Counties in Montana by traffic fatality rate

Treasure County had the highest traffic fatality rate of 56 counties in 2017, at 562.6 per 100,000 people. Wibaux County had the lowest, at 0 per 100,000 people. The median was 20.4 per 100,000 people and the figure for Montana was 17.6 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Highest562.6Treasure County
Median20.456 counties
Montana17.6History

Map of counties, 2017

Beaverhead County: 32.1 per 100,000 peopleBig Horn County: 96.7 per 100,000 peopleBlaine County: 0 per 100,000 peopleBroadwater County: 96.9 per 100,000 peopleCarbon County: 19.3 per 100,000 peopleCarter County: 0 per 100,000 peopleCascade County: 7.2 per 100,000 peopleChouteau County: 68.1 per 100,000 peopleCuster County: 0 per 100,000 peopleDaniels County: 0 per 100,000 peopleDawson County: 43.4 per 100,000 peopleDeer Lodge County: 21.6 per 100,000 peopleFallon County: 0 per 100,000 peopleFergus County: 8.7 per 100,000 peopleFlathead County: 15.1 per 100,000 peopleGallatin County: 8.1 per 100,000 peopleGarfield County: 82.9 per 100,000 peopleGlacier County: 50.6 per 100,000 peopleGolden Valley County: 0 per 100,000 peopleGranite County: 60.2 per 100,000 peopleHill County: 36.6 per 100,000 peopleJefferson County: 25.6 per 100,000 peopleJudith Basin County: 0 per 100,000 peopleLake County: 29.6 per 100,000 peopleLewis and Clark County: 16 per 100,000 peopleLiberty County: 47.4 per 100,000 peopleLincoln County: 10.4 per 100,000 peopleMcCone County: 0 per 100,000 peopleMadison County: 49.5 per 100,000 peopleMeagher County: 52 per 100,000 peopleMineral County: 47 per 100,000 peopleMissoula County: 14.7 per 100,000 peopleMusselshell County: 0 per 100,000 peoplePark County: 17.9 per 100,000 peoplePetroleum County: 0 per 100,000 peoplePhillips County: 46.1 per 100,000 peoplePondera County: 0 per 100,000 peoplePowder River County: 56.7 per 100,000 peoplePowell County: 87.3 per 100,000 peoplePrairie County: 180 per 100,000 peopleRavalli County: 2.4 per 100,000 peopleRichland County: 17.5 per 100,000 peopleRoosevelt County: 27.2 per 100,000 peopleRosebud County: 33.9 per 100,000 peopleSanders County: 25.1 per 100,000 peopleSheridan County: 27.3 per 100,000 peopleSilver Bow County: 14.3 per 100,000 peopleStillwater County: 22.8 per 100,000 peopleSweet Grass County: 27.3 per 100,000 peopleTeton County: 0 per 100,000 peopleToole County: 0 per 100,000 peopleTreasure County: 562.6 per 100,000 peopleValley County: 52.8 per 100,000 peopleWheatland County: 0 per 100,000 peopleWibaux County: 0 per 100,000 peopleYellowstone County: 7.5 per 100,000 people
  • Under 8
  • 8 to 20
  • 20 to 33
  • 33 to 53
  • 53 and over
per 100,000 people, 2017. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2017

Treasure County: 562.6 per 100,000 peopleTreasure County562.6Prairie County: 180 per 100,000 peoplePrairie County180Broadwater County: 96.9 per 100,000 peopleBroadwater County96.9Big Horn County: 96.7 per 100,000 peopleBig Horn County96.7Powell County: 87.3 per 100,000 peoplePowell County87.3Garfield County: 82.9 per 100,000 peopleGarfield County82.9Chouteau County: 68.1 per 100,000 peopleChouteau County68.1Granite County: 60.2 per 100,000 peopleGranite County60.2Powder River County: 56.7 per 100,000 peoplePowder River County56.7Valley County: 52.8 per 100,000 peopleValley County52.8Meagher County: 52 per 100,000 peopleMeagher County52Glacier County: 50.6 per 100,000 peopleGlacier County50.6Madison County: 49.5 per 100,000 peopleMadison County49.5Liberty County: 47.4 per 100,000 peopleLiberty County47.4Mineral County: 47 per 100,000 peopleMineral County47Phillips County: 46.1 per 100,000 peoplePhillips County46.1Dawson County: 43.4 per 100,000 peopleDawson County43.4Hill County: 36.6 per 100,000 peopleHill County36.6Rosebud County: 33.9 per 100,000 peopleRosebud County33.9Beaverhead County: 32.1 per 100,000 peopleBeaverhead County32.1Lake County: 29.6 per 100,000 peopleLake County29.6Sheridan County: 27.3 per 100,000 peopleSheridan County27.3Sweet Grass County: 27.3 per 100,000 peopleSweet Grass County27.3Roosevelt County: 27.2 per 100,000 peopleRoosevelt County27.2Jefferson County: 25.6 per 100,000 peopleJefferson County25.6Sanders County: 25.1 per 100,000 peopleSanders County25.1Stillwater County: 22.8 per 100,000 peopleStillwater County22.8Deer Lodge County: 21.6 per 100,000 peopleDeer Lodge County21.6Carbon County: 19.3 per 100,000 peopleCarbon County19.3Park County: 17.9 per 100,000 peoplePark County17.9Richland County: 17.5 per 100,000 peopleRichland County17.5Lewis and Clark County: 16 per 100,000 peopleLewis and Clark County16Flathead County: 15.1 per 100,000 peopleFlathead County15.1Missoula County: 14.7 per 100,000 peopleMissoula County14.7Silver Bow County: 14.3 per 100,000 peopleSilver Bow County14.3Lincoln County: 10.4 per 100,000 peopleLincoln County10.4Fergus County: 8.7 per 100,000 peopleFergus County8.7Gallatin County: 8.1 per 100,000 peopleGallatin County8.1Yellowstone County: 7.5 per 100,000 peopleYellowstone County7.5Cascade County: 7.2 per 100,000 peopleCascade County7.2Ravalli County: 2.4 per 100,000 peopleRavalli County2.4Blaine County: 0 per 100,000 peopleBlaine County0Carter County: 0 per 100,000 peopleCarter County0Custer County: 0 per 100,000 peopleCuster County0Daniels County: 0 per 100,000 peopleDaniels County0Fallon County: 0 per 100,000 peopleFallon County0Golden Valley County: 0 per 100,000 peopleGolden Valley County0Judith Basin County: 0 per 100,000 peopleJudith Basin County0McCone County: 0 per 100,000 peopleMcCone County0Musselshell County: 0 per 100,000 peopleMusselshell County0Petroleum County: 0 per 100,000 peoplePetroleum County0Pondera County: 0 per 100,000 peoplePondera County0Teton County: 0 per 100,000 peopleTeton County0Toole County: 0 per 100,000 peopleToole County0Wheatland County: 0 per 100,000 peopleWheatland County0Wibaux County: 0 per 100,000 peopleWibaux County0Treasure County: 562.6 per 100,000 peopleTreasure County562.6Prairie County: 180 per 100,000 peoplePrairie County180Broadwater County: 96.9 per 100,000 peopleBroadwater County96.9Big Horn County: 96.7 per 100,000 peopleBig Horn County96.7Powell County: 87.3 per 100,000 peoplePowell County87.3Garfield County: 82.9 per 100,000 peopleGarfield County82.9Chouteau County: 68.1 per 100,000 peopleChouteau County68.1Granite County: 60.2 per 100,000 peopleGranite County60.2Powder River County: 56.7 per 100,000 peoplePowder River County56.7Valley County: 52.8 per 100,000 peopleValley County52.8Meagher County: 52 per 100,000 peopleMeagher County52Glacier County: 50.6 per 100,000 peopleGlacier County50.6Madison County: 49.5 per 100,000 peopleMadison County49.5Liberty County: 47.4 per 100,000 peopleLiberty County47.4Mineral County: 47 per 100,000 peopleMineral County47Phillips County: 46.1 per 100,000 peoplePhillips County46.1Dawson County: 43.4 per 100,000 peopleDawson County43.4Hill County: 36.6 per 100,000 peopleHill County36.6Rosebud County: 33.9 per 100,000 peopleRosebud County33.9Beaverhead County: 32.1 per 100,000 peopleBeaverhead County32.1Lake County: 29.6 per 100,000 peopleLake County29.6Sheridan County: 27.3 per 100,000 peopleSheridan County27.3Sweet Grass County: 27.3 per 100,000 peopleSweet Grass County27.3Roosevelt County: 27.2 per 100,000 peopleRoosevelt County27.2Jefferson County: 25.6 per 100,000 peopleJefferson County25.6Sanders County: 25.1 per 100,000 peopleSanders County25.1Stillwater County: 22.8 per 100,000 peopleStillwater County22.8Deer Lodge County: 21.6 per 100,000 peopleDeer Lodge County21.6Carbon County: 19.3 per 100,000 peopleCarbon County19.3Park County: 17.9 per 100,000 peoplePark County17.9Richland County: 17.5 per 100,000 peopleRichland County17.5Lewis and Clark County: 16 per 100,000 peopleLewis and Clark County16Flathead County: 15.1 per 100,000 peopleFlathead County15.1Missoula County: 14.7 per 100,000 peopleMissoula County14.7Silver Bow County: 14.3 per 100,000 peopleSilver Bow County14.3Lincoln County: 10.4 per 100,000 peopleLincoln County10.4Fergus County: 8.7 per 100,000 peopleFergus County8.7Gallatin County: 8.1 per 100,000 peopleGallatin County8.1Yellowstone County: 7.5 per 100,000 peopleYellowstone County7.5Cascade County: 7.2 per 100,000 peopleCascade County7.2Ravalli County: 2.4 per 100,000 peopleRavalli County2.4Blaine County: 0 per 100,000 peopleBlaine County0Carter County: 0 per 100,000 peopleCarter County0Custer County: 0 per 100,000 peopleCuster County0Daniels County: 0 per 100,000 peopleDaniels County0Fallon County: 0 per 100,000 peopleFallon County0Golden Valley County: 0 per 100,000 peopleGolden Valley County0Judith Basin County: 0 per 100,000 peopleJudith Basin County0McCone County: 0 per 100,000 peopleMcCone County0Musselshell County: 0 per 100,000 peopleMusselshell County0Petroleum County: 0 per 100,000 peoplePetroleum County0Pondera County: 0 per 100,000 peoplePondera County0Teton County: 0 per 100,000 peopleTeton County0Toole County: 0 per 100,000 peopleToole County0Wheatland County: 0 per 100,000 peopleWheatland 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

RankCounties2017
per 100,000 people
Change on 2016
1Treasure County562.6+143 pts
2Prairie County180+94.7 pts
3Broadwater County96.9+96.9 pts
4Big Horn County96.7-0.1 pts
5Powell County87.3+29.4 pts
6Garfield County82.9+1.7 pts
7Chouteau County68.1+51.1 pts
8Granite County60.2-31.9 pts
9Powder River County56.7+56.7 pts
10Valley County52.8+52.8 pts
11Meagher County52-52.8 pts
12Glacier County50.6-0.1 pts
13Madison County49.5+36.9 pts
14Liberty County47.4+47.4 pts
15Mineral County47-25.4 pts
16Phillips County46.1+22.9 pts
17Dawson County43.4+22.3 pts
18Hill County36.6+36.6 pts
19Rosebud County33.9-44.4 pts
20Beaverhead County32.1-21.2 pts
21Lake County29.6+2.8 pts
22Sheridan County27.3+27.3 pts
23Sweet Grass County27.3-0.4 pts
24Roosevelt County27.2-26.8 pts
25Jefferson County25.6+17 pts
26Sanders County25.1+8 pts
27Stillwater County22.8-45.3 pts
28Deer Lodge County21.6-11 pts
29Carbon County19.3+9.5 pts
30Park County17.9-0.3 pts
31Richland County17.5-8.1 pts
32Lewis and Clark County16+10.1 pts
33Flathead County15.1-3.4 pts
34Missoula County14.7-2.8 pts
35Silver Bow County14.3+5.7 pts
36Lincoln County10.4-10.7 pts
37Fergus County8.7-8.6 pts
38Gallatin County8.1-1.3 pts
39Yellowstone County7.5-3.2 pts
40Cascade County7.2-7.2 pts
41Ravalli County2.4-2.4 pts
42Blaine County0-28.7 pts
42Carter County00 pts
42Custer County0-8.2 pts
42Daniels County00 pts
42Fallon County00 pts
42Golden Valley County00 pts
42Judith Basin County0-51.2 pts
42McCone County00 pts
42Musselshell County0-42.6 pts
42Petroleum County0-203.3 pts
42Pondera County00 pts
42Teton County0-16.6 pts
42Toole County0-38.9 pts
42Wheatland County00 pts
42Wibaux 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, 2017) [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, 2017. 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, 2017. 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, 2017 [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_2017,
  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, 2017}},
  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=2017. 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, 2017
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=2017
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=2017.
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?

Treasure County, with 562.6 per 100,000 people in 2017, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Wibaux County, with 0 per 100,000 people in 2017.

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