Mississippi inland flooding risk
Hinds County has the highest inland flooding risk in Mississippi, scoring 95.1 out of 100 — rated "Relatively High" by FEMA's National Risk Index. Recorded inland flooding events across Mississippi have decreased 33% over the past five years compared to the prior five-year period.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Hinds County | 95.1 | Relatively High | 104 |
| 2 | Harrison County | 90.5 | Relatively Moderate | 43 |
| 3 | Jackson County | 86.8 | Relatively Moderate | 19 |
| 4 | Washington County | 81.2 | Relatively Moderate | 30 |
| 5 | DeSoto County | 80.1 | Relatively Moderate | 27 |
| 6 | Lauderdale County | 80.1 | Relatively Moderate | 44 |
| 7 | Rankin County | 79.6 | Relatively Moderate | 154 |
| 8 | Lowndes County | 78.1 | Relatively Moderate | 29 |
| 9 | Bolivar County | 76.9 | Relatively Moderate | 19 |
| 10 | Madison County | 76.8 | Relatively Moderate | 49 |
| 11 | Pearl River County | 73.2 | Relatively Moderate | 7 |
| 12 | Warren County | 72.8 | Relatively Low | 29 |
| 13 | Lee County | 72 | Relatively Low | 31 |
| 14 | Jones County | 71.5 | Relatively Low | 75 |
| 15 | Leflore County | 70 | Relatively Low | 11 |
| 16 | Forrest County | 69.6 | Relatively Low | 72 |
| 17 | Hancock County | 67.2 | Relatively Low | 6 |
| 18 | Pike County | 64.8 | Relatively Low | 5 |
| 19 | Lamar County | 62.1 | Relatively Low | 37 |
| 20 | Marshall County | 59.3 | Relatively Low | 7 |
| 21 | Adams County | 59 | Relatively Low | 12 |
| 22 | Grenada County | 58.7 | Relatively Low | 22 |
| 23 | Sunflower County | 55 | Relatively Low | 22 |
| 24 | Oktibbeha County | 53.2 | Relatively Low | 35 |
| 25 | Monroe County | 52.4 | Relatively Low | 13 |
| 26 | Alcorn County | 51.6 | Relatively Low | 7 |
| 27 | Simpson County | 51.6 | Relatively Low | 25 |
| 28 | Yazoo County | 48.5 | Relatively Low | 40 |
| 29 | Marion County | 48.1 | Relatively Low | 34 |
| 30 | Lafayette County | 47.8 | Relatively Low | 9 |
| 31 | Copiah County | 46.7 | Relatively Low | 16 |
| 32 | Amite County | 46.3 | Relatively Low | 5 |
| 33 | Coahoma County | 46.3 | Relatively Low | 2 |
| 34 | Leake County | 45.3 | Relatively Low | 24 |
| 35 | Panola County | 43.9 | Relatively Low | 9 |
| 36 | Wayne County | 43 | Relatively Low | 11 |
| 37 | Lincoln County | 42.5 | Relatively Low | 19 |
| 38 | Covington County | 42.2 | Relatively Low | 27 |
| 39 | Scott County | 42 | Relatively Low | 24 |
| 40 | Neshoba County | 41.4 | Relatively Low | 25 |
| 41 | Smith County | 40.8 | Relatively Low | 22 |
| 42 | Prentiss County | 40.6 | Relatively Low | 9 |
| 43 | Greene County | 38.3 | Relatively Low | 7 |
| 44 | Union County | 38.1 | Relatively Low | 9 |
| 45 | Clarke County | 36.7 | Relatively Low | 25 |
| 46 | Newton County | 36.6 | Relatively Low | 27 |
| 47 | Pontotoc County | 35.8 | Relatively Low | 14 |
| 48 | Clay County | 33.8 | Very Low | 14 |
| 49 | Wilkinson County | 33.8 | Very Low | 7 |
| 50 | Holmes County | 32.3 | Very Low | 10 |
| 51 | George County | 31.2 | Very Low | 11 |
| 52 | Tishomingo County | 30.8 | Very Low | 7 |
| 53 | Tallahatchie County | 30.3 | Very Low | 6 |
| 54 | Lawrence County | 28.3 | Very Low | 13 |
| 55 | Itawamba County | 28.2 | Very Low | 8 |
| 56 | Attala County | 27.9 | Very Low | 9 |
| 57 | Jasper County | 26.9 | Very Low | 20 |
| 58 | Stone County | 26.7 | Very Low | 22 |
| 59 | Chickasaw County | 26.5 | Very Low | 10 |
| 60 | Tate County | 26.5 | Very Low | 8 |
| 61 | Walthall County | 26.3 | Very Low | 4 |
| 62 | Tippah County | 26 | Very Low | 2 |
| 63 | Claiborne County | 25.8 | Very Low | 7 |
| 64 | Calhoun County | 25.3 | Very Low | 10 |
| 65 | Tunica County | 23.9 | Very Low | 6 |
| 66 | Jefferson Davis County | 23.8 | Very Low | 16 |
| 67 | Perry County | 23.6 | Very Low | 15 |
| 68 | Franklin County | 23.2 | Very Low | 16 |
| 69 | Noxubee County | 23 | Very Low | 10 |
| 70 | Humphreys County | 22.5 | Very Low | 4 |
| 71 | Winston County | 22.2 | Very Low | 21 |
| 72 | Carroll County | 20.4 | Very Low | 16 |
| 73 | Yalobusha County | 19.1 | Very Low | 6 |
| 74 | Jefferson County | 16.9 | Very Low | 2 |
| 75 | Quitman County | 15.8 | Very Low | 3 |
| 76 | Montgomery County | 14.6 | Very Low | 11 |
| 77 | Benton County | 14.2 | Very Low | 0 |
| 78 | Webster County | 13.4 | Very Low | 11 |
| 79 | Sharkey County | 12.2 | Very Low | 6 |
| 80 | Issaquena County | 10.2 | Very Low | 1 |
| 81 | Choctaw County | 10 | Very Low | 13 |
| 82 | Kemper County | 9.4 | Very Low | 6 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Inland Flooding risk nationally:
Other hazard risks in Mississippi:
Frequently asked questions
What is the highest inland flooding risk county in Mississippi?
Hinds County, MS has the highest inland flooding risk in Mississippi, with a FEMA National Risk Index score of 95.1 out of 100 (rated "Relatively High").
What causes inland flooding risk in Mississippi?
Inland flooding covers riverine and surface (pluvial) flooding — the most common and costly natural disaster type in the US. High scores appear across river floodplains in the Midwest, South, and Mid-Atlantic, where legacy development in flood-prone areas and aging stormwater infrastructure concentrate risk.