Counties in Montana by traffic fatality rate

Judith Basin County had the highest traffic fatality rate of 56 counties in 2015, at 257.5 per 100,000 people. Wibaux County had the lowest, at 0 per 100,000 people. The median was 26.4 per 100,000 people and the figure for Montana was 21.7 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Median26.456 counties
Montana21.7History

Map of counties, 2015

Beaverhead County: 21.7 per 100,000 peopleBig Horn County: 82.7 per 100,000 peopleBlaine County: 57.9 per 100,000 peopleBroadwater County: 33.8 per 100,000 peopleCarbon County: 88.4 per 100,000 peopleCarter County: 161.9 per 100,000 peopleCascade County: 10.8 per 100,000 peopleChouteau County: 153.2 per 100,000 peopleCuster County: 24.3 per 100,000 peopleDaniels County: 0 per 100,000 peopleDawson County: 30.7 per 100,000 peopleDeer Lodge County: 43.4 per 100,000 peopleFallon County: 0 per 100,000 peopleFergus County: 26.1 per 100,000 peopleFlathead County: 12.6 per 100,000 peopleGallatin County: 9.8 per 100,000 peopleGarfield County: 81.2 per 100,000 peopleGlacier County: 43.7 per 100,000 peopleGolden Valley County: 0 per 100,000 peopleGranite County: 31.8 per 100,000 peopleHill County: 42.7 per 100,000 peopleJefferson County: 35 per 100,000 peopleJudith Basin County: 257.5 per 100,000 peopleLake County: 20.3 per 100,000 peopleLewis and Clark County: 22.5 per 100,000 peopleLiberty County: 0 per 100,000 peopleLincoln County: 26.6 per 100,000 peopleMcCone County: 0 per 100,000 peopleMadison County: 76.1 per 100,000 peopleMeagher County: 0 per 100,000 peopleMineral County: 71.4 per 100,000 peopleMissoula County: 13.3 per 100,000 peopleMusselshell County: 42.8 per 100,000 peoplePark County: 24.6 per 100,000 peoplePetroleum County: 0 per 100,000 peoplePhillips County: 46.4 per 100,000 peoplePondera County: 0 per 100,000 peoplePowder River County: 56.1 per 100,000 peoplePowell County: 29.2 per 100,000 peoplePrairie County: 0 per 100,000 peopleRavalli County: 7.3 per 100,000 peopleRichland County: 8.2 per 100,000 peopleRoosevelt County: 53 per 100,000 peopleRosebud County: 44.1 per 100,000 peopleSanders County: 43.6 per 100,000 peopleSheridan County: 26.2 per 100,000 peopleSilver Bow County: 17.3 per 100,000 peopleStillwater County: 22.3 per 100,000 peopleSweet Grass County: 27.6 per 100,000 peopleTeton County: 65.9 per 100,000 peopleToole County: 19.1 per 100,000 peopleTreasure County: 0 per 100,000 peopleValley County: 51.6 per 100,000 peopleWheatland County: 48.2 per 100,000 peopleWibaux County: 0 per 100,000 peopleYellowstone County: 10.8 per 100,000 people
  • Under 18
  • 18 to 26
  • 26 to 43
  • 43 to 58
  • 58 and over
per 100,000 people, 2015. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2015

Judith Basin County: 257.5 per 100,000 peopleJudith Basin County257.5Carter County: 161.9 per 100,000 peopleCarter County161.9Chouteau County: 153.2 per 100,000 peopleChouteau County153.2Carbon County: 88.4 per 100,000 peopleCarbon County88.4Big Horn County: 82.7 per 100,000 peopleBig Horn County82.7Garfield County: 81.2 per 100,000 peopleGarfield County81.2Madison County: 76.1 per 100,000 peopleMadison County76.1Mineral County: 71.4 per 100,000 peopleMineral County71.4Teton County: 65.9 per 100,000 peopleTeton County65.9Blaine County: 57.9 per 100,000 peopleBlaine County57.9Powder River County: 56.1 per 100,000 peoplePowder River County56.1Roosevelt County: 53 per 100,000 peopleRoosevelt County53Valley County: 51.6 per 100,000 peopleValley County51.6Wheatland County: 48.2 per 100,000 peopleWheatland County48.2Phillips County: 46.4 per 100,000 peoplePhillips County46.4Rosebud County: 44.1 per 100,000 peopleRosebud County44.1Glacier County: 43.7 per 100,000 peopleGlacier County43.7Sanders County: 43.6 per 100,000 peopleSanders County43.6Deer Lodge County: 43.4 per 100,000 peopleDeer Lodge County43.4Musselshell County: 42.8 per 100,000 peopleMusselshell County42.8Hill County: 42.7 per 100,000 peopleHill County42.7Jefferson County: 35 per 100,000 peopleJefferson County35Broadwater County: 33.8 per 100,000 peopleBroadwater County33.8Granite County: 31.8 per 100,000 peopleGranite County31.8Dawson County: 30.7 per 100,000 peopleDawson County30.7Powell County: 29.2 per 100,000 peoplePowell County29.2Sweet Grass County: 27.6 per 100,000 peopleSweet Grass County27.6Lincoln County: 26.6 per 100,000 peopleLincoln County26.6Sheridan County: 26.2 per 100,000 peopleSheridan County26.2Fergus County: 26.1 per 100,000 peopleFergus County26.1Park County: 24.6 per 100,000 peoplePark County24.6Custer County: 24.3 per 100,000 peopleCuster County24.3Lewis and Clark County: 22.5 per 100,000 peopleLewis and Clark County22.5Stillwater County: 22.3 per 100,000 peopleStillwater County22.3Beaverhead County: 21.7 per 100,000 peopleBeaverhead County21.7Lake County: 20.3 per 100,000 peopleLake County20.3Toole County: 19.1 per 100,000 peopleToole County19.1Silver Bow County: 17.3 per 100,000 peopleSilver Bow County17.3Missoula County: 13.3 per 100,000 peopleMissoula County13.3Flathead County: 12.6 per 100,000 peopleFlathead County12.6Cascade County: 10.8 per 100,000 peopleCascade County10.8Yellowstone County: 10.8 per 100,000 peopleYellowstone County10.8Gallatin County: 9.8 per 100,000 peopleGallatin County9.8Richland County: 8.2 per 100,000 peopleRichland County8.2Ravalli County: 7.3 per 100,000 peopleRavalli County7.3Daniels County: 0 per 100,000 peopleDaniels County0Fallon County: 0 per 100,000 peopleFallon County0Golden Valley County: 0 per 100,000 peopleGolden Valley County0Liberty County: 0 per 100,000 peopleLiberty County0McCone County: 0 per 100,000 peopleMcCone County0Meagher County: 0 per 100,000 peopleMeagher County0Petroleum County: 0 per 100,000 peoplePetroleum County0Pondera County: 0 per 100,000 peoplePondera County0Prairie County: 0 per 100,000 peoplePrairie County0Treasure County: 0 per 100,000 peopleTreasure County0Wibaux County: 0 per 100,000 peopleWibaux County0Judith Basin County: 257.5 per 100,000 peopleJudith Basin County257.5Carter County: 161.9 per 100,000 peopleCarter County161.9Chouteau County: 153.2 per 100,000 peopleChouteau County153.2Carbon County: 88.4 per 100,000 peopleCarbon County88.4Big Horn County: 82.7 per 100,000 peopleBig Horn County82.7Garfield County: 81.2 per 100,000 peopleGarfield County81.2Madison County: 76.1 per 100,000 peopleMadison County76.1Mineral County: 71.4 per 100,000 peopleMineral County71.4Teton County: 65.9 per 100,000 peopleTeton County65.9Blaine County: 57.9 per 100,000 peopleBlaine County57.9Powder River County: 56.1 per 100,000 peoplePowder River County56.1Roosevelt County: 53 per 100,000 peopleRoosevelt County53Valley County: 51.6 per 100,000 peopleValley County51.6Wheatland County: 48.2 per 100,000 peopleWheatland County48.2Phillips County: 46.4 per 100,000 peoplePhillips County46.4Rosebud County: 44.1 per 100,000 peopleRosebud County44.1Glacier County: 43.7 per 100,000 peopleGlacier County43.7Sanders County: 43.6 per 100,000 peopleSanders County43.6Deer Lodge County: 43.4 per 100,000 peopleDeer Lodge County43.4Musselshell County: 42.8 per 100,000 peopleMusselshell County42.8Hill County: 42.7 per 100,000 peopleHill County42.7Jefferson County: 35 per 100,000 peopleJefferson County35Broadwater County: 33.8 per 100,000 peopleBroadwater County33.8Granite County: 31.8 per 100,000 peopleGranite County31.8Dawson County: 30.7 per 100,000 peopleDawson County30.7Powell County: 29.2 per 100,000 peoplePowell County29.2Sweet Grass County: 27.6 per 100,000 peopleSweet Grass County27.6Lincoln County: 26.6 per 100,000 peopleLincoln County26.6Sheridan County: 26.2 per 100,000 peopleSheridan County26.2Fergus County: 26.1 per 100,000 peopleFergus County26.1Park County: 24.6 per 100,000 peoplePark County24.6Custer County: 24.3 per 100,000 peopleCuster County24.3Lewis and Clark County: 22.5 per 100,000 peopleLewis and Clark County22.5Stillwater County: 22.3 per 100,000 peopleStillwater County22.3Beaverhead County: 21.7 per 100,000 peopleBeaverhead County21.7Lake County: 20.3 per 100,000 peopleLake County20.3Toole County: 19.1 per 100,000 peopleToole County19.1Silver Bow County: 17.3 per 100,000 peopleSilver Bow County17.3Missoula County: 13.3 per 100,000 peopleMissoula County13.3Flathead County: 12.6 per 100,000 peopleFlathead County12.6Cascade County: 10.8 per 100,000 peopleCascade County10.8Yellowstone County: 10.8 per 100,000 peopleYellowstone County10.8Gallatin County: 9.8 per 100,000 peopleGallatin County9.8Richland County: 8.2 per 100,000 peopleRichland County8.2Ravalli County: 7.3 per 100,000 peopleRavalli County7.3Daniels County: 0 per 100,000 peopleDaniels County0Fallon County: 0 per 100,000 peopleFallon County0Golden Valley County: 0 per 100,000 peopleGolden Valley County0Liberty County: 0 per 100,000 peopleLiberty County0McCone County: 0 per 100,000 peopleMcCone County0Meagher County: 0 per 100,000 peopleMeagher County0Petroleum County: 0 per 100,000 peoplePetroleum County0Pondera County: 0 per 100,000 peoplePondera County0Prairie County: 0 per 100,000 peoplePrairie County0Treasure County: 0 per 100,000 peopleTreasure County0Wibaux County: 0 per 100,000 peopleWibaux County0
per 100,000 people. Source: Invokely calculation with data from NHTSA, BEA. Retrieved 2026-10-12.

Full ranking

RankCounties2015
per 100,000 people
Change on 2014
1Judith Basin County257.5+157.1 pts
2Carter County161.9+80 pts
3Chouteau County153.2+119.7 pts
4Carbon County88.4+68.9 pts
5Big Horn County82.7+15.2 pts
6Garfield County81.2+0.1 pts
7Madison County76.1+24.2 pts
8Mineral County71.4+47.6 pts
9Teton County65.9+16.2 pts
10Blaine County57.9+14.4 pts
11Powder River County56.1+0.2 pts
12Roosevelt County53+8.4 pts
13Valley County51.6+12.8 pts
14Wheatland County48.2+48.2 pts
15Phillips County46.4-0.1 pts
16Rosebud County44.1+0.1 pts
17Glacier County43.7-7.1 pts
18Sanders County43.6-8.8 pts
19Deer Lodge County43.4+32.5 pts
20Musselshell County42.8+21.4 pts
21Hill County42.7+30.6 pts
22Jefferson County35-52.8 pts
23Broadwater County33.8-17.8 pts
24Granite County31.8-0.1 pts
25Dawson County30.7+30.7 pts
26Powell County29.2-14.1 pts
27Sweet Grass County27.6+0.1 pts
28Lincoln County26.6+10.8 pts
29Sheridan County26.2-53.2 pts
30Fergus County26.1+17.4 pts
31Park County24.6-0.2 pts
32Custer County24.3+24.3 pts
33Lewis and Clark County22.5+13.4 pts
34Stillwater County22.3+22.3 pts
35Beaverhead County21.7+21.7 pts
36Lake County20.3-0.2 pts
37Toole County19.1+19.1 pts
38Silver Bow County17.3-2.8 pts
39Missoula County13.3-0.1 pts
40Flathead County12.6-1.2 pts
41Cascade County10.8-7.2 pts
41Yellowstone County10.8-0.7 pts
43Gallatin County9.8+0.6 pts
44Richland County8.2-17.3 pts
45Ravalli County7.3-5 pts
46Daniels County0-55.5 pts
46Fallon County00 pts
46Golden Valley County00 pts
46Liberty County00 pts
46McCone County0-57.4 pts
46Meagher County0-52.7 pts
46Petroleum County0-204.5 pts
46Pondera County00 pts
46Prairie County00 pts
46Treasure County0-282.1 pts
46Wibaux 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 Montana by traffic fatality rate, 2015) [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 Montana by traffic fatality rate, 2015. 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 Montana by traffic fatality rate, 2015. 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 Montana by traffic fatality rate, 2015 [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_montana_by_2015,
  author = {{Invokely}},
  title = {{NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in Montana by traffic fatality rate, 2015}},
  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/montana-counties?period=2015. 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 Montana by traffic fatality rate, 2015
PB  - Invokely
DB  - Invokely
UR  - https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k
L2  - https://invokely.ai/rankings/traffic-fatality-rate/montana-counties?period=2015
Y2  - 2026/10/12
N1  - Calculated from data by NHTSA and BEA.
N1  - Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/montana-counties?period=2015.
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 Montana by traffic fatality rate using official data, and cite the source.
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Questions

Which county has the highest traffic fatality rate?

Judith Basin County, with 257.5 per 100,000 people in 2015, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Wibaux County, with 0 per 100,000 people in 2015.

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 Montana: more rankings