Counties in Arizona by traffic fatalities

Maricopa County had the highest traffic fatalities of 15 counties in 2020, at 492. Greenlee County had the lowest, at 0. The median was 30 and the figure for Arizona was 1,053. Source: National Highway Traffic Safety Administration.

Highest492Maricopa County

Lowest0Greenlee County

Median3015 counties

Arizona1,053History

Map of counties, 2020

Under 16
16 to 24
24 to 40
40 to 57
57 and over

count, 2020. Source: NHTSA, Fatality Analysis Reporting System (FARS), national CSV files: people killed (sum of FATALS in accident.csv) by county of the crash. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

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	2020 count	Change on 2019
1	Maricopa County	492	+11.3%
2	Pima County	165	+17.9%
3	Yavapai County	63	+14.5%
4	Pinal County	56	-21.1%
5	Mohave County	55	-1.8%
6	Coconino County	43	-14%
7	Navajo County	38	+40.7%
8	Yuma County	30	+7.1%
9	Gila County	24	+41.2%
10	Apache County	23	-32.4%
10	Cochise County	23	-11.5%
12	La Paz County	17	0%
13	Graham County	14	+100%
14	Santa Cruz County	7	+16.7%
15	Greenlee 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/2020/National/FARS2020NationalCSV.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 Arizona by traffic fatalities, 2020) [Data set]. Retrieved October 12, 2026, from https://static.nhtsa.gov/nhtsa/downloads/FARS/2020/National/FARS2020NationalCSV.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 Arizona by traffic fatalities, 2020. National Highway Traffic Safety Administration, 24 June 2026, https://static.nhtsa.gov/nhtsa/downloads/FARS/2020/National/FARS2020NationalCSV.zip. Invokely, https://invokely.ai/rankings/traffic-fatalities/arizona-counties?period=2020. 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 Arizona by traffic fatalities, 2020. Dataset. Accessed October 12, 2026. https://static.nhtsa.gov/nhtsa/downloads/FARS/2020/National/FARS2020NationalCSV.zip. Also distributed by Invokely, https://invokely.ai/rankings/traffic-fatalities/arizona-counties?period=2020.

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 Arizona by traffic fatalities, 2020 [Dataset]. Available at: https://static.nhtsa.gov/nhtsa/downloads/FARS/2020/National/FARS2020NationalCSV.zip, via Invokely: https://invokely.ai/rankings/traffic-fatalities/arizona-counties?period=2020 (Accessed: 12 October 2026).

BibTeX

@misc{national_counties_in_arizona_by_2020,
  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 Arizona by traffic fatalities, 2020}},
  year = {2026},
  howpublished = {Data set},
  url = {https://static.nhtsa.gov/nhtsa/downloads/FARS/2020/National/FARS2020NationalCSV.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/traffic-fatalities/arizona-counties?period=2020. 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/2020/National/FARS2020NationalCSV.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 Arizona by traffic fatalities, 2020
PY  - 2026
DA  - 2026/06/24
PB  - National Highway Traffic Safety Administration
DB  - Invokely
UR  - https://static.nhtsa.gov/nhtsa/downloads/FARS/2020/National/FARS2020NationalCSV.zip
L2  - https://invokely.ai/rankings/traffic-fatalities/arizona-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/traffic-fatalities/arizona-counties?period=2020.
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/2020/National/FARS2020NationalCSV.zip. Retrieved 2026-10-12.
ER  -

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Questions

Which county has the highest traffic fatalities?

Maricopa County, with 492 in 2020, according to National Highway Traffic Safety Administration.

Which county has the lowest traffic fatalities?

Greenlee County, with 0 in 2020.

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.