Illinois parcel and infrastructure data by county
Korzy covers all 102 counties in Illinois with about 6 million parcel records. Statewide, 69% of records carry a value, 33% a year built and 35% an owner name; the API also tracks about 100 data-center projects and about 600 power plants with about 53,000 MW of capacity.
Featured Illinois counties
Cook County
About 1.9 million parcel records. Nearly all include a value; 84% a year built.
About 60 data-center projects · about 1,300 MW of generation · about 1,200 mi of rail
DuPage County
About 340,000 parcel records. Nearly all include a value.
About 20 data-center projects · about 1,100 MW of generation · about 170 mi of rail
Lake County
About 320,000 parcel records. Most include a value; 68% a year built.
3 data-center projects · about 730 MW of generation · about 170 mi of rail
Every other Illinois county answers the same address, point and context requests. Featured counties in other states.