Quick answer
According to crimebycity.com's analysis of NHTSA data, Idaho recorded 1,215 traffic deaths in 1,089 fatal crashes from 2020 to 2024 — 12.5 per 100,000 residents per year, ranking #25 of 50 states (most dangerous first); the US average is 12.3.
Traffic Deaths 2020–2024
Deaths per 100K per Year
State Rank
Idaho Traffic Deaths by Year
The Most Dangerous Idaho Cities to Drive In
All 13 ranked Idaho cities by Road Danger Score (5-year traffic deaths per 100,000 residents, most dangerous first).
| # | City | Danger Score | Deaths (2020–2024) | Deaths per 100K/yr |
|---|---|---|---|---|
| 1 | Garden City | 60/100 | 6 | 9.3 |
| 2 | Blackfoot | 58/100 | 6 | 9.1 |
| 3 | Idaho Falls | 58/100 | 31 | 9.0 |
| 4 | Lewiston | 51/100 | 14 | 8.0 |
| 5 | Caldwell | 50/100 | 28 | 7.9 |
| 6 | Post Falls | 24/100 | 11 | 4.7 |
| 7 | Pocatello | 22/100 | 13 | 4.4 |
| 8 | Nampa | 21/100 | 26 | 4.4 |
| 9 | Boise | 19/100 | 48 | 4.1 |
| 10 | Twin Falls | 18/100 | 11 | 3.9 |
| 11 | Meridian | 10/100 | 20 | 2.8 |
| 12 | Rexburg | 5/100 | 3 | 1.5 |
| 13 | Moscow | 2/100 | 1 | 0.7 |
Frequently Asked Questions
How many car accidents happen in Idaho?
NHTSA's Fatality Analysis Reporting System recorded 1,089 fatal car accidents in Idaho from 2020 to 2024, killing 1,215 people — an average of 243 traffic deaths per year.
How dangerous are Idaho roads compared to other states?
Idaho averages 12.5 traffic deaths per 100,000 residents per year, ranking #25 of 50 states (most dangerous first). The US average is 12.3 per 100,000.
What causes fatal car accidents in Idaho?
Of Idaho's fatal crashes in 2020–2024, 32% involved a drinking driver, 23% involved speeding, and 35% happened in dark conditions.
Which Idaho city is the most dangerous to drive in?
Among ranked Idaho cities, Garden City has the highest Road Danger Score (60/100) at 9.3 traffic deaths per 100,000 residents per year.