Illinois

Explore property records and parcel data across 102 counties in Illinois. Search by owner name, address, or parcel ID.

Explore Illinois on the Map
12,692,653
Total Population
79 of 102
Counties with parcel data
7,267,388
Parcels mapped
41%
With owner of record

Largest Counties

CountyPopulationMedian IncomeParcels
Cook County5,185,812$81,7973,751,689
Dupage County927,263$110,502337,350
Lake County711,885$108,917278,586
Will County698,450$107,799280,856
Kane County516,097$100,678188,342
Mchenry County311,366$102,836149,978
Winnebago County283,289$64,363127,844
Madison County264,631$74,800136,634
St Clair County254,777$70,178148,887
Champaign County206,098$63,09180,270

All 102 Counties

Cities, towns & ZIP codes in Illinois →How to look up property records in Illinois →Largest landowners in Illinois →

Nearby States

About Illinois Property Records

CLILU provides free access to parcel maps and property records across all 102 counties in Illinois. Our data is sourced directly from county assessor offices and government GIS portals, ensuring accurate and up-to-date property information.

Use our interactive map to search for properties by owner name, address, or parcel ID. View parcel boundaries, ownership details, and county-level economic data including population, household income, and unemployment rates.