Fatal crash rate · State
Fatal crash rate in Idaho
Fatal crashes recorded by NHTSA in Idaho, 2020 to 2024, divided by the people who live there and the miles driven there. Fatal crashes only: not injuries, not all crashes, not traffic in general.
Idaho2024 · fatal crashes recorded by NHTSA
10.9fatal crashes per 100,000 residents in 2024
In 2024, NHTSA recorded 219 fatal crashes in Idaho, where 2,000,872 people lived. That is 10.9 fatal crashes for every 100,000 residents, and 238 people died in those crashes. Over 2020 to 2024 the average was 11.3. Per mile driven, Idaho had 1.1 fatal crashes per 100 million vehicle-miles in 2024.
The road is a scale of fatal crashes per 100,000 residents in 2024, 0 to 40. The yellow post is Idaho; the white posts are the United States.
- Per 100,000
- 219 fatal crashes ÷ 2,000,872 residents × 100,000 = 10.9
- Five-year
- 1,089 crashes (2020 to 2024) ÷ 9,668,503 resident-years × 100,000 = 11.3
- Per 100M miles
- 219 fatal crashes ÷ 20,046 million vehicle-miles (2024) × 100 = 1.1
- Same year
- United States: 36,297 ÷ 340,003,797 = 10.7
Every year, 2020 to 2024
| Year | Fatal crashes | Deaths | Population | Per 100,000 | Vehicle-miles (millions) | Per 100M miles |
|---|---|---|---|---|---|---|
| 2020 | 188 | 214 | 1,849,328 | 10.2 | 17,406 | 1.1 |
| 2021 | 246 | 273 | 1,904,855 | 12.9 | 19,308 | 1.3 |
| 2022 | 194 | 215 | 1,942,951 | 10.0 | 19,157 | 1.0 |
| 2023 | 242 | 275 | 1,970,497 | 12.3 | 19,718 | 1.2 |
| 2024 | 219 | 238 | 2,000,872 | 10.9 | 20,046 | 1.1 |
2024 is NHTSA’s Annual Report File and will be revised when the final file replaces it. Populations are July 1 estimates, Census Vintage 2025.
What the record says about those crashes, 2020 to 2024
Every figure is a count of the 1,089 fatal crashes NHTSA coded to Idaho over five years, from the fields FARS records. Nothing is estimated or inferred.
| Road type | Crashes | Share |
|---|---|---|
| Interstate | 146 | 13% |
| Other freeway or expressway | 14 | 1% |
| Other principal arterial | 341 | 31% |
| Minor arterial | 203 | 19% |
| Major collector | 209 | 19% |
| Minor collector | 38 | 3% |
| Local road | 137 | 13% |
| Unknown or not reported | 1 | 0% |
| Rural | 787 | 72% |
| Urban | 301 | 28% |
| Time of day | Crashes | Share |
|---|---|---|
| Midnight to 5:59 am | 160 | 15% |
| 6 am to 11:59 am | 240 | 22% |
| Noon to 5:59 pm | 378 | 35% |
| 6 pm to 11:59 pm | 298 | 27% |
| Hour unknown | 13 | 1% |
| Light | Crashes | Share |
|---|---|---|
| Daylight | 640 | 59% |
| Dark, not lighted (or lighting unknown) | 287 | 26% |
| Dark, lighted | 95 | 9% |
| Dawn or dusk | 66 | 6% |
| Unknown or not reported | 1 | 0% |
| Weather | Crashes | Share |
|---|---|---|
| Clear | 815 | 75% |
| Cloudy | 162 | 15% |
| Rain | 53 | 5% |
| Snow, sleet or freezing rain | 34 | 3% |
| Fog, smog or smoke | 17 | 2% |
| Severe wind, blowing sand or other | 7 | 1% |
| Unknown or not reported | 1 | 0% |
| Involving | Crashes | Share |
|---|---|---|
| A pedestrian | 96 | 9% |
| A bicyclist or other cyclist | 19 | 2% |
| A speeding-related vehicle | 255 | 23% |
| A driver police reported as drinking | 299 | 27% |
Road type is FARS FUNC_SYS; speeding is any vehicle coded SPEEDREL 2 to 5; drinking is any driver coded DRINKING = 1 (police-reported, not a blood-alcohol test). Road names are the trafficway strings as the police coded them, counted as written, so the same road can appear under two spellings.
Counties in Idaho
Alphabetical, with each county’s 2024 fatal crashes and rate per 100,000. The site does not rank them: a small county’s rate swings on one crash.
- Ada County 29 · 5.4
- Adams County 2 · 39.9
- Bannock County 7 · 7.7
- Bear Lake County 1 · 14.9
- Benewah County 1 · 9.5
- Bingham County 7 · 13.7
- Blaine County 1 · 3.9
- Boise County 3 · 35.3
- Bonner County 5 · 9.3
- Bonneville County 16 · 12.0
- Boundary County 1 · 7.2
- Butte County 0 · 0.0
- Camas County 0 · 0.0
- Canyon County 21 · 7.9
- Caribou County 0 · 0.0
- Cassia County 11 · 42.0
- Clark County 1 · 127.9
- Clearwater County 1 · 10.9
- Custer County 1 · 21.8
- Elmore County 3 · 10.1
- Franklin County 5 · 31.9
- Fremont County 1 · 7.0
- Gem County 2 · 9.3
- Gooding County 7 · 42.7
- Idaho County 13 · 72.7
- Jefferson County 1 · 2.9
- Jerome County 7 · 26.6
- Kootenai County 12 · 6.4
- Latah County 2 · 4.8
- Lemhi County 0 · 0.0
- Lewis County 1 · 26.9
- Lincoln County 4 · 71.0
- Madison County 4 · 7.3
- Minidoka County 2 · 8.8
- Nez Perce County 7 · 16.3
- Oneida County 2 · 39.9
- Owyhee County 3 · 23.5
- Payette County 9 · 32.5
- Power County 3 · 36.0
- Shoshone County 3 · 21.4
- Teton County 1 · 7.6
- Twin Falls County 13 · 13.5
- Valley County 4 · 31.2
- Washington County 2 · 17.4
How this is counted
- Fatal crashes are rows in NHTSA’s Fatality Analysis Reporting System (FARS) file
FARS2024NationalCSV.zip,accident.csv, one row per crash on a public road in which someone died within 30 days. Deaths are theFATALSfield. Counties are the FARSSTATEandCOUNTYcodes joined to Census FIPS codes. - Population is the Census Bureau’s July 1 estimate for the same year, county totals, Vintage 2025. Rate per 100,000 = crashes ÷ population × 100,000.
- Vehicle-miles are FHWA Highway Statistics table VM-2, total annual travel by state. Rate per 100 million vehicle-miles = crashes ÷ miles × 100,000,000, the form the federal safety rule uses (23 CFR 490.207). FHWA publishes no county vehicle-miles, so county pages have no per-mile rate.
- The five-year average is total crashes over the years with both inputs ÷ total population over those years × 100,000, the rolling form in 23 CFR 490.207.
- What it cannot say. FARS has no injury-only or property-damage crashes, no congestion, and nothing about any one driver, trip or road’s risk. A crash is counted where it happened, not where the people lived. Rates are not ranked here; comparing two places means comparing both sets of inputs.
Informational only, not professional advice. Last reviewed: October 2026. Data snapshot built 2026-10-28.