Counties in Montana by traffic fatality rate

Madison County had the highest traffic fatality rate of 56 counties in 2018, at 95.8 per 100,000 people. Wibaux County had the lowest, at 0 per 100,000 people. The median was 20.6 per 100,000 people and the figure for Montana was 17 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Highest95.8Madison County
Median20.656 counties
Montana17History

Map of counties, 2018

Beaverhead County: 21.5 per 100,000 peopleBig Horn County: 90.3 per 100,000 peopleBlaine County: 14.1 per 100,000 peopleBroadwater County: 15.7 per 100,000 peopleCarbon County: 48.5 per 100,000 peopleCarter County: 0 per 100,000 peopleCascade County: 9.5 per 100,000 peopleChouteau County: 16.9 per 100,000 peopleCuster County: 0 per 100,000 peopleDaniels County: 58.3 per 100,000 peopleDawson County: 11.1 per 100,000 peopleDeer Lodge County: 10.7 per 100,000 peopleFallon County: 0 per 100,000 peopleFergus County: 61.6 per 100,000 peopleFlathead County: 9.9 per 100,000 peopleGallatin County: 7.9 per 100,000 peopleGarfield County: 84.7 per 100,000 peopleGlacier County: 21.6 per 100,000 peopleGolden Valley County: 0 per 100,000 peopleGranite County: 30 per 100,000 peopleHill County: 12.3 per 100,000 peopleJefferson County: 25.3 per 100,000 peopleJudith Basin County: 50.9 per 100,000 peopleLake County: 29.5 per 100,000 peopleLewis and Clark County: 10.1 per 100,000 peopleLiberty County: 0 per 100,000 peopleLincoln County: 31 per 100,000 peopleMcCone County: 58.4 per 100,000 peopleMadison County: 95.8 per 100,000 peopleMeagher County: 0 per 100,000 peopleMineral County: 69.3 per 100,000 peopleMissoula County: 6.9 per 100,000 peopleMusselshell County: 42.6 per 100,000 peoplePark County: 29.4 per 100,000 peoplePetroleum County: 0 per 100,000 peoplePhillips County: 23.3 per 100,000 peoplePondera County: 16.6 per 100,000 peoplePowder River County: 57.2 per 100,000 peoplePowell County: 0 per 100,000 peoplePrairie County: 0 per 100,000 peopleRavalli County: 16.3 per 100,000 peopleRichland County: 8.8 per 100,000 peopleRoosevelt County: 27.4 per 100,000 peopleRosebud County: 81.3 per 100,000 peopleSanders County: 41.7 per 100,000 peopleSheridan County: 27.7 per 100,000 peopleSilver Bow County: 5.7 per 100,000 peopleStillwater County: 22.8 per 100,000 peopleSweet Grass County: 27 per 100,000 peopleTeton County: 32.6 per 100,000 peopleToole County: 19.7 per 100,000 peopleTreasure County: 0 per 100,000 peopleValley County: 26.3 per 100,000 peopleWheatland County: 47.5 per 100,000 peopleWibaux County: 0 per 100,000 peopleYellowstone County: 14.8 per 100,000 people
  • Under 11
  • 11 to 21
  • 21 to 29
  • 29 to 51
  • 51 and over
per 100,000 people, 2018. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

Madison County: 95.8 per 100,000 peopleMadison County95.8Big Horn County: 90.3 per 100,000 peopleBig Horn County90.3Garfield County: 84.7 per 100,000 peopleGarfield County84.7Rosebud County: 81.3 per 100,000 peopleRosebud County81.3Mineral County: 69.3 per 100,000 peopleMineral County69.3Fergus County: 61.6 per 100,000 peopleFergus County61.6McCone County: 58.4 per 100,000 peopleMcCone County58.4Daniels County: 58.3 per 100,000 peopleDaniels County58.3Powder River County: 57.2 per 100,000 peoplePowder River County57.2Judith Basin County: 50.9 per 100,000 peopleJudith Basin County50.9Carbon County: 48.5 per 100,000 peopleCarbon County48.5Wheatland County: 47.5 per 100,000 peopleWheatland County47.5Musselshell County: 42.6 per 100,000 peopleMusselshell County42.6Sanders County: 41.7 per 100,000 peopleSanders County41.7Teton County: 32.6 per 100,000 peopleTeton County32.6Lincoln County: 31 per 100,000 peopleLincoln County31Granite County: 30 per 100,000 peopleGranite County30Lake County: 29.5 per 100,000 peopleLake County29.5Park County: 29.4 per 100,000 peoplePark County29.4Sheridan County: 27.7 per 100,000 peopleSheridan County27.7Roosevelt County: 27.4 per 100,000 peopleRoosevelt County27.4Sweet Grass County: 27 per 100,000 peopleSweet Grass County27Valley County: 26.3 per 100,000 peopleValley County26.3Jefferson County: 25.3 per 100,000 peopleJefferson County25.3Phillips County: 23.3 per 100,000 peoplePhillips County23.3Stillwater County: 22.8 per 100,000 peopleStillwater County22.8Glacier County: 21.6 per 100,000 peopleGlacier County21.6Beaverhead County: 21.5 per 100,000 peopleBeaverhead County21.5Toole County: 19.7 per 100,000 peopleToole County19.7Chouteau County: 16.9 per 100,000 peopleChouteau County16.9Pondera County: 16.6 per 100,000 peoplePondera County16.6Ravalli County: 16.3 per 100,000 peopleRavalli County16.3Broadwater County: 15.7 per 100,000 peopleBroadwater County15.7Yellowstone County: 14.8 per 100,000 peopleYellowstone County14.8Blaine County: 14.1 per 100,000 peopleBlaine County14.1Hill County: 12.3 per 100,000 peopleHill County12.3Dawson County: 11.1 per 100,000 peopleDawson County11.1Deer Lodge County: 10.7 per 100,000 peopleDeer Lodge County10.7Lewis and Clark County: 10.1 per 100,000 peopleLewis and Clark County10.1Flathead County: 9.9 per 100,000 peopleFlathead County9.9Cascade County: 9.5 per 100,000 peopleCascade County9.5Richland County: 8.8 per 100,000 peopleRichland County8.8Gallatin County: 7.9 per 100,000 peopleGallatin County7.9Missoula County: 6.9 per 100,000 peopleMissoula County6.9Silver Bow County: 5.7 per 100,000 peopleSilver Bow County5.7Carter County: 0 per 100,000 peopleCarter County0Custer County: 0 per 100,000 peopleCuster County0Fallon County: 0 per 100,000 peopleFallon County0Golden Valley County: 0 per 100,000 peopleGolden Valley County0Liberty County: 0 per 100,000 peopleLiberty County0Meagher County: 0 per 100,000 peopleMeagher County0Petroleum County: 0 per 100,000 peoplePetroleum County0Powell County: 0 per 100,000 peoplePowell County0Prairie County: 0 per 100,000 peoplePrairie County0Treasure County: 0 per 100,000 peopleTreasure County0Wibaux County: 0 per 100,000 peopleWibaux County0Madison County: 95.8 per 100,000 peopleMadison County95.8Big Horn County: 90.3 per 100,000 peopleBig Horn County90.3Garfield County: 84.7 per 100,000 peopleGarfield County84.7Rosebud County: 81.3 per 100,000 peopleRosebud County81.3Mineral County: 69.3 per 100,000 peopleMineral County69.3Fergus County: 61.6 per 100,000 peopleFergus County61.6McCone County: 58.4 per 100,000 peopleMcCone County58.4Daniels County: 58.3 per 100,000 peopleDaniels County58.3Powder River County: 57.2 per 100,000 peoplePowder River County57.2Judith Basin County: 50.9 per 100,000 peopleJudith Basin County50.9Carbon County: 48.5 per 100,000 peopleCarbon County48.5Wheatland County: 47.5 per 100,000 peopleWheatland County47.5Musselshell County: 42.6 per 100,000 peopleMusselshell County42.6Sanders County: 41.7 per 100,000 peopleSanders County41.7Teton County: 32.6 per 100,000 peopleTeton County32.6Lincoln County: 31 per 100,000 peopleLincoln County31Granite County: 30 per 100,000 peopleGranite County30Lake County: 29.5 per 100,000 peopleLake County29.5Park County: 29.4 per 100,000 peoplePark County29.4Sheridan County: 27.7 per 100,000 peopleSheridan County27.7Roosevelt County: 27.4 per 100,000 peopleRoosevelt County27.4Sweet Grass County: 27 per 100,000 peopleSweet Grass County27Valley County: 26.3 per 100,000 peopleValley County26.3Jefferson County: 25.3 per 100,000 peopleJefferson County25.3Phillips County: 23.3 per 100,000 peoplePhillips County23.3Stillwater County: 22.8 per 100,000 peopleStillwater County22.8Glacier County: 21.6 per 100,000 peopleGlacier County21.6Beaverhead County: 21.5 per 100,000 peopleBeaverhead County21.5Toole County: 19.7 per 100,000 peopleToole County19.7Chouteau County: 16.9 per 100,000 peopleChouteau County16.9Pondera County: 16.6 per 100,000 peoplePondera County16.6Ravalli County: 16.3 per 100,000 peopleRavalli County16.3Broadwater County: 15.7 per 100,000 peopleBroadwater County15.7Yellowstone County: 14.8 per 100,000 peopleYellowstone County14.8Blaine County: 14.1 per 100,000 peopleBlaine County14.1Hill County: 12.3 per 100,000 peopleHill County12.3Dawson County: 11.1 per 100,000 peopleDawson County11.1Deer Lodge County: 10.7 per 100,000 peopleDeer Lodge County10.7Lewis and Clark County: 10.1 per 100,000 peopleLewis and Clark County10.1Flathead County: 9.9 per 100,000 peopleFlathead County9.9Cascade County: 9.5 per 100,000 peopleCascade County9.5Richland County: 8.8 per 100,000 peopleRichland County8.8Gallatin County: 7.9 per 100,000 peopleGallatin County7.9Missoula County: 6.9 per 100,000 peopleMissoula County6.9Silver Bow County: 5.7 per 100,000 peopleSilver Bow County5.7Carter County: 0 per 100,000 peopleCarter County0Custer County: 0 per 100,000 peopleCuster County0Fallon County: 0 per 100,000 peopleFallon County0Golden Valley County: 0 per 100,000 peopleGolden Valley County0Liberty County: 0 per 100,000 peopleLiberty County0Meagher County: 0 per 100,000 peopleMeagher County0Petroleum County: 0 per 100,000 peoplePetroleum County0Powell County: 0 per 100,000 peoplePowell 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

RankCounties2018
per 100,000 people
Change on 2017
1Madison County95.8+46.2 pts
2Big Horn County90.3-6.4 pts
3Garfield County84.7+1.8 pts
4Rosebud County81.3+47.3 pts
5Mineral County69.3+22.3 pts
6Fergus County61.6+52.9 pts
7McCone County58.4+58.4 pts
8Daniels County58.3+58.3 pts
9Powder River County57.2+0.6 pts
10Judith Basin County50.9+50.9 pts
11Carbon County48.5+29.2 pts
12Wheatland County47.5+47.5 pts
13Musselshell County42.6+42.6 pts
14Sanders County41.7+16.5 pts
15Teton County32.6+32.6 pts
16Lincoln County31+20.6 pts
17Granite County30-30.2 pts
18Lake County29.5-0.1 pts
19Park County29.4+11.4 pts
20Sheridan County27.7+0.4 pts
21Roosevelt County27.4+0.2 pts
22Sweet Grass County27-0.2 pts
23Valley County26.3-26.4 pts
24Jefferson County25.3-0.3 pts
25Phillips County23.3-22.9 pts
26Stillwater County22.8-0 pts
27Glacier County21.6-29.1 pts
28Beaverhead County21.5-10.6 pts
29Toole County19.7+19.7 pts
30Chouteau County16.9-51.2 pts
31Pondera County16.6+16.6 pts
32Ravalli County16.3+14 pts
33Broadwater County15.7-81.2 pts
34Yellowstone County14.8+7.4 pts
35Blaine County14.1+14.1 pts
36Hill County12.3-24.3 pts
37Dawson County11.1-32.2 pts
38Deer Lodge County10.7-10.9 pts
39Lewis and Clark County10.1-6 pts
40Flathead County9.9-5.2 pts
41Cascade County9.5+2.3 pts
42Richland County8.8-8.7 pts
43Gallatin County7.9-0.2 pts
44Missoula County6.9-7.8 pts
45Silver Bow County5.7-8.6 pts
46Carter County00 pts
46Custer County00 pts
46Fallon County00 pts
46Golden Valley County00 pts
46Liberty County0-47.4 pts
46Meagher County0-52 pts
46Petroleum County00 pts
46Powell County0-87.3 pts
46Prairie County0-180 pts
46Treasure County0-562.6 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, 2018) [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, 2018. 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, 2018. 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, 2018 [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_2018,
  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, 2018}},
  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=2018. 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, 2018
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=2018
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=2018.
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?

Madison County, with 95.8 per 100,000 people in 2018, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Wibaux County, with 0 per 100,000 people in 2018.

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