Data / Rankings / Traffic fatality rate / Counties in Idaho

Counties in Idaho by traffic fatality rate

Camas County had the highest traffic fatality rate of 44 counties in 2021, at 175.9 per 100,000 people. Shoshone County had the lowest, at 0 per 100,000 people. The median was 21.4 per 100,000 people and the figure for Idaho was 14.3 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Highest175.9Camas County
Lowest0Shoshone County
Median21.444 counties
Idaho14.3History

Map of counties, 2021

Ada County: 4.1 per 100,000 peopleAdams County: 21.6 per 100,000 peopleBannock County: 14.7 per 100,000 peopleBear Lake County: 0 per 100,000 peopleBenewah County: 20.2 per 100,000 peopleBingham County: 32.7 per 100,000 peopleBlaine County: 28.2 per 100,000 peopleBoise County: 110.7 per 100,000 peopleBonner County: 18.1 per 100,000 peopleBonneville County: 16.4 per 100,000 peopleBoundary County: 7.9 per 100,000 peopleButte County: 75 per 100,000 peopleCamas County: 175.9 per 100,000 peopleCanyon County: 11.9 per 100,000 peopleCaribou County: 28.1 per 100,000 peopleCassia County: 35.7 per 100,000 peopleClark County: 125.9 per 100,000 peopleClearwater County: 22.4 per 100,000 peopleCuster County: 67.5 per 100,000 peopleElmore County: 55.2 per 100,000 peopleFranklin County: 0 per 100,000 peopleFremont County: 22.1 per 100,000 peopleGem County: 20.2 per 100,000 peopleGooding County: 25.3 per 100,000 peopleIdaho County: 35.2 per 100,000 peopleJefferson County: 6.2 per 100,000 peopleJerome County: 52.5 per 100,000 peopleKootenai County: 11.1 per 100,000 peopleLatah County: 17.3 per 100,000 peopleLemhi County: 73.5 per 100,000 peopleLewis County: 27.1 per 100,000 peopleLincoln County: 56.7 per 100,000 peopleMadison County: 7.4 per 100,000 peopleMinidoka County: 9.1 per 100,000 peopleNez Perce County: 21.2 per 100,000 peopleOneida County: 43.4 per 100,000 peopleOwyhee County: 56.6 per 100,000 peoplePayette County: 19 per 100,000 peoplePower County: 0 per 100,000 peopleShoshone County: 0 per 100,000 peopleTeton County: 8.1 per 100,000 peopleTwin Falls County: 4.3 per 100,000 peopleValley County: 24.5 per 100,000 peopleWashington County: 9.2 per 100,000 people
  • Under 7
  • 7 to 15
  • 15 to 21
  • 21 to 28
  • 28 to 56
  • 56 and over
per 100,000 people, 2021. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Camas County: 175.9 per 100,000 peopleCamas County175.9Clark County: 125.9 per 100,000 peopleClark County125.9Boise County: 110.7 per 100,000 peopleBoise County110.7Butte County: 75 per 100,000 peopleButte County75Lemhi County: 73.5 per 100,000 peopleLemhi County73.5Custer County: 67.5 per 100,000 peopleCuster County67.5Lincoln County: 56.7 per 100,000 peopleLincoln County56.7Owyhee County: 56.6 per 100,000 peopleOwyhee County56.6Elmore County: 55.2 per 100,000 peopleElmore County55.2Jerome County: 52.5 per 100,000 peopleJerome County52.5Oneida County: 43.4 per 100,000 peopleOneida County43.4Cassia County: 35.7 per 100,000 peopleCassia County35.7Idaho County: 35.2 per 100,000 peopleIdaho County35.2Bingham County: 32.7 per 100,000 peopleBingham County32.7Blaine County: 28.2 per 100,000 peopleBlaine County28.2Caribou County: 28.1 per 100,000 peopleCaribou County28.1Lewis County: 27.1 per 100,000 peopleLewis County27.1Gooding County: 25.3 per 100,000 peopleGooding County25.3Valley County: 24.5 per 100,000 peopleValley County24.5Clearwater County: 22.4 per 100,000 peopleClearwater County22.4Fremont County: 22.1 per 100,000 peopleFremont County22.1Adams County: 21.6 per 100,000 peopleAdams County21.6Nez Perce County: 21.2 per 100,000 peopleNez Perce County21.2Benewah County: 20.2 per 100,000 peopleBenewah County20.2Gem County: 20.2 per 100,000 peopleGem County20.2Payette County: 19 per 100,000 peoplePayette County19Bonner County: 18.1 per 100,000 peopleBonner County18.1Latah County: 17.3 per 100,000 peopleLatah County17.3Bonneville County: 16.4 per 100,000 peopleBonneville County16.4Bannock County: 14.7 per 100,000 peopleBannock County14.7Canyon County: 11.9 per 100,000 peopleCanyon County11.9Kootenai County: 11.1 per 100,000 peopleKootenai County11.1Washington County: 9.2 per 100,000 peopleWashington County9.2Minidoka County: 9.1 per 100,000 peopleMinidoka County9.1Teton County: 8.1 per 100,000 peopleTeton County8.1Boundary County: 7.9 per 100,000 peopleBoundary County7.9Madison County: 7.4 per 100,000 peopleMadison County7.4Jefferson County: 6.2 per 100,000 peopleJefferson County6.2Twin Falls County: 4.3 per 100,000 peopleTwin Falls County4.3Ada County: 4.1 per 100,000 peopleAda County4.1Bear Lake County: 0 per 100,000 peopleBear Lake County0Franklin County: 0 per 100,000 peopleFranklin County0Power County: 0 per 100,000 peoplePower County0Shoshone County: 0 per 100,000 peopleShoshone County0Camas County: 175.9 per 100,000 peopleCamas County175.9Clark County: 125.9 per 100,000 peopleClark County125.9Boise County: 110.7 per 100,000 peopleBoise County110.7Butte County: 75 per 100,000 peopleButte County75Lemhi County: 73.5 per 100,000 peopleLemhi County73.5Custer County: 67.5 per 100,000 peopleCuster County67.5Lincoln County: 56.7 per 100,000 peopleLincoln County56.7Owyhee County: 56.6 per 100,000 peopleOwyhee County56.6Elmore County: 55.2 per 100,000 peopleElmore County55.2Jerome County: 52.5 per 100,000 peopleJerome County52.5Oneida County: 43.4 per 100,000 peopleOneida County43.4Cassia County: 35.7 per 100,000 peopleCassia County35.7Idaho County: 35.2 per 100,000 peopleIdaho County35.2Bingham County: 32.7 per 100,000 peopleBingham County32.7Blaine County: 28.2 per 100,000 peopleBlaine County28.2Caribou County: 28.1 per 100,000 peopleCaribou County28.1Lewis County: 27.1 per 100,000 peopleLewis County27.1Gooding County: 25.3 per 100,000 peopleGooding County25.3Valley County: 24.5 per 100,000 peopleValley County24.5Clearwater County: 22.4 per 100,000 peopleClearwater County22.4Fremont County: 22.1 per 100,000 peopleFremont County22.1Adams County: 21.6 per 100,000 peopleAdams County21.6Nez Perce County: 21.2 per 100,000 peopleNez Perce County21.2Benewah County: 20.2 per 100,000 peopleBenewah County20.2Gem County: 20.2 per 100,000 peopleGem County20.2Payette County: 19 per 100,000 peoplePayette County19Bonner County: 18.1 per 100,000 peopleBonner County18.1Latah County: 17.3 per 100,000 peopleLatah County17.3Bonneville County: 16.4 per 100,000 peopleBonneville County16.4Bannock County: 14.7 per 100,000 peopleBannock County14.7Canyon County: 11.9 per 100,000 peopleCanyon County11.9Kootenai County: 11.1 per 100,000 peopleKootenai County11.1Washington County: 9.2 per 100,000 peopleWashington County9.2Minidoka County: 9.1 per 100,000 peopleMinidoka County9.1Teton County: 8.1 per 100,000 peopleTeton County8.1Boundary County: 7.9 per 100,000 peopleBoundary County7.9Madison County: 7.4 per 100,000 peopleMadison County7.4Jefferson County: 6.2 per 100,000 peopleJefferson County6.2Twin Falls County: 4.3 per 100,000 peopleTwin Falls County4.3Ada County: 4.1 per 100,000 peopleAda County4.1Bear Lake County: 0 per 100,000 peopleBear Lake County0Franklin County: 0 per 100,000 peopleFranklin County0Power County: 0 per 100,000 peoplePower County0Shoshone County: 0 per 100,000 peopleShoshone County0
per 100,000 people. Source: Invokely calculation with data from NHTSA, BEA. Retrieved 2026-10-12.

Full ranking

RankCounties2021
per 100,000 people		Change on 2020
1Camas County175.9+175.9 pts
2Clark County125.9-0.2 pts
3Boise County110.7+6.3 pts
4Butte County75-41.1 pts
5Lemhi County73.5+35.8 pts
6Custer County67.5+44.1 pts
7Lincoln County56.7-21.2 pts
8Owyhee County56.6+40 pts
9Elmore County55.2+27.3 pts
10Jerome County52.5+40.2 pts
11Oneida County43.4+21.5 pts
12Cassia County35.7+23.5 pts
13Idaho County35.2-1 pts
14Bingham County32.7+24.4 pts
15Blaine County28.2+20 pts
16Caribou County28.1+13.9 pts
17Lewis County27.1-1.3 pts
18Gooding County25.3-32.2 pts
19Valley County24.5-9.3 pts
20Clearwater County22.4+11 pts
21Fremont County22.1-45 pts
22Adams County21.6-46.2 pts
23Nez Perce County21.2+4.6 pts
24Benewah County20.2+20.2 pts
25Gem County20.2-0.6 pts
26Payette County19-4.5 pts
27Bonner County18.1+3.4 pts
28Latah County17.3+14.8 pts
29Bonneville County16.4+6 pts
30Bannock County14.7+4.4 pts
31Canyon County11.9+1.6 pts
32Kootenai County11.1+3.6 pts
33Washington County9.2-9.8 pts
34Minidoka County9.1+4.5 pts
35Teton County8.1-0.4 pts
36Boundary County7.9-33.3 pts
37Madison County7.4+3.6 pts
38Jefferson County6.2-0.2 pts
39Twin Falls County4.3-8.9 pts
40Ada County4.1+0.1 pts
41Bear Lake County0-31.4 pts
41Franklin County0-7 pts
41Power County0-25.4 pts
41Shoshone County0-22.7 pts

Other periods

About this ranking

Traffic fatalities (NHTSA FARS) per 100,000 residents in the same year and place.

Deaths are counted where the crash happened and divided by the resident population, so counties with busy highways and few residents can show very high rates. Differs from the WHO road traffic death rate (road_traffic_death_rate).

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

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.

Citation styles

Invokely calculated this figure from the publishers' data, so Invokely is the author and the publishers of the inputs are named.

APA 7

Invokely. (n.d.). NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents (Counties in Idaho by traffic fatality rate, 2021) [Data set]. Calculated from data by NHTSA and BEA. Retrieved October 12, 2026, from https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k

MLA 9

NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents, Counties in Idaho by traffic fatality rate, 2021. Calculated from data by NHTSA and BEA. Invokely, https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Accessed 12 Oct. 2026.

Chicago (author-date)

Invokely. n.d. NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. Counties in Idaho by traffic fatality rate, 2021. Dataset. Calculated from data by NHTSA and BEA. Accessed October 12, 2026. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k.

Harvard

Invokely (no date) NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents, Counties in Idaho by traffic fatality rate, 2021 [Dataset]. Calculated from data by NHTSA and BEA. Available at: https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k (Accessed: 12 October 2026).

BibTeX
@misc{invokely_counties_in_idaho_by_2021,
  author = {{Invokely}},
  title = {{NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in Idaho by traffic fatality rate, 2021}},
  howpublished = {Data set},
  url = {https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k},
  urldate = {2026-10-12},
  note = {Calculated from data by NHTSA and BEA. Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/idaho-counties?period=2021. Publisher attribution: 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.},
}
RIS
TY  - DATA
AU  - Invokely
TI  - NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in Idaho by traffic fatality rate, 2021
PB  - Invokely
DB  - Invokely
UR  - https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k
L2  - https://invokely.ai/rankings/traffic-fatality-rate/idaho-counties?period=2021
Y2  - 2026/10/12
N1  - Calculated from data by NHTSA and BEA.
N1  - Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/idaho-counties?period=2021.
N1  - Publisher attribution: 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.
ER  -
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Rank Counties in Idaho by traffic fatality rate using official data, and cite the source.
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Questions

Which county has the highest traffic fatality rate?

Camas County, with 175.9 per 100,000 people in 2021, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Shoshone County, with 0 per 100,000 people in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Invokely, NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. Retrieved 2026-10-12.

Traffic fatality rate: other rankings

Counties in Idaho: more rankings