Fatal crashes in Big Horn County, Montana
In 2024, 10 people died in 7 fatal crashes in Big Horn County, Montana, up from 9 in 2023. From 2015 to 2024 the county recorded 109 fatal crashes and 130 deaths, the 4th most of 55 counties in Montana.
78.1 deaths per 100,000 residents, against 18.1 across Montana in 2024; 98.9 against 18.9 a year over 2015 to 2024. Population 12,796, Census Bureau estimate. All fatal crashes in Montana.
Deaths in Big Horn County by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 7 | 10 |
| 2023 | 9 | 9 |
| 2022 | 16 | 21 |
| 2021 | 9 | 9 |
| 2020 | 13 | 16 |
| 2019 | 11 | 16 |
| 2018 | 11 | 12 |
| 2017 | 11 | 13 |
| 2016 | 12 | 13 |
| 2015 | 10 | 11 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
The deadliest roads in Big Horn County
I-90 had the most fatal crashes of any numbered road in Big Horn County from 2015 to 2024: 23, with 27 deaths. The 5 roads listed held 56% of all fatal crashes in Big Horn County from 2015 to 2024; 1 is an interstate, 1 US route, 3 state highways. 60% of the county's fatal crashes were on an interstate, US or state route; the other 40% were on county roads and city streets. Routes are listed from 5 fatal crashes.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | I-90 | 23 | 27 | 13 | |
| 2 | US 212 | 19 | 24 | 6 | |
| 3 | State Highway 451 | 9 | 10 | 0 | no page |
| 4 | State Highway 314 | 5 | 7 | 0 | no page |
| 5 | State Highway 313 | 5 | 6 | 0 | no page |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen in Big Horn County
109 fatal crashes in Big Horn County, Montana from 2015 to 2024 have a known time, too few for any one weekday and time of day to stand out. The worst hour is 1 am to 2 am; the worst month is August.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 2.8 percent, 3 fatal crashes | 0.9 percent, 1 fatal crash | 0.9 percent, 1 fatal crash | 1.8 percent, 2 fatal crashes | 3.7 percent, 4 fatal crashes | 2.8 percent, 3 fatal crashes |
| Mon | 1.8 percent, 2 fatal crashes | 1.8 percent, 2 fatal crashes | 3.7 percent, 4 fatal crashes | 1.8 percent, 2 fatal crashes | 4.6 percent, 5 fatal crashes | 3.7 percent, 4 fatal crashes |
| Tue | 3.7 percent, 4 fatal crashes | 1.8 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 1.8 percent, 2 fatal crashes | 3.7 percent, 4 fatal crashes | 1.8 percent, 2 fatal crashes |
| Wed | 1.8 percent, 2 fatal crashes | 0.9 percent, 1 fatal crash | 0.9 percent, 1 fatal crash | 2.8 percent, 3 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes |
| Thu | 1.8 percent, 2 fatal crashes | 0.9 percent, 1 fatal crash | 1.8 percent, 2 fatal crashes | 2.8 percent, 3 fatal crashes | 1.8 percent, 2 fatal crashes | 2.8 percent, 3 fatal crashes |
| Fri | 3.7 percent, 4 fatal crashes | 0.9 percent, 1 fatal crash | 0.9 percent, 1 fatal crash | 2.8 percent, 3 fatal crashes | 7.3 percent, 8 fatal crashes | 3.7 percent, 4 fatal crashes |
| Sat | 3.7 percent, 4 fatal crashes | 3.7 percent, 4 fatal crashes | 2.8 percent, 3 fatal crashes | 3.7 percent, 4 fatal crashes | 3.7 percent, 4 fatal crashes | 1.8 percent, 2 fatal crashes |
By hour
By month
- Jan5.5%
- Feb2.8%
- Mar6.4%
- Apr6.4%
- May11.0%
- Jun10.1%
- Jul14.7%
- Aug15.6%
- Sep4.6%
- Oct6.4%
- Nov10.1%
- Dec6.4%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in Big Horn County first hit
The first harmful event was a fixed object such as a tree, pole or barrier in 32%; a collision with another vehicle in 26%, a rollover in 23%, a pedestrian in 9.2%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Fixed object (tree, pole, barrier, ditch) | 35 | 32% |
| Collision with another vehicle | 28 | 26% |
| Rollover | 25 | 23% |
| Other | 11 | 10% |
| Pedestrian | 10 | 9.2% |
| Cyclist | 0 | 0.0% |
| Parked vehicle | 0 | 0.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes in Big Horn County compare with Montana
The largest difference from Montana: from 2015 to 2024, 97% of fatal crashes in Big Horn County were on rural roads, against 84% across Montana. Also above the Montana share: unlit roads at night and unbelted occupants. Below it: intersections, speeding and motorcycles. Shares of fatal crashes from 2015 to 2024, against the share across all of Montana. A share is only given over 20 crashes; above or below means more than chance would give on 109 crashes.
| Big Horn | Montana | ||
|---|---|---|---|
| On rural roads | 97% | 84% | above the Montana share |
| At or near an intersection | 7.3% | 15% | below the Montana share |
| In the dark, road unlit | 46% | 35% | above the Montana share |
| A drinking driver | 51% | 44% | about the same as the Montana share |
| Speeding | 25% | 36% | below the Montana share |
| A distracted driver (as recorded) | 11% | 8.7% | about the same as the Montana share |
| Occupants killed unbelted | 78% | 64% | above the Montana share |
| Hit-and-run | 4.6% | 2.7% | about the same as the Montana share |
| A motorcycle involved | 3.7% | 14% | below the Montana share |
| Pedestrians among the dead | 10% | 7.5% | about the same as the Montana share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in Big Horn County, Montana
- How many people died in car accidents in Big Horn County in 2024?
- 10 people died in 7 fatal crashes in Big Horn County, Montana, in 2024, up from 9 in 2023. That is 78.1 deaths per 100,000 residents, against 18.1 across Montana. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- What is the deadliest road in Big Horn County?
- I-90 had the most fatal crashes of any numbered road in Big Horn County from 2015 to 2024: 23, with 27 deaths.
- How many fatal crashes in Big Horn County involved a drinking driver?
- 55 of 109 fatal crashes in Big Horn County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 51%, against 44% across Montana.
Other counties in Montana with a page
- Yellowstone County
- Flathead County
- Missoula County
- Gallatin County
- Cascade County
- Lake County
- Lewis and Clark County
- Jefferson County
- Glacier County
- Lincoln County
- Ravalli County
- Park County
All fatal crashes in Montana, with every county ranked.
Where the Big Horn County numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in Big Horn County (county code 3). A fatal crash is one in which someone died within 30 days. The rate per 100,000 uses the Census Bureau's population estimate for the county; it is the only figure here not counted from FARS. Totals from state highway departments and news reports can differ: they count from their own crash reports, often before every death within 30 days is known, while NHTSA's file is checked against death certificates and revised once a year. The full method.
Download every county with a page as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/montana/big-horn-county/, from NHTSA FARS (2024 Annual Report File).”