Bonneville County, Idaho: fatal crash statistics

Counties of Idaho by year (CSV)Cite this page

FARS records 23 deaths in 16 fatal crashes in Bonneville County in 2024.

FARS records 132 deaths in 116 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 10.8 deaths for each 100,000 residents in a year.

The rate of Idaho in the same years is 13.1.

By deaths from 2015 to 2024, Bonneville County was number 4 of 44 counties of Idaho.

Deaths in Bonneville County rose by 38.9% between the ten years 2005 to 2014 (95) and the ten years 2015 to 2024 (132).

In the counties of Idaho the deaths rose by 7.9% between the same years.

From 2015 to 2024, 56.9% of the fatal crashes in Bonneville County with a known setting were rural, against 74.5% in Idaho.

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 Bonneville 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.Bonneville County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	23	16	9
2023	18	15	7
2022	10	10	5
2021	21	20	4
2020	13	11	4
2019	10	10	3
2018	11	11	4
2017	11	9	0
2016	12	11	1 or 2
2015	3	3	1 or 2
2015 to 2024	132	116	38

Each year from 1975

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

Tallest column: 24 (1981)2024: 23

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

Table 2.Bonneville County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	23	16
2023	18	15
2022	10	10
2021	21	20
2020	13	11
2019	10	10
2018	11	11
2017	11	9
2016	12	11
2015	3	3
2014	10	10
2013	5	5
2012	10	10
2011	9	9
2010	7	7
2009	9	9
2008	8	8
2007	10	8
2006	10	9
2005	17	15
2004	9	9
2003	17	12
2002	19	18
2001	19	16
2000	20	18
1999	18	16
1998	10	8
1997	12	11
1996	17	15
1995	3	3
1994	9	9
1993	8	8
1992	9	8
1991	14	13
1990	10	8
1989	12	11
1988	13	10
1987	16	16
1986	17	12
1985	12	9
1984	11	10
1983	11	7
1982	21	17
1981	24	22
1980	21	18
1979	19	19
1978	20	18
1977	16	14
1976	14	14
1975	17	15

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.Bonneville County beside Idaho and the United States: deaths for each 100,000 residents
Period	Bonneville County	Idaho	United States
2024	17.2	11.9	11.5
2015 to 2024, in a year	10.8	13.1	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. Bonneville County had 133,793 residents in 2024.

Factors that NHTSA records

Table 4.Bonneville County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in Idaho
A driver recorded as drinkingof 116 fatal crashes	38	116 fatal crashes	32.8%	31.2%
A speeding-related driverof 116 fatal crashes	34	116 fatal crashes	29.3%	22.4%
No restraint usedof 88 occupant deaths with restraint use known	49	88 occupant deathswith restraint use known	55.7%	58.3%
Pedestriansof 132 deaths	12	132 deaths	9.1%	6.9%
Bicyclistsof 132 deaths	3	132 deaths	2.3%	1.4%
Motorcyclistsof 132 deaths	15	132 deaths	11.4%	13.1%
On a rural roadof 116 fatal crashes with the condition reported	66	116 fatal crasheswith the condition reported	56.9%	74.5%
In the darkof 116 fatal crashes with the condition reported	41	116 fatal crasheswith the condition reported	35.3%	35.7%

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.Bonneville 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	9	1 or 2	0	4	15
Monday	1 or 2	3	8	3	15
Tuesday	1 or 2	1 or 2	4	5	12
Wednesday	3	1 or 2	3	6	14
Thursday	1 or 2	6	10	5	22
Friday	1 or 2	3	6	6	17
Saturday	5	1 or 2	7	7	21
All days	22	20	38	36	116

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.Bonneville County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in Idaho
Interstate	10	8.6%	15.8%
Other freeways and expressways	4	3.4%	1.2%
Other principal arterial	41	35.3%	32.9%
Minor arterial	19	16.4%	16.0%
Major collector	25	21.6%	17.4%
Minor collector	4	3.4%	3.0%
Local	13	11.2%	13.8%
Not reported	0	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.Bonneville County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	66
Dark, not lighted	30
Dark, lighted	11
Dawn	4
Dusk	5
Dark, lighting unknown	0
Other or unknown	0

Table 8.Bonneville County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	87
Cloudy	20
Rain	1 or 2
Snow, sleet or freezing rain	5
Fog, smog or smoke	0
Crosswinds or blowing sand/snow	1 or 2
Other or not reported	0

Routes in the county

Table 9.Signed routes in Bonneville County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Bonneville	In all of Idaho
Interstate 15	Interstate	11	87
US Route 20	US highway	12	101
US Route 26	US highway	25	40
US Route 91	US highway	4	30

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 Idaho

Adjacent counties

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

Figure 3.Bonneville County on the county map of Idaho

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

Fewer than 104 counties
10 to 14.98 counties
15 to 19.98 counties
20 to 29.914 counties
30 or more10 counties
Bonneville County: 10.8

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 Idaho

Table 10.Counties that share a boundary line with Bonneville County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Bingham County	Idaho	8	99	20.7
Caribou County	Idaho	0	16	22.7
Jefferson County	Idaho	1 or 2	35	11.3
Madison County	Idaho	4	24	5.1
Teton County	Idaho	1 or 2	16	13.4
Lincoln County	Wyoming	0	59	29.6
Teton County	Wyoming	5	25	10.7

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

Counties of similar population

These counties of Idaho have a population nearest to that of Bonneville 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.
Idaho Office of Highway SafetyThe highway safety office of Idaho.

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

Cite this page

Fatal Roads. Bonneville County, Idaho: fatal crash statistics. https://fatalroads.com/county/id/bonneville/. 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 Bonneville in the ten years before 2015?

FARS records 95 deaths in Bonneville County from 2005 to 2014. It records 132 deaths from 2015 to 2024.

What was the rate of Bonneville in 2024?

The rate of Bonneville County in 2024 was 17.2 deaths for each 100,000 residents. The rate of Idaho was 11.9. The rate of the United States was 11.5.

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

FARS records a driver as drinking in 38 of 116 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 Bonneville?

4 signed routes in the county have a page. FARS records 52 fatal crashes on them in the county from 2015 to 2024. The table of routes on this page gives the count for each route.