ParcelioCook 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 absentee ownership, 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: vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-10-30.
Areas covered
Parcel counts by place, largest first: Chicago (887,871), Des Plaines (31,404), Arlington Heights (31,125), Schaumburg (29,321), Orland Park (27,966).
Recent sales
63,342 Cook County parcels have a recorded sale dated since November 2025. Across 44,233 priced sales, with a deed recorded on several parcels counted once, the median price was $372,500 and the middle half sold between $227,000 and $625,000.
Land use mix
The most common land use or property class on file, as the county writes it, by share of parcels with one: Residential 85%, Exempt Property 5%, Commercial/Industrial 5%, Vacant 3%, Multi-Family 1%.
Nearest counties
- DuPage County: about 10 mi away, 337,341 parcels
- Will County: about 24 mi away, 278,546 parcels
- Kane County: about 28 mi away, 189,259 parcels
- Kendall County: about 31 mi away, 59,664 parcels
- Lake County: about 36 mi away, 278,978 parcels
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?
Parcelio 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 2026-10-30.
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. Cook County does have owner mailing state: 49,114 parcels have an owner mailing address outside Illinois.
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.