Updated April 2026
Flood Risk in Illinois
Illinois has 103 counties with flood risk data, 257 total NFIP flood insurance claims, and an average risk score of 10 out of 100.
103
Counties
257
NFIP Claims
$5,016,910
Total Payouts
10
Avg Risk Score
Grade Distribution
A
103
counties
B
0
counties
C
0
counties
D
0
counties
F
0
counties
All 103 Counties in Illinois
Sorted by flood risk score, highest to lowest.
| # | County | Grade | Score | Claims | Payouts | Disasters |
|---|---|---|---|---|---|---|
| 1 | St. Clair | A | 20 | 18 | $239,295 | 9 |
| 2 | Calhoun | A | 14 | 6 | $201,665 | 12 |
| 3 | Adams | A | 13 | 0 | $0 | 10 |
| 4 | Jersey | A | 13 | 12 | $360,588 | 10 |
| 5 | Pike | A | 13 | 2 | $4,600 | 11 |
| 6 | Rock Island | A | 13 | 11 | $68,632 | 10 |
| 7 | Will | A | 13 | 7 | $63,302 | 5 |
| 8 | Carroll | A | 12 | 0 | $0 | 8 |
| 9 | Cass | A | 12 | 0 | $0 | 8 |
| 10 | Fulton | A | 12 | 0 | $0 | 9 |
| 11 | Hancock | A | 12 | 0 | $0 | 9 |
| 12 | Henderson | A | 12 | 3 | $54,527 | 9 |
| 13 | Mercer | A | 12 | 1 | $3,737 | 8 |
| 14 | Monroe | A | 12 | 0 | $0 | 9 |
| 15 | Whiteside | A | 12 | 2 | $21,994 | 8 |
| 16 | Alexander | A | 11 | 4 | $24,792 | 7 |
| 17 | Bureau | A | 11 | 0 | $0 | 7 |
| 18 | Greene | A | 11 | 0 | $0 | 7 |
| 19 | Henry | A | 11 | 1 | $60,000 | 7 |
| 20 | Jackson | A | 11 | 0 | $0 | 6 |
| 21 | Morgan | A | 11 | 0 | $0 | 7 |
| 22 | Randolph | A | 11 | 1 | $0 | 7 |
| 23 | Schuyler | A | 11 | 0 | $0 | 7 |
| 24 | Scott | A | 11 | 0 | $0 | 6 |
| 25 | Union | A | 11 | 1 | $0 | 6 |
| 26 | Winnebago | A | 11 | 10 | $358,487 | 6 |
| 27 | Brown | A | 11 | 0 | $0 | 6 |
| 28 | Lake | A | 11 | 25 | $1,149,851 | 5 |
| 29 | La Salle | A | 11 | 0 | $0 | 7 |
| 30 | McHenry | A | 11 | 8 | $89,532 | 6 |
| 31 | Mason | A | 11 | 2 | $0 | 7 |
| 32 | Peoria | A | 11 | 5 | $40,366 | 6 |
| 33 | Tazewell | A | 11 | 0 | $0 | 6 |
| 34 | Jo Daviess | A | 11 | 0 | $0 | 7 |
| 35 | Knox | A | 10 | 0 | $0 | 5 |
| 36 | Lee | A | 10 | 0 | $0 | 5 |
| 37 | Stephenson | A | 10 | 1 | $10,196 | 5 |
| 38 | Ogle | A | 10 | 4 | $36,811 | 5 |
| 39 | DeKalb | A | 10 | 0 | $0 | 4 |
| 40 | Clark | A | 10 | 0 | $0 | 4 |
| 41 | Grundy | A | 10 | 4 | $186,823 | 5 |
| 42 | Kendall | A | 10 | 0 | $0 | 4 |
| 43 | Marshall | A | 10 | 1 | $8,486 | 5 |
| 44 | Woodford | A | 10 | 0 | $0 | 5 |
| 45 | Pulaski | A | 10 | 0 | $0 | 5 |
| 46 | Lawrence | A | 9 | 0 | $0 | 2 |
| 47 | Shelby | A | 9 | 0 | $0 | 2 |
| 48 | Cook | A | 9 | 58 | $1,068,884 | 9 |
| 49 | Douglas | A | 9 | 0 | $0 | 2 |
| 50 | Crawford | A | 9 | 0 | $0 | 3 |
| 51 | Livingston | A | 9 | 1 | $2,519 | 3 |
| 52 | McDonough | A | 9 | 0 | $0 | 2 |
| 53 | Putnam | A | 9 | 0 | $0 | 3 |
| 54 | Stark | A | 9 | 0 | $0 | 2 |
| 55 | Warren | A | 9 | 0 | $0 | 3 |
| 56 | Boone | A | 9 | 1 | $0 | 3 |
| 57 | Clinton | A | 9 | 1 | $9,462 | 3 |
| 58 | Coles | A | 9 | 0 | $0 | 2 |
| 59 | Cumberland | A | 9 | 0 | $0 | 2 |
| 60 | De Witt | A | 9 | 0 | $0 | 2 |
| 61 | Edgar | A | 9 | 0 | $0 | 2 |
| 62 | Franklin | A | 9 | 1 | $62,292 | 2 |
| 63 | Gallatin | A | 9 | 0 | $0 | 2 |
| 64 | Johnson | A | 9 | 0 | $0 | 2 |
| 65 | Kankakee | A | 9 | 8 | $108,204 | 2 |
| 66 | Logan | A | 9 | 1 | $0 | 3 |
| 67 | McLean | A | 9 | 0 | $0 | 2 |
| 68 | Macon | A | 9 | 1 | $11,330 | 3 |
| 69 | Massac | A | 9 | 0 | $0 | 3 |
| 70 | Menard | A | 9 | 0 | $0 | 2 |
| 71 | Pope | A | 9 | 0 | $0 | 3 |
| 72 | Sangamon | A | 9 | 1 | $0 | 2 |
| 73 | Washington | A | 9 | 0 | $0 | 2 |
| 74 | Statewide | A | 9 | 0 | $0 | 2 |
| 75 | DuPage | A | 8 | 11 | $105,550 | 5 |
| 76 | Bond | A | 8 | 0 | $0 | 1 |
| 77 | Champaign | A | 8 | 0 | $0 | 1 |
| 78 | Christian | A | 8 | 0 | $0 | 1 |
| 79 | Clay | A | 8 | 0 | $0 | 1 |
| 80 | Edwards | A | 8 | 0 | $0 | 1 |
| 81 | Effingham | A | 8 | 0 | $0 | 1 |
| 82 | Fayette | A | 8 | 0 | $0 | 1 |
| 83 | Ford | A | 8 | 0 | $0 | 1 |
| 84 | Hamilton | A | 8 | 0 | $0 | 1 |
| 85 | Hardin | A | 8 | 0 | $0 | 1 |
| 86 | Iroquois | A | 8 | 18 | $417,809 | 1 |
| 87 | Jasper | A | 8 | 0 | $0 | 1 |
| 88 | Jefferson | A | 8 | 0 | $0 | 1 |
| 89 | Macoupin | A | 8 | 0 | $0 | 1 |
| 90 | Marion | A | 8 | 0 | $0 | 1 |
| 91 | Montgomery | A | 8 | 1 | $8,082 | 1 |
| 92 | Moultrie | A | 8 | 1 | $0 | 1 |
| 93 | Perry | A | 8 | 0 | $0 | 1 |
| 94 | Piatt | A | 8 | 1 | $6,647 | 1 |
| 95 | Richland | A | 8 | 0 | $0 | 1 |
| 96 | Saline | A | 8 | 0 | $0 | 1 |
| 97 | Vermilion | A | 8 | 2 | $49,734 | 1 |
| 98 | Wabash | A | 8 | 0 | $0 | 1 |
| 99 | Wayne | A | 8 | 0 | $0 | 1 |
| 100 | White | A | 8 | 0 | $0 | 1 |
| 101 | Williamson | A | 8 | 0 | $0 | 1 |
| 102 | Madison | A | 7 | 13 | $131,469 | 6 |
| 103 | Kane | A | 6 | 8 | $51,244 | 5 |