Big Horn County, Montana: fatal crash statistics

Counties of Montana by year (CSV)Cite this page

FARS records 10 deaths in 7 fatal crashes in Big Horn County in 2024.

FARS records 130 deaths in 109 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 99.0 deaths for each 100,000 residents in a year.

The rate of Montana in the same years is 18.9.

By deaths from 2015 to 2024, Big Horn County was number 4 of 56 counties of Montana.

Deaths in Big Horn County rose by 25.0% between the ten years 2005 to 2014 (104) and the ten years 2015 to 2024 (130).

In the counties of Montana the deaths fell by 9.7% between the same years.

From 2015 to 2024, 78.1% of the occupants killed in Big Horn County with restraint use known had no restraint, against 63.3% in Montana.

To qualify as a FARS case, the crash had to involve a motor vehicle traveling on a trafficway customarily open to the public and must have resulted in the death of a motorist or a non-motorist within 30 days of the crash.
The set of first files, known as the Annual Report File (ARF), is released following the crash year. The ARF is replaced about a year later with a final file, which contains additional cases or updates to cases that had become available after the ARF was released.
NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

This page rests on the FARS 2024 annual file. NHTSA released it on 1 Apr 2026. NHTSA can revise the counts in the final file. Release dates

Figure 1.Deaths in Big Horn County by year, 2015 to 2024

Table 1 has the numbers. Go to the table

Since the last update: no figure of this county has a change on record.

Deaths and fatal crashes by year

Table 1.Big Horn County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	10	7	5
2023	9	9	3
2022	21	16	4
2021	9	9	1 or 2
2020	16	13	6
2019	16	11	10
2018	12	11	8
2017	13	11	7
2016	13	12	6
2015	11	10	5
2015 to 2024	130	109	55

Each year from 1975

Figure 2.Deaths in Big Horn County by year, 1975 to 2024

Tallest column: 21 (2022)2024: 10

The columns with a stronger shade are the years 2015 to 2024.

Table 2.Big Horn County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	10	7
2023	9	9
2022	21	16
2021	9	9
2020	16	13
2019	16	11
2018	12	11
2017	13	11
2016	13	12
2015	11	10
2014	9	8
2013	10	8
2012	11	9
2011	7	4
2010	13	10
2009	9	8
2008	12	9
2007	11	9
2006	11	10
2005	11	10
2004	8	8
2003	10	8
2002	17	12
2001	10	9
2000	11	9
1999	13	13
1998	6	5
1997	6	6
1996	5	5
1995	7	5
1994	10	10
1993	10	8
1992	9	7
1991	12	10
1990	11	10
1989	6	6
1988	12	10
1987	8	4
1986	5	5
1985	5	3
1984	5	4
1983	5	5
1982	7	6
1981	14	9
1980	11	9
1979	14	7
1978	8	8
1977	8	8
1976	14	9
1975	14	12

Note: a count of 1 or 2 is written "1 or 2". A death is in FARS when it occurs in 30 days or less after the crash.

Rate for each 100,000 residents

Table 3.Big Horn County beside Montana and the United States: deaths for each 100,000 residents
Period	Big Horn County	Montana	United States
2024	77.8	18.1	11.5
2015 to 2024, in a year	99.0	18.9	11.8

Note: the rate divides the deaths in the county by its residents. Persons who do not live in the county are in the deaths, not in the residents.

Population: Census Bureau estimates, vintage 2025. Big Horn County had 12,847 residents in 2024.

Factors that NHTSA records

Table 4.Big Horn County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in Montana
A driver recorded as drinkingof 109 fatal crashes	55	109 fatal crashes	50.5%	43.9%
A speeding-related driverof 109 fatal crashes	27	109 fatal crashes	24.8%	35.8%
No restraint usedof 105 occupant deaths with restraint use known	82	105 occupant deathswith restraint use known	78.1%	63.3%
Pedestriansof 130 deaths	13	130 deaths	10.0%	7.5%
Bicyclistsof 130 deaths	0	130 deaths	0.0%	1.0%
Motorcyclistsof 130 deaths	4	130 deaths	3.1%	13.0%
On a rural roadof 108 fatal crashes with the condition reported	105	108 fatal crasheswith the condition reported	97.2%	83.5%
In the darkof 109 fatal crashes with the condition reported	51	109 fatal crasheswith the condition reported	46.8%	41.8%

Note: FARS records a driver as drinking when police reported alcohol involvement or a test of the driver was positive for alcohol. It is not NHTSA's alcohol-impaired measure, which uses a blood alcohol concentration of .08 g/dL or higher. One crash can be in two or more rows. NHTSA's definitions

Note that alcohol data is often missing. For that reason, this data element may under-count the actual number of drinking drivers.

NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

Weekday, time and road class

Table 5.Big Horn County: fatal crashes by weekday and time of day, 2015 to 2024
Weekday	Midnight to 6 a.m.	6 a.m. to noon	Noon to 6 p.m.	6 p.m. to midnight	All
Sunday	3	1 or 2	5	4	14
Monday	4	4	4	7	19
Tuesday	5	1 or 2	3	5	14
Wednesday	3	1 or 2	3	0	7
Thursday	1 or 2	3	5	3	13
Friday	4	1 or 2	7	8	21
Saturday	8	3	8	1 or 2	21
All days	29	16	35	29	109

Note: a cell with a stronger shade has a larger count. The table has the fatal crashes with a known hour and weekday.

Table 6.Big Horn County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in Montana
Interstate	23	21.3%	16.6%
Other freeways and expressways	0	0.0%	0.2%
Other principal arterial	28	25.9%	32.9%
Minor arterial	1 or 2	0.9%	15.2%
Major collector	35	32.4%	15.2%
Minor collector	7	6.5%	4.1%
Local	14	13.0%	15.8%
Not reported	1 or 2	n/a	n/a

Note: the classes are those of the Federal Highway Administration. The shares are of the crashes with a reported class. Road function classes

Light condition and weather

Table 7.Big Horn County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	53
Dark, not lighted	50
Dark, lighted	0
Dawn	3
Dusk	1 or 2
Dark, lighting unknown	1 or 2
Other or unknown	0

Table 8.Big Horn County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	69
Cloudy	29
Rain	4
Snow, sleet or freezing rain	3
Fog, smog or smoke	1 or 2
Crosswinds or blowing sand/snow	3
Other or not reported	0

Routes in the county

Table 9.Signed routes in Big Horn County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Big Horn	In all of Montana
Interstate 90	Interstate	23	203
US Route 212	US highway	19	59

Note: the table has each route with a page that has a fatal crash in the county, in name order. Local streets and county roads have no page. Their crashes are in the county totals. All routes in Montana

Adjacent counties

These lists are for navigation. They are in name order.

Figure 3.Big Horn County on the county map of Montana

Deaths for each 100,000 residents in a year, 2015 to 2024

Fewer than 102 counties
10 to 14.911 counties
15 to 19.96 counties
20 to 29.97 counties
30 or more27 counties
Count of 1 or 2, no rate shown3 counties
Big Horn County: 99.0

The limits of the classes are the same for every state. A county with few residents can show a high rate from few deaths. A class is not a judgement of a county. The full map and the table of counties of Montana

Table 10.Counties that share a boundary line with Big Horn County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Carbon County	Montana	4	42	38.7
Powder River County	Montana	0	9	52.0
Rosebud County	Montana	3	47	54.2
Treasure County	Montana	1 or 2	10	139.3
Yellowstone County	Montana	24	203	12.4
Big Horn County	Wyoming	1 or 2	22	18.6
Sheridan County	Wyoming	3	32	10.3

Source of the list: Census Bureau county adjacency file, 2026 edition.

Counties of similar population

These counties of Montana have a population nearest to that of Big Horn County. The list is for navigation and is in name order. The number is the deaths from 2015 to 2024.

Official channels

NHTSA Fatality and Injury Reporting System Tool (FIRST)NHTSA's query tool for FARS counts.
NHTSA FARS EncyclopediaNHTSA's tables of FARS data.
Governors Highway Safety Association: State Highway Safety OfficesThe list of the highway safety offices of the states.

These links go to the sites of the agencies. They were checked on 2 Oct 2026.

Cite this page

Fatal Roads. Big Horn County, Montana: fatal crash statistics. https://fatalroads.com/county/mt/big-horn/. Source: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, FARS 2024 annual file. Data to 31 Dec 2024.

The address of this page does not change.

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Source of the figures

Counts: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, national files of 1975 to 2024. The factors use the vehicle and person files from 2015. Residents: Census Bureau, Population Estimates Program, vintage 2025. Map: Census Bureau cartographic boundary file, 2021 edition. Data to 31 Dec 2024. The figures are totals. No page of this site is about one crash or one person.

How the figures are made. Data sources and licences. Corrections.

Questions

How many deaths did FARS record in Big Horn in the ten years before 2015?

FARS records 104 deaths in Big Horn County from 2005 to 2014. It records 130 deaths from 2015 to 2024.

What was the rate of Big Horn in 2024?

The rate of Big Horn County in 2024 was 77.8 deaths for each 100,000 residents. The rate of Montana was 18.1. The rate of the United States was 11.5.

How many fatal crashes in Big Horn had a driver recorded as drinking?

FARS records a driver as drinking in 55 of 109 fatal crashes from 2015 to 2024. This count is not NHTSA's alcohol-impaired measure. NHTSA says that alcohol data is often missing, so the count may be too low.

How many fatal crashes did FARS record on signed routes in Big Horn?

FARS records 23 fatal crashes on Interstate 90 in the county from 2015 to 2024. FARS records 19 fatal crashes on US Route 212 in the county from 2015 to 2024.