| # | County | Expected annual loss |
|---|---|---|
| 1 | Cook County | $2.42B |
| 2 | DuPage County | $366.0M |
| 3 | Will County | $348.1M |
| 4 | Lake County | $266.5M |
| 5 | Kane County | $198.1M |
| 6 | St. Clair County | $174.6M |
| 7 | Madison County | $154.9M |
| 8 | McHenry County | $142.5M |
| 9 | Winnebago County | $121.6M |
| 10 | Sangamon County | $114.8M |
| 11 | Champaign County | $93.3M |
| 12 | Peoria County | $84.7M |
| 13 | McLean County | $81.3M |
| 14 | Kendall County | $74.8M |
| 15 | Kankakee County | $68.2M |
| 16 | LaSalle County | $60.5M |
| 17 | Tazewell County | $60.0M |
| 18 | Williamson County | $52.5M |
| 19 | Grundy County | $50.1M |
| 20 | Jackson County | $50.0M |
| 21 | DeKalb County | $47.4M |
| 22 | Macon County | $47.0M |
| 23 | Rock Island County | $45.4M |
| 24 | Macoupin County | $38.7M |
| 25 | Ogle County | $36.1M |
Source: FEMA National Risk Index (December 2025). All counties with data are ranked. Estimates carry margins of error.
Citing this page: GIS Map, “Counties with the Highest Expected Annual Loss from Natural Hazards in Illinois”, https://gismap.land/rankings/illinois/highest-expected-loss-counties. Figures from FEMA National Risk Index (December 2025).
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