Fatal crash rate · State
Fatal crash rate in Iowa
Fatal crashes recorded by NHTSA in Iowa, 2020 to 2024, divided by the people who live there and the miles driven there. Fatal crashes only: not injuries, not all crashes, not traffic in general.
Iowa2024 · fatal crashes recorded by NHTSA
10.0fatal crashes per 100,000 residents in 2024
In 2024, NHTSA recorded 324 fatal crashes in Iowa, where 3,230,454 people lived. That is 10.0 fatal crashes for every 100,000 residents, and 356 people died in those crashes. Over 2020 to 2024 the average was 10.0. Per mile driven, Iowa had 1.0 fatal crashes per 100 million vehicle-miles in 2024.
The road is a scale of fatal crashes per 100,000 residents in 2024, 0 to 40. The yellow post is Iowa; the white posts are the United States.
- Per 100,000
- 324 fatal crashes ÷ 3,230,454 residents × 100,000 = 10.0
- Five-year
- 1,598 crashes (2020 to 2024) ÷ 16,037,201 resident-years × 100,000 = 10.0
- Per 100M miles
- 324 fatal crashes ÷ 33,817 million vehicle-miles (2024) × 100 = 1.0
- Same year
- United States: 36,297 ÷ 340,003,797 = 10.7
Every year, 2020 to 2024
| Year | Fatal crashes | Deaths | Population | Per 100,000 | Vehicle-miles (millions) | Per 100M miles |
|---|---|---|---|---|---|---|
| 2020 | 310 | 343 | 3,191,081 | 9.7 | — | — |
| 2021 | 329 | 356 | 3,199,037 | 10.3 | 33,039 | 1.0 |
| 2022 | 305 | 336 | 3,201,890 | 9.5 | 32,712 | 0.9 |
| 2023 | 330 | 379 | 3,214,739 | 10.3 | — | — |
| 2024 | 324 | 356 | 3,230,454 | 10.0 | 33,817 | 1.0 |
2024 is NHTSA’s Annual Report File and will be revised when the final file replaces it. Populations are July 1 estimates, Census Vintage 2025.
What the record says about those crashes, 2020 to 2024
Every figure is a count of the 1,598 fatal crashes NHTSA coded to Iowa over five years, from the fields FARS records. Nothing is estimated or inferred.
| Road type | Crashes | Share |
|---|---|---|
| Interstate | 175 | 11% |
| Other freeway or expressway | 2 | 0% |
| Other principal arterial | 468 | 29% |
| Minor arterial | 266 | 17% |
| Major collector | 342 | 21% |
| Minor collector | 87 | 5% |
| Local road | 254 | 16% |
| Unknown or not reported | 4 | 0% |
| Rural | 1,088 | 68% |
| Urban | 506 | 32% |
| Time of day | Crashes | Share |
|---|---|---|
| Midnight to 5:59 am | 252 | 16% |
| 6 am to 11:59 am | 316 | 20% |
| Noon to 5:59 pm | 553 | 35% |
| 6 pm to 11:59 pm | 477 | 30% |
| Hour unknown | 0 | 0% |
| Light | Crashes | Share |
|---|---|---|
| Daylight | 861 | 54% |
| Dark, not lighted (or lighting unknown) | 453 | 28% |
| Dark, lighted | 183 | 11% |
| Dawn or dusk | 91 | 6% |
| Unknown or not reported | 10 | 1% |
| Weather | Crashes | Share |
|---|---|---|
| Clear | 1,211 | 76% |
| Cloudy | 218 | 14% |
| Rain | 71 | 4% |
| Snow, sleet or freezing rain | 40 | 3% |
| Fog, smog or smoke | 26 | 2% |
| Severe wind, blowing sand or other | 13 | 1% |
| Unknown or not reported | 19 | 1% |
| Involving | Crashes | Share |
|---|---|---|
| A pedestrian | 132 | 8% |
| A bicyclist or other cyclist | 34 | 2% |
| A speeding-related vehicle | 329 | 21% |
| A driver police reported as drinking | 339 | 21% |
Road type is FARS FUNC_SYS; speeding is any vehicle coded SPEEDREL 2 to 5; drinking is any driver coded DRINKING = 1 (police-reported, not a blood-alcohol test). Road names are the trafficway strings as the police coded them, counted as written, so the same road can appear under two spellings.
Counties in Iowa
Alphabetical, with each county’s 2024 fatal crashes and rate per 100,000. The site does not rank them: a small county’s rate swings on one crash.
- Adair County 0 · 0.0
- Adams County 0 · 0.0
- Allamakee County 2 · 14.1
- Appanoose County 0 · 0.0
- Audubon County 1 · 18.0
- Benton County 4 · 15.5
- Black Hawk County 15 · 11.4
- Boone County 2 · 7.5
- Bremer County 0 · 0.0
- Buchanan County 1 · 4.8
- Buena Vista County 2 · 9.7
- Butler County 2 · 14.2
- Calhoun County 1 · 10.4
- Carroll County 3 · 14.7
- Cass County 1 · 7.7
- Cedar County 4 · 21.9
- Cerro Gordo County 7 · 16.5
- Cherokee County 0 · 0.0
- Chickasaw County 1 · 8.5
- Clarke County 1 · 10.4
- Clay County 2 · 12.1
- Clayton County 2 · 11.8
- Clinton County 4 · 8.7
- Crawford County 2 · 12.3
- Dallas County 2 · 1.7
- Davis County 1 · 10.9
- Decatur County 2 · 26.1
- Delaware County 2 · 11.4
- Des Moines County 3 · 7.9
- Dickinson County 2 · 11.1
- Dubuque County 10 · 10.1
- Emmet County 0 · 0.0
- Fayette County 3 · 15.7
- Floyd County 1 · 6.6
- Franklin County 1 · 10.0
- Fremont County 2 · 30.8
- Greene County 4 · 46.2
- Grundy County 0 · 0.0
- Guthrie County 2 · 18.7
- Hamilton County 3 · 20.0
- Hancock County 2 · 18.8
- Hardin County 3 · 18.2
- Harrison County 0 · 0.0
- Henry County 3 · 15.5
- Howard County 0 · 0.0
- Humboldt County 2 · 21.0
- Ida County 1 · 14.8
- Iowa County 6 · 36.4
- Jackson County 3 · 15.5
- Jasper County 3 · 7.9
- Jefferson County 1 · 6.5
- Johnson County 8 · 5.0
- Jones County 5 · 23.6
- Keokuk County 1 · 10.2
- Kossuth County 3 · 20.7
- Lee County 4 · 12.3
- Linn County 16 · 6.9
- Louisa County 0 · 0.0
- Lucas County 1 · 11.3
- Lyon County 2 · 16.1
- Madison County 3 · 17.5
- Mahaska County 1 · 4.6
- Marion County 4 · 11.8
- Marshall County 4 · 10.0
- Mills County 3 · 20.3
- Mitchell County 1 · 9.4
- Monona County 1 · 11.8
- Monroe County 1 · 13.5
- Montgomery County 1 · 9.9
- Muscatine County 9 · 21.3
- O'Brien County 2 · 14.1
- Osceola County 0 · 0.0
- Page County 1 · 6.7
- Palo Alto County 1 · 11.2
- Plymouth County 5 · 19.5
- Pocahontas County 0 · 0.0
- Polk County 40 · 7.8
- Pottawattamie County 9 · 9.6
- Poweshiek County 4 · 21.7
- Ringgold County 1 · 21.5
- Sac County 3 · 31.2
- Scott County 22 · 12.6
- Shelby County 2 · 17.0
- Sioux County 2 · 5.4
- Story County 4 · 3.9
- Tama County 2 · 11.9
- Taylor County 0 · 0.0
- Union County 1 · 8.4
- Van Buren County 2 · 27.8
- Wapello County 4 · 11.3
- Warren County 4 · 7.1
- Washington County 5 · 22.1
- Wayne County 2 · 30.1
- Webster County 3 · 8.2
- Winnebago County 3 · 29.0
- Winneshiek County 2 · 10.2
- Woodbury County 10 · 9.4
- Worth County 2 · 27.4
- Wright County 1 · 7.8
How this is counted
- Fatal crashes are rows in NHTSA’s Fatality Analysis Reporting System (FARS) file
FARS2024NationalCSV.zip,accident.csv, one row per crash on a public road in which someone died within 30 days. Deaths are theFATALSfield. Counties are the FARSSTATEandCOUNTYcodes joined to Census FIPS codes. - Population is the Census Bureau’s July 1 estimate for the same year, county totals, Vintage 2025. Rate per 100,000 = crashes ÷ population × 100,000.
- Vehicle-miles are FHWA Highway Statistics table VM-2, total annual travel by state. Rate per 100 million vehicle-miles = crashes ÷ miles × 100,000,000, the form the federal safety rule uses (23 CFR 490.207). FHWA publishes no county vehicle-miles, so county pages have no per-mile rate.
- The five-year average is total crashes over the years with both inputs ÷ total population over those years × 100,000, the rolling form in 23 CFR 490.207.
- What it cannot say. FARS has no injury-only or property-damage crashes, no congestion, and nothing about any one driver, trip or road’s risk. A crash is counted where it happened, not where the people lived. Rates are not ranked here; comparing two places means comparing both sets of inputs.
Informational only, not professional advice. Last reviewed: October 2026. Data snapshot built 2026-10-28.