Fatal crashes in Idaho
In 2024, 238 people died in 219 fatal crashes on Idaho roads, 13.5% fewer than in 2023. That is about 1 death a day, and 0.6% of all road deaths in the United States.
Idaho ranks 39th of 51 by road deaths in 2024, and 26th by deaths per resident. Every state in 2024.
Road deaths in Idaho since 1975
Road deaths in Idaho peaked in 1979 at 333; 2024's 238 is 29% below that. The lowest year was 2011 with 167. 2024 is 14% below 2000 and 15% below 1975.
| Year | Deaths | Fatal crashes | Change |
|---|---|---|---|
| 2024 | 238 | 219 | -13.5% |
| 2023 | 275 | 242 | +27.9% |
| 2022 | 215 | 194 | -21.2% |
| 2021 | 273 | 246 | +27.6% |
| 2020 | 214 | 188 | -4.5% |
| 2019 | 224 | 201 | -4.3% |
| 2018 | 234 | 215 | -4.5% |
| 2017 | 245 | 224 | -3.2% |
| 2016 | 253 | 232 | +17.1% |
| 2015 | 216 | 198 | +16.1% |
Show 1975 to 2014
| Year | Deaths | Fatal crashes | Change |
|---|---|---|---|
| 2014 | 186 | 175 | -13.1% |
| 2013 | 214 | 200 | +16.3% |
| 2012 | 184 | 169 | +10.2% |
| 2011 | 167 | 152 | -20.1% |
| 2010 | 209 | 185 | -7.5% |
| 2009 | 226 | 199 | -2.6% |
| 2008 | 232 | 212 | -7.9% |
| 2007 | 252 | 218 | -5.6% |
| 2006 | 267 | 239 | -2.9% |
| 2005 | 275 | 243 | +5.8% |
| 2004 | 260 | 240 | -11.3% |
| 2003 | 293 | 261 | +11.0% |
| 2002 | 264 | 230 | +1.9% |
| 2001 | 259 | 225 | -6.2% |
| 2000 | 276 | 241 | -0.7% |
| 1999 | 278 | 245 | +4.9% |
| 1998 | 265 | 224 | +2.3% |
| 1997 | 259 | 220 | +0.4% |
| 1996 | 258 | 228 | -1.5% |
| 1995 | 262 | 233 | +4.8% |
| 1994 | 250 | 219 | +8.7% |
| 1993 | 230 | 199 | -5.3% |
| 1992 | 243 | 207 | -8.0% |
| 1991 | 264 | 221 | +8.2% |
| 1990 | 244 | 210 | +2.5% |
| 1989 | 238 | 212 | -7.4% |
| 1988 | 257 | 228 | -1.2% |
| 1987 | 260 | 242 | +0.8% |
| 1986 | 258 | 220 | +1.2% |
| 1985 | 255 | 218 | +5.4% |
| 1984 | 242 | 215 | -8.0% |
| 1983 | 263 | 231 | +2.7% |
| 1982 | 256 | 212 | -12.6% |
| 1981 | 293 | 256 | -11.5% |
| 1980 | 331 | 287 | -0.6% |
| 1979 | 333 | 285 | +1.8% |
| 1978 | 327 | 277 | +0.6% |
| 1977 | 325 | 275 | +16.5% |
| 1976 | 279 | 232 | -0.7% |
| 1975 | 281 | 235 | No data |
Deaths within 30 days of a crash on a public road, as NHTSA counts them. 2024 is the latest year NHTSA has published; the 2024 figures are from the Annual Report File and may be revised when NHTSA releases the final file. The 2025 file is expected in spring 2027.
The deadliest roads and most dangerous highways in Idaho
I-84 had the most fatal crashes of any numbered road in Idaho from 2015 to 2024: 187, with 204 deaths. The 20 roads listed held 48% of all fatal crashes in Idaho from 2015 to 2024; 4 are interstates, 7 US routes, 9 state highways. Interstate, US and state routes ranked by fatal crashes from 2015 to 2024; ramps and frontage roads are left out (24 crashes). Over 2022 to 2024 alone, US 95 had the most, 50 against 46 on I-84. Roads with 15 or more fatal crashes in 2022 to 2024 have their own page. Every numbered road in Idaho, ranked.
| Road | Fatal crashes | Deaths | 2022 to 2024 | Counties with the most | |
|---|---|---|---|---|---|
| 1 | I-84 | 187 | 204 | 46 | Elmore, Ada, Jerome |
| 2 | US 95 | 178 | 206 | 50 | Kootenai, Idaho, Nez Perce |
| 3 | US 20 | 102 | 119 | 39 | Canyon, Fremont, Ada |
| 4 | I-15 | 86 | 95 | 19 | Bannock, Bingham, Bonneville |
| 5 | State Highway 55 | 66 | 71 | 19 | Canyon, Boise, Valley |
| 6 | US 93 | 60 | 66 | 19 | Twin Falls, Jerome, Lemhi |
| 7 | US 30 | 53 | 64 | 15 | Twin Falls, Bannock, Cassia |
| 8 | US 26 | 41 | 45 | 8 | Bonneville, Bingham, Lincoln |
| 9 | US 12 | 40 | 41 | 16 | Idaho, Nez Perce, Clearwater |
| 10 | I-90 | 31 | 33 | 6 | Kootenai, Shoshone |
| 11 | US 91 | 30 | 35 | 12 | Bannock, Franklin, Bingham |
| 12 | State Highway 75 | 29 | 35 | 6 | Blaine, Custer, Lincoln |
| 13 | State Highway 21 | 27 | 29 | 9 | Boise, Ada, Custer |
| 14 | State Highway 33 | 22 | 26 | 11 | Teton, Jefferson, Madison |
| 15 | I-86 | 16 | 17 | 10 | Power, Cassia, Bannock |
| 16 | State Highway 16 | 16 | 17 | 5 | Gem, Ada |
| 17 | State Highway 39 | 15 | 17 | 5 | Bingham, Power |
| 18 | State Highway 44 | 15 | 16 | 5 | Ada, Canyon |
| 19 | State Highway 53 | 13 | 14 | 3 | Kootenai |
| 20 | State Highway 25 | 12 | 15 | 6 | Jerome, Minidoka |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Download every numbered road in Idaho as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/idaho/, from NHTSA FARS (2024 Annual Report File).”
The deadliest counties in Idaho
Ada County had the most fatal crashes in Idaho from 2015 to 2024: 240, with 259 deaths. Ada, Canyon and Kootenai counties together held 28% of fatal crashes in Idaho from 2015 to 2024; the 20 listed held 80%. 44 counties in Idaho recorded a fatal crash in those years; the 20 with the most are listed, with deaths per 100,000 residents where the county had 10 or more deaths in 2024.
Per resident, Idaho County has the highest rate in Idaho: 48.5 road deaths per 100,000 residents a year from 2015 to 2024, against 13.1 for the state as a whole. Counties with fewer than 10,000 residents are hatched rather than shaded: a few crashes on a highway through a small county make a rate that says more about its population than its roads.
| County | 2024 | 2015 to 2024 | Deaths | Deaths per 100,000100K, 2024 | |
|---|---|---|---|---|---|
| 1 | Ada County | 29 | 240 | 259 | 5.4 |
| 2 | Canyon County | 21 | 227 | 246 | 8.6 |
| 3 | Kootenai County | 12 | 143 | 154 | 6.4 |
| 4 | Bonneville County | 16 | 116 | 132 | 17.2 |
| 5 | Twin Falls County | 13 | 101 | 112 | 14.5 |
| 6 | Jerome County | 7 | 90 | 100 | Not enough data |
| 7 | Bingham County | 7 | 85 | 99 | Not enough data |
| 8 | Bannock County | 7 | 84 | 99 | Not enough data |
| 9 | Elmore County | 3 | 82 | 90 | Not enough data |
| 10 | Bonner County | 5 | 76 | 88 | Not enough data |
| 11 | Idaho County | 13 | 69 | 82 | 83.7 |
| 12 | Nez Perce County | 7 | 69 | 73 | Not enough data |
| 13 | Cassia County | 11 | 62 | 71 | 46.2 |
| 14 | Boise County | 3 | 58 | 60 | Not enough data |
| 15 | Payette County | 9 | 45 | 50 | Not enough data |
| 16 | Gooding County | 7 | 43 | 46 | Not enough data |
| 17 | Minidoka County | 2 | 36 | 37 | Not enough data |
| 18 | Shoshone County | 3 | 35 | 37 | Not enough data |
| 19 | Jefferson County | 1 | 33 | 35 | Not enough data |
| 20 | Fremont County | 1 | 31 | 37 | Not enough data |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Download every county with a page as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/idaho/, from NHTSA FARS (2024 Annual Report File).”
The deadliest counties in America: every county ranked nationally, and per resident
When fatal crashes happen in Idaho
The heaviest slot is Saturday, 4 to 8 pm, with 98 fatal crashes from 2015 to 2024. The worst hour is 4 pm to 5 pm; the worst month is July.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 2.8 percent, 60 fatal crashes | 1.4 percent, 29 fatal crashes | 1.7 percent, 36 fatal crashes | 2.7 percent, 58 fatal crashes | 3.8 percent, 82 fatal crashes | 1.7 percent, 37 fatal crashes |
| Mon | 0.9 percent, 20 fatal crashes | 1.4 percent, 30 fatal crashes | 2.7 percent, 57 fatal crashes | 2.9 percent, 62 fatal crashes | 3.2 percent, 68 fatal crashes | 2.0 percent, 42 fatal crashes |
| Tue | 1.2 percent, 26 fatal crashes | 1.8 percent, 39 fatal crashes | 1.7 percent, 36 fatal crashes | 3.5 percent, 75 fatal crashes | 3.4 percent, 73 fatal crashes | 1.8 percent, 39 fatal crashes |
| Wed | 0.8 percent, 18 fatal crashes | 2.2 percent, 46 fatal crashes | 2.2 percent, 48 fatal crashes | 2.2 percent, 48 fatal crashes | 3.4 percent, 72 fatal crashes | 1.8 percent, 39 fatal crashes |
| Thu | 1.0 percent, 22 fatal crashes | 1.4 percent, 30 fatal crashes | 2.1 percent, 44 fatal crashes | 3.4 percent, 73 fatal crashes | 3.3 percent, 70 fatal crashes | 2.0 percent, 43 fatal crashes |
| Fri | 1.7 percent, 37 fatal crashes | 1.6 percent, 35 fatal crashes | 1.9 percent, 40 fatal crashes | 3.4 percent, 73 fatal crashes | 4.0 percent, 85 fatal crashes | 2.6 percent, 56 fatal crashes |
| Sat | 2.4 percent, 52 fatal crashes | 1.7 percent, 37 fatal crashes | 2.1 percent, 45 fatal crashes | 3.7 percent, 78 fatal crashes | 4.6 percent, 98 fatal crashes | 3.7 percent, 78 fatal crashes |
By hour
By month
- Jan4.4%
- Feb5.1%
- Mar5.5%
- Apr6.7%
- May9.0%
- Jun10.7%
- Jul12.4%
- Aug11.2%
- Sep9.9%
- Oct10.1%
- Nov7.5%
- Dec7.6%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where fatal crashes happen in Idaho: rural or urban, intersection, dark or daylight
75% of fatal crashes in Idaho from 2015 to 2024 were on rural roads, above the US share of 43%; 21% happened at or near an intersection, below the US share of 25%; 27% in the dark on unlit roads, about the US share; most, 58%, in daylight. Shares of fatal crashes from 2015 to 2024, against the share across the United States.
| Idaho | US | ||
|---|---|---|---|
| On rural roads | 75% | 43% | above the US share |
| At or near an intersection | 21% | 25% | below the US share |
| In daylight | 58% | 46% | above the US share |
| In the dark, road lit | 8.5% | 21% | below the US share |
| In the dark, road unlit | 27% | 28% | about the same as the US share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Who died on Idaho roads in 2024
Vehicle occupants were 73% of the 238 people killed on Idaho roads in 2024; motorcyclists 20% (47), pedestrians 5.9% (14), cyclists 1.3% (3).
| Road user | Deaths | Share |
|---|---|---|
| Vehicle occupants | 174 | 73% |
| Motorcyclists | 47 | 20% |
| Pedestrians | 14 | 5.9% |
| Cyclists | 3 | 1.3% |
| Others (on personal conveyances, in parked vehicles, in buildings) | 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 happen in Idaho: alcohol, speeding, seat belts, hit-and-run
A drinking driver was recorded in 31% of fatal crashes in Idaho from 2015 to 2024, above the US share of 26%; speeding in 22%, below the US share of 27%; a hit-and-run in 1.7%, below the US share of 6.5%; a driver recorded as distracted in 15%, above the US share of 8.7%; 58% of passenger-vehicle occupants killed with belt use known were unbelted, above the US share of 49%.
Shares of fatal crashes from 2015 to 2024 with the factor recorded, against the US share. "A drinking driver" is NHTSA's drinking-driver flag (police-reported drinking or any positive alcohol test), not its "alcohol-impaired" figure. "Unbelted" is the share of passenger-vehicle occupants killed whose belt use is known (1,520 in Idaho).
| Idaho | US | ||
|---|---|---|---|
| A drinking driver | 31% | 26% | above the US share |
| Speeding | 22% | 27% | below the US share |
| A distracted driver (as recorded) | 15% | 8.7% | above the US share |
| Occupants killed unbelted | 58% | 49% | above the US share |
| Hit-and-run | 1.7% | 6.5% | below the US share |
| A motorcycle involved | 14% | 16% | below the US share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What the first harmful event was
The first harmful event was a collision with another vehicle in 39%; a fixed object such as a tree, pole or barrier in 24%, a rollover in 22%, a pedestrian in 7.2%. What each fatal crash first hit, 2015 to 2024.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 846 | 39% |
| Fixed object (tree, pole, barrier, ditch) | 523 | 24% |
| Rollover | 468 | 22% |
| Pedestrian | 156 | 7.2% |
| Other | 117 | 5.4% |
| Cyclist | 33 | 1.5% |
| Parked vehicle | 16 | 0.7% |
| 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
Vehicles in fatal crashes in Idaho
Cars were 29% of the 3,156 vehicles in fatal crashes in Idaho from 2015 to 2024, pickups 23%, SUVs 20%, motorcycles 10%. Every vehicle in a fatal crash from 2015 to 2024, by body type.
| Type | Vehicles | Share |
|---|---|---|
| Cars | 929 | 29% |
| Pickups | 724 | 23% |
| SUVs | 617 | 20% |
| Motorcycles | 318 | 10% |
| Truck-tractors | 267 | 8.5% |
| Other trucks | 198 | 6.3% |
| Vans | 100 | 3.2% |
| Buses | 3 | 0.1% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Road deaths in Idaho per resident and per mile driven
| Idaho | US | ||
|---|---|---|---|
| Deaths per 100,000 residents, 2024 | 11.9 | 11.5 | about the US rate |
| Deaths per 100,000 residents a year, 2015 to 2024 | 13.1 | 11.8 | above the US rate |
| Deaths per 100 million vehicle-miles, 2024 | 1.19 | 1.19 | about the US rate |
Population 2,001,619 (Census Bureau estimate, 2024); 20,046 million vehicle-miles (FHWA Highway Statistics 2024, table VM-2). The only figures on this page not counted from FARS.
Questions about fatal crashes in Idaho
- How many people died in car accidents in Idaho in 2024?
- 238 people died in 219 fatal crashes on Idaho roads in 2024, 13.5% fewer than in 2023. That is 11.9 deaths per 100,000 residents, against 11.5 across the United States. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- What is the deadliest road in Idaho?
- I-84 had the most fatal crashes of any numbered road in Idaho from 2015 to 2024: 187, with 204 deaths. US 95 was second with 178.
- Which county in Idaho has the most fatal crashes?
- Ada County, with 240 fatal crashes and 259 deaths from 2015 to 2024, 29 of them in 2024.
- When do fatal crashes in Idaho happen most often?
- The heaviest slot from 2015 to 2024 was Saturday, 4 to 8 pm, with 98 fatal crashes.
- How many fatal crashes in Idaho involved a drinking driver?
- 673 of 2,159 fatal crashes in Idaho from 2015 to 2024 involved a driver NHTSA recorded as drinking, 31%, against 26% across the United States.
County pages for Idaho
Every county in Idaho with 30 or more fatal crashes from 2015 to 2024, each with its crashes by year, roads, hour and weekday, and deaths per 100,000 residents.
- Ada County 240
- Canyon County 227
- Kootenai County 143
- Bonneville County 116
- Twin Falls County 101
- Jerome County 90
- Bingham County 85
- Bannock County 84
- Elmore County 82
- Bonner County 76
- Idaho County 69
- Nez Perce County 69
- Cassia County 62
- Boise County 58
- Payette County 45
- Gooding County 43
- Minidoka County 36
- Shoshone County 35
- Jefferson County 33
- Fremont County 31
- Blaine County 30
- Valley County 30
Road pages for Idaho
Every numbered road in Idaho with 15 or more fatal crashes from 2022 to 2024, each with its crashes by year, county, hour and weekday.
Where the Idaho numbers come from
Every figure on this page except the rates is counted from NHTSA's Fatality Analysis Reporting System, the federal census of fatal crashes on US public roads, 2024 Annual Report File. A fatal crash is one in which someone died within 30 days. Road names are normalised ("I-35", "I 35" and "I-35/PURPLE HEART TRL" are the same road); frontage roads and ramps ("I35 FRONTAGE") are left out of road counts. Totals from the state highway department and news reports can differ by a few: they count from the state's own crash reports, often before every death within 30 days is known, while NHTSA's file is checked and revised once a year. Fields NHTSA coded as unknown show as "Not reported"; a share is only given over 20 crashes, otherwise "Not enough data". Rates per resident and per mile use Census Bureau population estimates and FHWA vehicle-miles, the only figures not counted from FARS. The full method.