Parcels in Cook County, Illinois

Cook County, Illinois is home to 5,194,625 residents. Land Owl's parcel layer records the following within the county boundary — Parcel boundaries mapped: 1,430,023. Parcels with an owner record: 98.3%. Parcels with an assessed value: 91.7%. Parcels with a mailing address: 98%. County acres per mapped parcel: 0.4 acres. The figures on this page are derived from the same data the map renders, so they always agree. A free Land Owl account adds ownership records, flood zones, soils, wetlands and topography over the same view.

Frequently asked questions

How many parcels are there in Cook County, Illinois?

Land Owl maps 1,430,023 parcel boundaries in Cook County, Illinois, an average of 0.4 acres of county land per parcel. Parcel counts move as land is split and merged, so the county assessor's own figure is the one of record.

Is this parcel map free to use?

Yes. This map is free to view. A free Land Owl account unlocks the other data layers, parcel boundaries and ownership records.

Where does this data come from?

Land Owl compiles parcel boundaries and assessment records from county assessor and GIS offices and matches them into one national layer. Counties publish on their own schedules, so a recent split, merger or sale may not have reached the public record yet. The county's own records are authoritative.

Is the owner's name shown on this map?

Not on this page. Ownership records, mailing addresses and assessed values are in the Land Owl app behind a free account.