Data / Rankings / Traffic fatality rate / Counties in Idaho

Counties in Idaho by traffic fatality rate

Boise County had the highest traffic fatality rate of 44 counties in 2023, at 81.8 per 100,000 people. Oneida County had the lowest, at 0 per 100,000 people. The median was 20.1 per 100,000 people and the figure for Idaho was 14 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Highest81.8Boise County
Lowest0Oneida County
Median20.144 counties
Idaho14History

Map of counties, 2023

Ada County: 5.9 per 100,000 peopleAdams County: 20.4 per 100,000 peopleBannock County: 8.8 per 100,000 peopleBear Lake County: 44.2 per 100,000 peopleBenewah County: 28.8 per 100,000 peopleBingham County: 17.9 per 100,000 peopleBlaine County: 19.9 per 100,000 peopleBoise County: 81.8 per 100,000 peopleBonner County: 13.3 per 100,000 peopleBonneville County: 13.7 per 100,000 peopleBoundary County: 7.3 per 100,000 peopleButte County: 72.8 per 100,000 peopleCamas County: 0 per 100,000 peopleCanyon County: 11.6 per 100,000 peopleCaribou County: 27.7 per 100,000 peopleCassia County: 31 per 100,000 peopleClark County: 0 per 100,000 peopleClearwater County: 43.5 per 100,000 peopleCuster County: 22.1 per 100,000 peopleElmore County: 37 per 100,000 peopleFranklin County: 6.4 per 100,000 peopleFremont County: 28.1 per 100,000 peopleGem County: 18.7 per 100,000 peopleGooding County: 24.8 per 100,000 peopleIdaho County: 44.6 per 100,000 peopleJefferson County: 23.4 per 100,000 peopleJerome County: 70.4 per 100,000 peopleKootenai County: 10.3 per 100,000 peopleLatah County: 4.8 per 100,000 peopleLemhi County: 35.5 per 100,000 peopleLewis County: 0 per 100,000 peopleLincoln County: 36.7 per 100,000 peopleMadison County: 3.6 per 100,000 peopleMinidoka County: 22.2 per 100,000 peopleNez Perce County: 16.3 per 100,000 peopleOneida County: 0 per 100,000 peopleOwyhee County: 15.7 per 100,000 peoplePayette County: 33 per 100,000 peoplePower County: 12 per 100,000 peopleShoshone County: 14.2 per 100,000 peopleTeton County: 39.6 per 100,000 peopleTwin Falls County: 12.6 per 100,000 peopleValley County: 23.8 per 100,000 peopleWashington County: 26.1 per 100,000 people
  • Under 6.6
  • 6.6 to 13
  • 13 to 20
  • 20 to 27
  • 27 to 37
  • 37 and over
per 100,000 people, 2023. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Boise County: 81.8 per 100,000 peopleBoise County81.8Butte County: 72.8 per 100,000 peopleButte County72.8Jerome County: 70.4 per 100,000 peopleJerome County70.4Idaho County: 44.6 per 100,000 peopleIdaho County44.6Bear Lake County: 44.2 per 100,000 peopleBear Lake County44.2Clearwater County: 43.5 per 100,000 peopleClearwater County43.5Teton County: 39.6 per 100,000 peopleTeton County39.6Elmore County: 37 per 100,000 peopleElmore County37Lincoln County: 36.7 per 100,000 peopleLincoln County36.7Lemhi County: 35.5 per 100,000 peopleLemhi County35.5Payette County: 33 per 100,000 peoplePayette County33Cassia County: 31 per 100,000 peopleCassia County31Benewah County: 28.8 per 100,000 peopleBenewah County28.8Fremont County: 28.1 per 100,000 peopleFremont County28.1Caribou County: 27.7 per 100,000 peopleCaribou County27.7Washington County: 26.1 per 100,000 peopleWashington County26.1Gooding County: 24.8 per 100,000 peopleGooding County24.8Valley County: 23.8 per 100,000 peopleValley County23.8Jefferson County: 23.4 per 100,000 peopleJefferson County23.4Minidoka County: 22.2 per 100,000 peopleMinidoka County22.2Custer County: 22.1 per 100,000 peopleCuster County22.1Adams County: 20.4 per 100,000 peopleAdams County20.4Blaine County: 19.9 per 100,000 peopleBlaine County19.9Gem County: 18.7 per 100,000 peopleGem County18.7Bingham County: 17.9 per 100,000 peopleBingham County17.9Nez Perce County: 16.3 per 100,000 peopleNez Perce County16.3Owyhee County: 15.7 per 100,000 peopleOwyhee County15.7Shoshone County: 14.2 per 100,000 peopleShoshone County14.2Bonneville County: 13.7 per 100,000 peopleBonneville County13.7Bonner County: 13.3 per 100,000 peopleBonner County13.3Twin Falls County: 12.6 per 100,000 peopleTwin Falls County12.6Power County: 12 per 100,000 peoplePower County12Canyon County: 11.6 per 100,000 peopleCanyon County11.6Kootenai County: 10.3 per 100,000 peopleKootenai County10.3Bannock County: 8.8 per 100,000 peopleBannock County8.8Boundary County: 7.3 per 100,000 peopleBoundary County7.3Franklin County: 6.4 per 100,000 peopleFranklin County6.4Ada County: 5.9 per 100,000 peopleAda County5.9Latah County: 4.8 per 100,000 peopleLatah County4.8Madison County: 3.6 per 100,000 peopleMadison County3.6Camas County: 0 per 100,000 peopleCamas County0Clark County: 0 per 100,000 peopleClark County0Lewis County: 0 per 100,000 peopleLewis County0Oneida County: 0 per 100,000 peopleOneida County0Boise County: 81.8 per 100,000 peopleBoise County81.8Butte County: 72.8 per 100,000 peopleButte County72.8Jerome County: 70.4 per 100,000 peopleJerome County70.4Idaho County: 44.6 per 100,000 peopleIdaho County44.6Bear Lake County: 44.2 per 100,000 peopleBear Lake County44.2Clearwater County: 43.5 per 100,000 peopleClearwater County43.5Teton County: 39.6 per 100,000 peopleTeton County39.6Elmore County: 37 per 100,000 peopleElmore County37Lincoln County: 36.7 per 100,000 peopleLincoln County36.7Lemhi County: 35.5 per 100,000 peopleLemhi County35.5Payette County: 33 per 100,000 peoplePayette County33Cassia County: 31 per 100,000 peopleCassia County31Benewah County: 28.8 per 100,000 peopleBenewah County28.8Fremont County: 28.1 per 100,000 peopleFremont County28.1Caribou County: 27.7 per 100,000 peopleCaribou County27.7Washington County: 26.1 per 100,000 peopleWashington County26.1Gooding County: 24.8 per 100,000 peopleGooding County24.8Valley County: 23.8 per 100,000 peopleValley County23.8Jefferson County: 23.4 per 100,000 peopleJefferson County23.4Minidoka County: 22.2 per 100,000 peopleMinidoka County22.2Custer County: 22.1 per 100,000 peopleCuster County22.1Adams County: 20.4 per 100,000 peopleAdams County20.4Blaine County: 19.9 per 100,000 peopleBlaine County19.9Gem County: 18.7 per 100,000 peopleGem County18.7Bingham County: 17.9 per 100,000 peopleBingham County17.9Nez Perce County: 16.3 per 100,000 peopleNez Perce County16.3Owyhee County: 15.7 per 100,000 peopleOwyhee County15.7Shoshone County: 14.2 per 100,000 peopleShoshone County14.2Bonneville County: 13.7 per 100,000 peopleBonneville County13.7Bonner County: 13.3 per 100,000 peopleBonner County13.3Twin Falls County: 12.6 per 100,000 peopleTwin Falls County12.6Power County: 12 per 100,000 peoplePower County12Canyon County: 11.6 per 100,000 peopleCanyon County11.6Kootenai County: 10.3 per 100,000 peopleKootenai County10.3Bannock County: 8.8 per 100,000 peopleBannock County8.8Boundary County: 7.3 per 100,000 peopleBoundary County7.3Franklin County: 6.4 per 100,000 peopleFranklin County6.4Ada County: 5.9 per 100,000 peopleAda County5.9Latah County: 4.8 per 100,000 peopleLatah County4.8Madison County: 3.6 per 100,000 peopleMadison County3.6Camas County: 0 per 100,000 peopleCamas County0Clark County: 0 per 100,000 peopleClark County0Lewis County: 0 per 100,000 peopleLewis County0Oneida County: 0 per 100,000 peopleOneida County0
per 100,000 people. Source: Invokely calculation with data from NHTSA, BEA. Retrieved 2026-10-12.

Full ranking

RankCounties2023
per 100,000 people		Change on 2022
1Boise County81.8+22.4 pts
2Butte County72.8-1.5 pts
3Jerome County70.4+46.6 pts
4Idaho County44.6-6.3 pts
5Bear Lake County44.2+44.2 pts
6Clearwater County43.5+43.5 pts
7Teton County39.6+15.7 pts
8Elmore County37+9.9 pts
9Lincoln County36.7+18.1 pts
10Lemhi County35.5+23.4 pts
11Payette County33+25.6 pts
12Cassia County31-0.2 pts
13Benewah County28.8+9.4 pts
14Fremont County28.1-0.4 pts
15Caribou County27.7+13.8 pts
16Washington County26.1+17.1 pts
17Gooding County24.8+12.2 pts
18Valley County23.8-8.4 pts
19Jefferson County23.4+8.4 pts
20Minidoka County22.2-0.3 pts
21Custer County22.1-0.1 pts
22Adams County20.4+20.4 pts
23Blaine County19.9+7.9 pts
24Gem County18.7-5.4 pts
25Bingham County17.9-6.1 pts
26Nez Perce County16.3-11.6 pts
27Owyhee County15.7-16 pts
28Shoshone County14.2-0.1 pts
29Bonneville County13.7+6 pts
30Bonner County13.3-12 pts
31Twin Falls County12.6-3.4 pts
32Power County12-12.6 pts
33Canyon County11.6+5.2 pts
34Kootenai County10.3+3.7 pts
35Bannock County8.8-4.5 pts
36Boundary County7.3-0.2 pts
37Franklin County6.4-0.1 pts
38Ada County5.9+1.9 pts
39Latah County4.8+4.8 pts
40Madison County3.60 pts
41Camas County00 pts
41Clark County0-123.2 pts
41Lewis County0-26.8 pts
41Oneida County00 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, 2023) [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, 2023. 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, 2023. 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, 2023 [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_2023,
  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, 2023}},
  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=2023. 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, 2023
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=2023
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=2023.
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.
rank_places {"indicator":"traffic_fatality_rate_per_100k","level":"province","within":"Idaho","limit":10}
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Questions

Which county has the highest traffic fatality rate?

Boise County, with 81.8 per 100,000 people in 2023, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Oneida County, with 0 per 100,000 people in 2023.

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