South Dakota Threat Assessment
66 counties ranked by FEMA National Risk Index composite score.
| County | Threat Level | NRI Score | Rating |
|---|---|---|---|
| Oglala Lakota County | High | 18.8 | Relatively Moderate |
| Minnehaha County | High | 17.7 | Relatively Moderate |
| Todd County | High | 15.9 | Relatively Moderate |
| Pennington County | High | 14.1 | Relatively Moderate |
| Roberts County | Elevated | 13.6 | Relatively Moderate |
| Brown County | Elevated | 12.7 | Relatively Low |
| Charles Mix County | Elevated | 12.7 | Relatively Low |
| Hutchinson County | Elevated | 12.3 | Relatively Low |
| Dewey County | Elevated | 12.2 | Relatively Low |
| Day County | Elevated | 11.6 | Relatively Low |
| Beadle County | Elevated | 11.5 | Relatively Low |
| Corson County | Elevated | 10.3 | Relatively Low |
| Lawrence County | Elevated | 10.1 | Relatively Low |
| Buffalo County | Elevated | 9.9 | Relatively Low |
| Codington County | Elevated | 9.8 | Relatively Low |
| Davison County | Elevated | 9.8 | Relatively Low |
| Ziebach County | Elevated | 9.8 | Relatively Low |
| Fall River County | Elevated | 9.7 | Relatively Low |
| Spink County | Elevated | 9.6 | Relatively Low |
| Yankton County | Elevated | 9.3 | Relatively Low |
| Bennett County | Elevated | 9.2 | Relatively Low |
| Walworth County | Moderate | 9.0 | Relatively Low |
| McPherson County | Moderate | 8.8 | Relatively Low |
| Lake County | Moderate | 8.5 | Relatively Low |
| Moody County | Moderate | 8.4 | Relatively Low |
| Turner County | Moderate | 8.1 | Very Low |
| Brookings County | Moderate | 7.7 | Very Low |
| Clark County | Moderate | 7.7 | Very Low |
| Custer County | Moderate | 7.6 | Very Low |
| Potter County | Moderate | 7.6 | Very Low |
| Douglas County | Moderate | 7.5 | Very Low |
| Marshall County | Moderate | 7.5 | Very Low |
| Tripp County | Moderate | 7.5 | Very Low |
| Jerauld County | Moderate | 7.3 | Very Low |
| Brule County | Moderate | 7.2 | Very Low |
| Kingsbury County | Moderate | 7.2 | Very Low |
| Hand County | Moderate | 7.1 | Very Low |
| Gregory County | Moderate | 7.0 | Very Low |
| McCook County | Moderate | 7.0 | Very Low |
| Butte County | Moderate | 6.8 | Very Low |
| Clay County | Moderate | 6.8 | Very Low |
| Hughes County | Moderate | 6.7 | Very Low |
| Lyman County | Moderate | 6.7 | Very Low |
| Mellette County | Moderate | 6.7 | Very Low |
| Campbell County | Guarded | 6.4 | Very Low |
| Grant County | Guarded | 6.4 | Very Low |
| Hamlin County | Guarded | 6.1 | Very Low |
| Perkins County | Guarded | 6.0 | Very Low |
| Edmunds County | Guarded | 5.9 | Very Low |
| Faulk County | Guarded | 5.9 | Very Low |
| Deuel County | Guarded | 5.6 | Very Low |
| Jackson County | Guarded | 5.6 | Very Low |
| Meade County | Guarded | 5.5 | Very Low |
| Aurora County | Guarded | 5.0 | Very Low |
| Lincoln County | Guarded | 5.0 | Very Low |
| Miner County | Guarded | 5.0 | Very Low |
| Hyde County | Guarded | 4.9 | Very Low |
| Hanson County | Guarded | 4.8 | Very Low |
| Sanborn County | Guarded | 4.8 | Very Low |
| Bon Homme County | Guarded | 4.7 | Very Low |
| Union County | Guarded | 4.1 | Very Low |
| Haakon County | Guarded | 3.8 | Very Low |
| Stanley County | Guarded | 3.7 | Very Low |
| Jones County | Guarded | 3.3 | Very Low |
| Harding County | Guarded | 2.0 | Very Low |
| Sully County | Guarded | 1.2 | Very Low |