115 counties
| County | Declarations | Major disasters | Most common hazard | Latest | Population 2024 |
|---|---|---|---|---|---|
| St. Louis County | 34 | 25 | Severe Storm | 2025 | 992,929 |
| Ray County | 33 | 26 | Severe Storm | 2021 | 23,199 |
| Webster County | 33 | 26 | Severe Storm | 2026 | 42,041 |
| Andrew County | 32 | 24 | Severe Storm | 2026 | 18,091 |
| Scott County | 31 | 24 | Severe Storm | 2026 | 37,957 |
| Ste. Genevieve County | 31 | 25 | Severe Storm | 2025 | 18,546 |
| Jefferson County | 30 | 22 | Severe Storm | 2025 | 231,888 |
| Miller County | 30 | 23 | Severe Storm | 2026 | 25,668 |
| Osage County | 30 | 22 | Severe Storm | 2026 | 13,478 |
| Barry County | 29 | 23 | Severe Storm | 2025 | 35,618 |
| Callaway County | 29 | 21 | Severe Storm | 2026 | 45,126 |
| Cape Girardeau County | 29 | 23 | Severe Storm | 2026 | 83,658 |
| Carroll County | 29 | 22 | Severe Storm | 2026 | 8,414 |
| Howard County | 29 | 21 | Severe Storm | 2026 | 10,150 |
| Lincoln County | 29 | 22 | Severe Storm | 2021 | 65,888 |
| Newton County | 29 | 23 | Severe Storm | 2026 | 61,519 |
| Perry County | 29 | 23 | Severe Storm | 2025 | 19,100 |
| Bollinger County | 28 | 22 | Severe Storm | 2026 | 10,610 |
| Buchanan County | 28 | 21 | Severe Storm | 2021 | 83,574 |
| Camden County | 28 | 20 | Severe Storm | 2026 | 44,135 |
| Chariton County | 28 | 21 | Severe Storm | 2026 | 7,397 |
| Maries County | 28 | 21 | Severe Storm | 2025 | 8,506 |
| Morgan County | 28 | 21 | Severe Storm | 2026 | 22,399 |
| New Madrid County | 28 | 22 | Severe Storm | 2025 | 15,212 |
| St. Charles County | 28 | 19 | Severe Storm | 2022 | 423,726 |
| Washington County | 28 | 20 | Severe Storm | 2026 | 23,583 |
| Wayne County | 28 | 21 | Severe Storm | 2026 | 10,820 |
| Boone County | 27 | 19 | Severe Storm | 2021 | 192,154 |
| Clark County | 27 | 18 | Severe Storm | 2023 | 6,623 |
| Greene County | 27 | 20 | Severe Storm | 2026 | 307,942 |
| Iron County | 27 | 19 | Severe Storm | 2026 | 9,420 |
| Lewis County | 27 | 20 | Severe Storm | 2026 | 9,852 |
| Ozark County | 27 | 20 | Severe Storm | 2025 | 9,090 |
| Reynolds County | 27 | 20 | Severe Storm | 2026 | 5,927 |
| Shannon County | 27 | 20 | Severe Storm | 2025 | 7,275 |
| Shelby County | 27 | 21 | Severe Storm | 2026 | 5,926 |
| Texas County | 27 | 20 | Severe Storm | 2025 | 25,715 |
| Adair County | 26 | 20 | Severe Storm | 2026 | 25,660 |
| Cole County | 26 | 18 | Severe Storm | 2020 | 77,625 |
| Jackson County | 26 | 19 | Severe Storm | 2020 | 727,362 |
| Knox County | 26 | 20 | Severe Storm | 2026 | 3,740 |
| Madison County | 26 | 19 | Severe Storm | 2026 | 12,852 |
| McDonald County | 26 | 20 | Severe Storm | 2025 | 24,054 |
| Montgomery County | 26 | 18 | Severe Storm | 2022 | 11,511 |
| Pemiscot County | 26 | 20 | Severe Storm | 2025 | 14,407 |
| Pike County | 26 | 19 | Severe Storm | 2020 | 17,961 |
| Platte County | 26 | 19 | Flood | 2020 | 113,207 |
| Ralls County | 26 | 19 | Severe Storm | 2021 | 10,499 |
| Saline County | 26 | 19 | Severe Storm | 2026 | 23,325 |
| Stoddard County | 26 | 20 | Severe Storm | 2025 | 28,438 |
| Vernon County | 26 | 19 | Severe Storm | 2026 | 19,787 |
| Clay County | 25 | 18 | Severe Storm | 2020 | 263,370 |
| Dade County | 25 | 20 | Severe Storm | 2026 | 7,622 |
| Dallas County | 25 | 18 | Severe Storm | 2020 | 17,877 |
| Douglas County | 25 | 18 | Severe Storm | 2025 | 12,290 |
| Holt County | 25 | 19 | Severe Storm | 2026 | 4,241 |
| Howell County | 25 | 18 | Severe Storm | 2025 | 40,762 |
| Lafayette County | 25 | 18 | Severe Storm | 2020 | 33,511 |
| Marion County | 25 | 18 | Severe Storm | 2026 | 28,425 |
| Mississippi County | 25 | 19 | Severe Storm | 2025 | 11,750 |
| Oregon County | 25 | 17 | Severe Storm | 2025 | 8,699 |
| Phelps County | 25 | 18 | Severe Storm | 2025 | 45,672 |
| Polk County | 25 | 18 | Severe Storm | 2026 | 33,070 |
| Pulaski County | 25 | 18 | Severe Storm | 2025 | 53,964 |
| St. Louis city | 25 | 17 | Severe Storm | 2025 | 279,695 |
| Sullivan County | 25 | 19 | Severe Storm | 2026 | 5,750 |
| Wright County | 25 | 18 | Severe Storm | 2025 | 19,505 |
| Barton County | 24 | 18 | Severe Storm | 2023 | 11,717 |
| Caldwell County | 24 | 18 | Severe Storm | 2021 | 9,000 |
| Cooper County | 24 | 16 | Severe Storm | 2025 | 17,122 |
| Crawford County | 24 | 17 | Severe Storm | 2026 | 22,808 |
| Daviess County | 24 | 18 | Severe Storm | 2026 | 8,541 |
| Franklin County | 24 | 16 | Flood | 2025 | 107,256 |
| Ripley County | 24 | 17 | Severe Storm | 2026 | 10,715 |
| Scotland County | 24 | 18 | Severe Storm | 2023 | 4,698 |
| St. Clair County | 24 | 17 | Severe Storm | 2023 | 9,848 |
| Stone County | 24 | 17 | Severe Storm | 2020 | 32,630 |
| Atchison County | 23 | 17 | Severe Storm | 2020 | 5,139 |
| Bates County | 23 | 17 | Severe Storm | 2023 | 16,394 |
| Butler County | 23 | 16 | Severe Storm | 2025 | 41,814 |
| Cedar County | 23 | 16 | Severe Storm | 2020 | 15,023 |
| Hickory County | 23 | 16 | Severe Storm | 2026 | 8,766 |
| Jasper County | 23 | 17 | Severe Storm | 2026 | 126,479 |
| Laclede County | 23 | 16 | Severe Storm | 2020 | 36,738 |
| Linn County | 23 | 17 | Severe Storm | 2026 | 11,910 |
| Livingston County | 23 | 17 | Severe Storm | 2021 | 14,658 |
| Macon County | 23 | 17 | Severe Storm | 2026 | 15,177 |
| Moniteau County | 23 | 15 | Severe Storm | 2026 | 15,294 |
| Taney County | 23 | 16 | Severe Storm | 2023 | 56,744 |
| Carter County | 22 | 15 | Severe Storm | 2025 | 5,359 |
| Christian County | 22 | 15 | Severe Storm | 2023 | 96,045 |
| Clinton County | 22 | 16 | Severe Storm | 2021 | 21,721 |
| DeKalb County | 22 | 16 | Severe Storm | 2020 | 9,884 |
| Dunklin County | 22 | 16 | Severe Storm | 2025 | 27,002 |
| Gentry County | 22 | 16 | Severe Storm | 2026 | 6,298 |
| Grundy County | 22 | 16 | Severe Storm | 2026 | 9,766 |
| Nodaway County | 22 | 16 | Severe Storm | 2026 | 20,503 |
| Benton County | 21 | 15 | Severe Storm | 2023 | 20,614 |
| Cass County | 21 | 15 | Severe Storm | 2020 | 113,873 |
| Gasconade County | 21 | 13 | Severe Storm | 2026 | 14,655 |
| Johnson County | 21 | 15 | Severe Storm | 2020 | 55,880 |
| Pettis County | 21 | 15 | Severe Storm | 2020 | 43,791 |
| St. Francois County | 21 | 14 | Severe Storm | 2026 | 67,503 |
| Worth County | 21 | 15 | Severe Storm | 2026 | 1,872 |
| Henry County | 20 | 14 | Severe Storm | 2023 | 22,575 |
| Lawrence County | 20 | 14 | Severe Storm | 2025 | 39,151 |
| Mercer County | 20 | 14 | Severe Storm | 2026 | 3,452 |
| Audrain County | 19 | 12 | Severe Storm | 2021 | 24,304 |
| Harrison County | 19 | 13 | Severe Storm | 2026 | 8,186 |
| Monroe County | 19 | 13 | Severe Storm | 2026 | 8,890 |
| Putnam County | 19 | 14 | Severe Storm | 2026 | 4,539 |
| Dent County | 18 | 10 | Severe Storm | 2025 | 14,721 |
| Randolph County | 18 | 12 | Severe Storm | 2026 | 24,077 |
| Schuyler County | 18 | 12 | Severe Storm | 2020 | 4,069 |
| Warren County | 17 | 9 | Flood | 2020 | 38,478 |