# Counties in Iowa by traffic fatality rate, 2024

All 99 values come from Invokely for 2024, so the places are comparable.

- Indicator id: `traffic_fatality_rate_per_100k`
- Unit: per 100,000 people
- Definition: Traffic fatalities (NHTSA FARS) per 100,000 residents in the same year and place.
- Source: Invokely, NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents (https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k)
- Retrieved: 2026-10-12
- Citation: Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/traffic-fatality-rate/iowa-counties

| Rank | Place | per 100,000 people |
|---:|---|---:|
| 1 | Worth County | 54.7 |
| 2 | Greene County | 46.2 |
| 3 | Wayne County | 45.3 |
| 4 | Decatur County | 39.2 |
| 5 | Iowa County | 36.5 |
| 6 | Washington County | 35.4 |
| 7 | Sac County | 31.5 |
| 8 | Humboldt County | 31.2 |
| 9 | Fremont County | 30.8 |
| 10 | Winnebago County | 28.9 |
| 11 | Van Buren County | 27.7 |
| 12 | Hardin County | 24.3 |
| 13 | Jones County | 23.7 |
| 14 | Plymouth County | 23.2 |
| 15 | Cedar County | 21.9 |
| 16 | Ringgold County | 21.7 |
| 17 | Poweshiek County | 21.7 |
| 18 | Muscatine County | 21.4 |
| 19 | Kossuth County | 20.8 |
| 20 | Mills County | 20.4 |
| 21 | Hamilton County | 20.2 |
| 22 | Carroll County | 19.6 |
| 23 | Hancock County | 18.8 |
| 24 | Guthrie County | 18.6 |
| 25 | Audubon County | 18 |
| 26 | Madison County | 17.5 |
| 27 | Shelby County | 16.9 |
| 28 | Cerro Gordo County | 16.5 |
| 29 | Lyon County | 16.2 |
| 30 | Fayette County | 15.7 |
| 31 | Benton County | 15.5 |
| 32 | Henry County | 15.5 |
| 33 | Jackson County | 15.5 |
| 34 | Clinton County | 15.2 |
| 35 | Ida County | 14.7 |
| 36 | Buena Vista County | 14.4 |
| 37 | Butler County | 14.1 |
| 38 | Allamakee County | 14.1 |
| 39 | O'Brien County | 14 |
| 40 | Monroe County | 13.6 |
| 41 | Scott County | 13.1 |
| 42 | Lee County | 12.4 |
| 43 | Crawford County | 12.2 |
| 44 | Clay County | 12.1 |
| 45 | Tama County | 11.9 |
| 46 | Monona County | 11.9 |
| 47 | Clayton County | 11.8 |
| 48 | Marion County | 11.7 |
| 49 | Lucas County | 11.4 |
| 50 | Delaware County | 11.4 |
| 51 | Palo Alto County | 11.4 |
| 52 | Black Hawk County | 11.3 |
| 53 | Boone County | 11.2 |
| 54 | Wapello County | 11.2 |
| 55 | Dubuque County | 11.1 |
| 56 | Dickinson County | 11 |
| 57 | Davis County | 10.9 |
| 58 | Webster County | 10.8 |
| 59 | Clarke County | 10.5 |
| 60 | Jasper County | 10.5 |
| 61 | Calhoun County | 10.3 |
| 62 | Woodbury County | 10.3 |
| 63 | Keokuk County | 10.1 |
| 64 | Winneshiek County | 10.1 |
| 65 | Franklin County | 10 |
| 66 | Montgomery County | 9.9 |
| 67 | Marshall County | 9.9 |
| 68 | Pottawattamie County | 9.6 |
| 69 | Mitchell County | 9.4 |
| 70 | Polk County | 9.1 |
| 71 | Mahaska County | 9.1 |
| 72 | Chickasaw County | 8.5 |
| 73 | Union County | 8.4 |
| 74 | Sioux County | 8.2 |
| 75 | Wright County | 7.9 |
| 76 | Des Moines County | 7.8 |
| 77 | Linn County | 7.8 |
| 78 | Cass County | 7.7 |
| 79 | Warren County | 7.1 |
| 80 | Floyd County | 6.7 |
| 81 | Page County | 6.7 |
| 82 | Jefferson County | 6.3 |
| 83 | Johnson County | 5 |
| 84 | Buchanan County | 4.8 |
| 85 | Story County | 3.9 |
| 86 | Dallas County | 1.7 |
| 87 | Adair County | 0 |
| 87 | Adams County | 0 |
| 87 | Appanoose County | 0 |
| 87 | Bremer County | 0 |
| 87 | Cherokee County | 0 |
| 87 | Emmet County | 0 |
| 87 | Grundy County | 0 |
| 87 | Harrison County | 0 |
| 87 | Howard County | 0 |
| 87 | Louisa County | 0 |
| 87 | Osceola County | 0 |
| 87 | Pocahontas County | 0 |
| 87 | Taylor County | 0 |