Counties in Iowa by traffic fatalities

Polk County had the highest traffic fatalities of 99 counties in 2013, at 26. Worth County had the lowest, at 0. The median was 2 and the figure for Iowa was 317. Source: National Highway Traffic Safety Administration.

Highest26Polk County

Lowest0Worth County

Median299 counties

Iowa317History

Top 40 counties, 2013

count. Source: NHTSA, Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2013 count	Change on 2012
1	Polk County	26	+30%
2	Woodbury County	14	+40%
3	Black Hawk County	12	+100%
3	Linn County	12	-33.3%
5	Scott County	11	+22.2%
6	Pottawattamie County	9	-25%
7	Dallas County	8	+100%
8	Benton County	7	+133.3%
8	Jasper County	7	+40%
8	Johnson County	7	-56.3%
8	Warren County	7	+75%
12	Fayette County	6	+50%
12	Mahaska County	6	+100%
12	Webster County	6	-40%
15	Allamakee County	5	+150%
15	Cass County	5	+66.7%
15	Harrison County	5	0%
15	Monona County	5	n/a
15	Union County	5	+25%
20	Cedar County	4	+100%
20	Des Moines County	4	-33.3%
20	Dubuque County	4	-20%
20	Grundy County	4	+33.3%
20	Hancock County	4	+300%
20	Henry County	4	-42.9%
20	Humboldt County	4	-20%
20	Lyon County	4	+100%
20	Poweshiek County	4	+100%
29	Adair County	3	-25%
29	Appanoose County	3	n/a
29	Audubon County	3	+200%
29	Boone County	3	-57.1%
29	Butler County	3	n/a
29	Cerro Gordo County	3	-25%
29	Chickasaw County	3	+50%
29	Delaware County	3	-25%
29	Floyd County	3	n/a
29	Greene County	3	0%
29	Guthrie County	3	0%
29	Jackson County	3	+50%
29	Kossuth County	3	+200%
29	Louisa County	3	+200%
29	Marshall County	3	-72.7%
29	Mills County	3	-40%
29	Page County	3	+200%
29	Story County	3	+200%
29	Tama County	3	+50%
29	Taylor County	3	+200%
29	Wright County	3	0%
50	Buena Vista County	2	+100%
50	Carroll County	2	-60%
50	Clarke County	2	0%
50	Clay County	2	0%
50	Clayton County	2	-71.4%
50	Clinton County	2	-77.8%
50	Dickinson County	2	0%
50	Emmet County	2	-33.3%
50	Franklin County	2	0%
50	Iowa County	2	0%
50	Jefferson County	2	-60%
50	Jones County	2	0%
50	Lee County	2	-60%
50	Madison County	2	n/a
50	Marion County	2	-33.3%
50	Mitchell County	2	n/a
50	Muscatine County	2	-50%
50	O'Brien County	2	0%
50	Sac County	2	n/a
50	Sioux County	2	-33.3%
50	Washington County	2	-60%
71	Adams County	1	-50%
71	Bremer County	1	-50%
71	Buchanan County	1	-66.7%
71	Decatur County	1	0%
71	Fremont County	1	-75%
71	Hardin County	1	0%
71	Howard County	1	n/a
71	Keokuk County	1	0%
71	Shelby County	1	-75%
71	Wapello County	1	-87.5%
71	Wayne County	1	-50%
71	Winneshiek County	1	-50%
83	Calhoun County	0	-100%
83	Cherokee County	0	n/a
83	Crawford County	0	-100%
83	Davis County	0	-100%
83	Hamilton County	0	-100%
83	Ida County	0	-100%
83	Lucas County	0	-100%
83	Monroe County	0	-100%
83	Montgomery County	0	-100%
83	Osceola County	0	-100%
83	Palo Alto County	0	-100%
83	Plymouth County	0	-100%
83	Pocahontas County	0	n/a
83	Ringgold County	0	-100%
83	Van Buren County	0	n/a
83	Winnebago County	0	-100%
83	Worth County	0	-100%

Other periods

About this ranking

People killed in motor vehicle traffic crashes during the year. FARS counts people who die within 30 days of a crash involving a motor vehicle travelling on a public road, by the place of the crash, not of residence.

A police-based count of deaths. It differs from death certificate counts (CDC) and from the WHO road traffic death rate (road_traffic_death_rate), which is modelled for international comparison.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

National Highway Traffic Safety Administration (NHTSA), Fatality Analysis Reporting System. Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

National Highway Traffic Safety Administration. (2026). Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash (Counties in Iowa by traffic fatalities, 2013) [Data set]. Retrieved October 12, 2026, from https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip

MLA 9

Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash, Counties in Iowa by traffic fatalities, 2013. National Highway Traffic Safety Administration, 24 June 2026, https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip. Invokely, https://invokely.ai/rankings/traffic-fatalities/iowa-counties?period=2013. Accessed 12 Oct. 2026.

Chicago (author-date)

National Highway Traffic Safety Administration. 2026. Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. Counties in Iowa by traffic fatalities, 2013. Dataset. Accessed October 12, 2026. https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip. Also distributed by Invokely, https://invokely.ai/rankings/traffic-fatalities/iowa-counties?period=2013.

Harvard

National Highway Traffic Safety Administration (2026) Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash, Counties in Iowa by traffic fatalities, 2013 [Dataset]. Available at: https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip, via Invokely: https://invokely.ai/rankings/traffic-fatalities/iowa-counties?period=2013 (Accessed: 12 October 2026).

BibTeX

@misc{national_counties_in_iowa_by_2013,
  author = {{National Highway Traffic Safety Administration}},
  title = {{Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash: Counties in Iowa by traffic fatalities, 2013}},
  year = {2026},
  howpublished = {Data set},
  url = {https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/traffic-fatalities/iowa-counties?period=2013. Publisher attribution: National Highway Traffic Safety Administration (NHTSA), Fatality Analysis Reporting System. Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - National Highway Traffic Safety Administration
TI  - Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash: Counties in Iowa by traffic fatalities, 2013
PY  - 2026
DA  - 2026/06/24
PB  - National Highway Traffic Safety Administration
DB  - Invokely
UR  - https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip
L2  - https://invokely.ai/rankings/traffic-fatalities/iowa-counties?period=2013
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/traffic-fatalities/iowa-counties?period=2013.
N1  - Publisher attribution: National Highway Traffic Safety Administration (NHTSA), Fatality Analysis Reporting System. Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. https://static.nhtsa.gov/nhtsa/downloads/FARS/2013/National/FARS2013NationalCSV.zip. Retrieved 2026-10-12.
ER  -

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Questions

Which county has the highest traffic fatalities?

Polk County, with 26 in 2013, according to National Highway Traffic Safety Administration.

Which county has the lowest traffic fatalities?

Worth County, with 0 in 2013.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: National Highway Traffic Safety Administration, Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. Retrieved 2026-10-12.