JB PARCELCook County, Illinois: parcel data and property records
1,872,370 Cook County parcels on one searchable map: owner of record and mailing address, assessed and appraised values and recorded sales, plus lot boundaries and location. Screen by acreage, year built and owner tenure.
What the data covers
These bars show real field-by-field coverage for Cook County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for Cook County: deeded acreage, vacancy and out-of-state owners. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-07-14.
Areas covered
Parcel counts by place, largest first: Chicago (887,870), Des Plaines (31,404), Arlington Heights (31,125), Schaumburg (29,321), Orland Park (27,966).
Search Cook County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values, recorded sales, year built and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the Cook County map See plans
Common questions
How many parcels are in Cook County, Illinois?
JB PARCEL carries 1,872,370 parcel records for Cook County, Illinois, with owner information on 99 percent of them.
Can I find out who owns a property in Cook County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values, recorded sales, year built and lot lines on the map. Sale records here currently run through 2026-07-14.
How do I find vacant land or absentee owners in Cook County?
We do not hold vacancy data for Cook County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field.
Can I search Cook County by lot size or acreage?
Yes. Acreage is on 75 percent of Cook County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.