Natural Hazard Risk in Illinois
The risk score (0–100) combines expected annual loss from 18 natural hazards with social vulnerability and community resilience. Higher = greater relative risk. Scores compare counties across the United States.
See what's happening right now on the live map →| County | Risk score | Rating | Expected annual loss | Population |
|---|---|---|---|---|
| Cook | 100 | Very High | $2.4B | 5,272,775 |
| DuPage | 97.6 | Relatively High | $366M | 932,368 |
| Will | 97.3 | Relatively High | $348.1M | 696,135 |
| Lake | 96 | Relatively High | $266.5M | 713,483 |
| St. Clair | 94.9 | Relatively High | $174.6M | 257,200 |
| Kane | 94.6 | Relatively High | $198.1M | 516,173 |
| Madison | 93.4 | Relatively Moderate | $154.9M | 265,727 |
| Winnebago | 92.4 | Relatively Moderate | $121.6M | 285,162 |
| Sangamon | 91.7 | Relatively Moderate | $114.8M | 196,182 |
| McHenry | 90.8 | Relatively Moderate | $142.5M | 310,151 |
| Peoria | 90.7 | Relatively Moderate | $84.7M | 181,691 |
| Champaign | 90.5 | Relatively Moderate | $93.3M | 205,823 |
| Kankakee | 88.2 | Relatively Moderate | $68.2M | 107,359 |
| Jackson | 87.1 | Relatively Moderate | $50M | 52,912 |
| McLean | 86.9 | Relatively Moderate | $81.3M | 170,926 |
| LaSalle | 86.1 | Relatively Moderate | $60.5M | 109,558 |
| Williamson | 85.8 | Relatively Moderate | $52.5M | 67,101 |
| Tazewell | 84.2 | Relatively Moderate | $60M | 131,288 |
| Rock Island | 84.1 | Relatively Moderate | $45.4M | 144,591 |
| Macon | 83.3 | Relatively Moderate | $47M | 103,930 |
| Franklin | 80.9 | Relatively Low | $31.9M | 37,777 |
| DeKalb | 80.8 | Relatively Low | $47.4M | 100,385 |
| Kendall | 80.2 | Relatively Low | $74.8M | 131,852 |
| Macoupin | 79.9 | Relatively Low | $38.7M | 44,940 |
| Vermilion | 78.8 | Relatively Low | $32.3M | 74,163 |
| Randolph | 78.6 | Relatively Low | $35.4M | 30,151 |
| Jefferson | 77.2 | Relatively Low | $34.1M | 37,082 |
| Marion | 77.1 | Relatively Low | $30.9M | 37,690 |
| Iroquois | 74 | Relatively Low | $33.9M | 27,072 |
| Stephenson | 73.9 | Relatively Low | $28.9M | 44,602 |
| Perry | 72.1 | Relatively Low | $26M | 20,924 |
| Livingston | 71.8 | Relatively Low | $32.8M | 35,797 |
| Morgan | 71.1 | Relatively Low | $28.5M | 32,911 |
| Ogle | 71.1 | Relatively Low | $36.1M | 51,743 |
| Coles | 70.4 | Relatively Low | $30.8M | 46,818 |
| Saline | 70.1 | Relatively Low | $20.4M | 23,693 |
| Grundy | 66.5 | Relatively Low | $50.1M | 52,475 |
| Whiteside | 65.8 | Relatively Low | $24.6M | 55,637 |
| Clinton | 65.6 | Relatively Low | $27.6M | 36,801 |
| Montgomery | 65.4 | Relatively Low | $22.2M | 28,277 |
| Adams | 64.2 | Relatively Low | $25.9M | 65,679 |
| Bureau | 62.3 | Relatively Low | $22.4M | 33,213 |
| Douglas | 62.1 | Relatively Low | $19.7M | 19,718 |
| Massac | 61.6 | Relatively Low | $18.5M | 14,128 |
| Fulton | 59 | Relatively Low | $21.2M | 33,569 |
| Logan | 58.1 | Relatively Low | $20.3M | 27,961 |
| Boone | 57.3 | Relatively Low | $21.4M | 53,397 |
| Knox | 57.2 | Relatively Low | $18M | 49,886 |
| Henry | 57.1 | Relatively Low | $24.4M | 49,270 |
| Union | 55.4 | Relatively Low | $14.8M | 17,217 |
| Washington | 55.2 | Relatively Low | $18.4M | 13,755 |
| Lee | 54.4 | Relatively Low | $20.6M | 34,125 |
| White | 54.3 | Relatively Low | $14.9M | 13,871 |
| Christian | 54 | Relatively Low | $21.9M | 33,996 |
| Effingham | 53.8 | Relatively Low | $20.4M | 34,654 |
| Shelby | 51.7 | Relatively Low | $19.8M | 20,974 |
| Jo Daviess | 51.3 | Relatively Low | $15.6M | 22,021 |
| Johnson | 51.1 | Relatively Low | $11.9M | 13,301 |
| Lawrence | 49.2 | Relatively Low | $13.7M | 15,271 |
| Pulaski | 49 | Relatively Low | $10.8M | 5,180 |
| Fayette | 48.8 | Relatively Low | $15.1M | 21,487 |
| Richland | 46.7 | Relatively Low | $12.3M | 15,809 |
| Moultrie | 45 | Relatively Low | $10.4M | 14,522 |
| Alexander | 44.1 | Relatively Low | $9.5M | 5,231 |
| Mason | 43 | Relatively Low | $12.3M | 13,071 |
| Monroe | 41.9 | Very Low | $22.6M | 34,896 |
| Clay | 41.1 | Very Low | $11.9M | 13,270 |
| Wayne | 40.7 | Very Low | $13.4M | 16,161 |
| Woodford | 39.9 | Very Low | $21.9M | 38,455 |
| Carroll | 39 | Very Low | $10.8M | 15,692 |
| Cass | 38.6 | Very Low | $12.2M | 13,037 |
| McDonough | 37.5 | Very Low | $10.1M | 27,238 |
| Crawford | 37 | Very Low | $14.2M | 18,678 |
| Bond | 36.2 | Very Low | $11.2M | 16,725 |
| Piatt | 35 | Very Low | $12.6M | 16,660 |
| Edgar | 34.9 | Very Low | $11.7M | 16,856 |
| Gallatin | 33.9 | Very Low | $6.9M | 4,943 |
| Hancock | 31.1 | Very Low | $8.4M | 17,592 |
| Hamilton | 30.8 | Very Low | $12.5M | 7,953 |
| Pike | 30.3 | Very Low | $9.6M | 14,724 |
| De Witt | 29.3 | Very Low | $9.5M | 15,516 |
| Menard | 28.7 | Very Low | $8.1M | 12,284 |
| Clark | 27.3 | Very Low | $8.8M | 15,435 |
| Marshall | 27.2 | Very Low | $8.7M | 11,735 |
| Ford | 26.2 | Very Low | $8.8M | 13,516 |
| Edwards | 26.1 | Very Low | $6.2M | 6,245 |
| Cumberland | 25.9 | Very Low | $7.4M | 10,425 |
| Wabash | 24.8 | Very Low | $7.6M | 11,347 |
| Jasper | 20.4 | Very Low | $10M | 9,278 |
| Jersey | 18.9 | Very Low | $10.8M | 21,501 |
| Henderson | 17.5 | Very Low | $4.9M | 6,382 |
| Warren | 15.5 | Very Low | $7M | 16,835 |
| Pope | 14.9 | Very Low | $5.4M | 3,760 |
| Greene | 13 | Very Low | $6.1M | 11,985 |
| Schuyler | 11.4 | Very Low | $4.1M | 6,902 |
| Putnam | 9.2 | Very Low | $4.7M | 5,637 |
| Mercer | 8.8 | Very Low | $6.9M | 15,683 |
| Hardin | 8.3 | Very Low | $3.6M | 3,643 |
| Stark | 7.3 | Very Low | $4.6M | 5,400 |
| Calhoun | 6.1 | Very Low | $4.1M | 4,437 |
| Brown | 4.7 | Very Low | $3.2M | 6,230 |
| Scott | 2.8 | Very Low | $3.7M | 4,937 |
🏛️ Federal disaster declarations (last 2 years)
DRSEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODNGSep 20, 2024
Flood · Designated areas: Cook (County), Fulton (County), Henry (County), St. Clair (County), Washington (County), Will (County), Winnebago (County)
Major disaster (DR) and emergency (EM) declarations unlock federal assistance for the designated areas. Source: FEMA / OpenFEMA.
Other states
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Data: FEMA National Risk Index (updated ~annually). AlertAtlas is not an official warning service — always follow local authorities.