searched through the Clerk of the Circuit Court by name or case number; document images may be limited, with certified copies available by request.