The Illinois risk most out-of-state buyers underestimate: Radon + flooding (especially basements)
Basement flooding history (sump pump, French drain, backup), radon level (IL has elevated zones statewide), and the parcel's combined-sewer-overflow risk.
82 Illinois cities
- Chicago, ILpop 2,721,308
- Aurora, ILpop 180,710
- Naperville, ILpop 153,124
- Joliet, ILpop 151,837
- Rockford, ILpop 147,486
- Elgin, ILpop 114,701
- Springfield, ILpop 112,949
- Peoria, ILpop 111,696
- Champaign, ILpop 91,961
- Waukegan, ILpop 88,570
- Cicero, ILpop 82,090
- Bloomington, ILpop 79,232
- Schaumburg, ILpop 77,099
- Evanston, ILpop 76,006
- Arlington Heights, ILpop 75,596
- Bolingbrook, ILpop 74,756
- Decatur, ILpop 68,763
- Palatine, ILpop 65,951
- Skokie, ILpop 65,850
- Des Plaines, ILpop 58,832
- Orland Park, ILpop 58,020
- Oak Lawn, ILpop 56,531
- Mount Prospect, ILpop 55,460
- Berwyn, ILpop 55,152
- Tinley Park, ILpop 54,856
- Wheaton, ILpop 53,741
- Normal, ILpop 53,304
- Oak Park, ILpop 52,947
- Hoffman Estates, ILpop 50,920
- Downers Grove, ILpop 50,552
- Plainfield, ILpop 48,881
- Glenview, ILpop 47,634
- Elmhurst, ILpop 46,108
- Lombard, ILpop 44,490
- Buffalo Grove, ILpop 43,072
- Moline, ILpop 42,442
- Crystal Lake, ILpop 41,513
- Romeoville, ILpop 41,177
- Bartlett, ILpop 40,718
- Belleville, ILpop 40,560
- DeKalb, ILpop 40,491
- Urbana, ILpop 39,831
- Carol Stream, ILpop 39,556
- Quincy, ILpop 38,786
- Oswego, ILpop 38,778
- Park Ridge, ILpop 38,445
- Streamwood, ILpop 38,360
- Wheeling, ILpop 38,329
- Carpentersville, ILpop 37,144
- Hanover Park, ILpop 36,685
- Rock Island, ILpop 36,434
- Addison, ILpop 35,728
- Calumet City, ILpop 34,855
- Northbrook, ILpop 34,546
- Woodridge, ILpop 34,103
- St. Charles, ILpop 33,482
- Glendale Heights, ILpop 32,866
- Mundelein, ILpop 32,641
- O'Fallon, ILpop 32,169
- Elk Grove Village, ILpop 31,802
- Pekin, ILpop 31,266
- Highland Park, ILpop 30,794
- North Chicago, ILpop 30,639
- Gurnee, ILpop 30,546
- Algonquin, ILpop 30,539
- Niles, ILpop 29,918
- Galesburg, ILpop 29,289
- Glen Ellyn, ILpop 28,872
- McHenry, ILpop 28,825
- Lake in the Hills, ILpop 28,706
- Burbank, ILpop 28,606
- Huntley, ILpop 28,495
- New Lenox, ILpop 28,480
- Lansing, ILpop 28,107
- Danville, ILpop 27,981
- Wilmette, ILpop 27,443
- Round Lake Beach, ILpop 27,091
- Vernon Hills, ILpop 27,002
- Lockport, ILpop 26,915
- Granite City, ILpop 26,854
- Oak Forest, ILpop 26,813
- Edwardsville, ILpop 26,715
Have a specific Illinois address in mind?
The city pages are the macro view. For the exact flood zone and assigned school for a particular parcel, run the address through the free /check tool. The paid report adds 25+ more checks.