Quick answer
According to crimebycity.com's analysis of NHTSA data, Idaho recorded 1,215 traffic deaths in 1,089 fatal crashes over the most recent five-year period — 12.5 per 100,000 residents per year, ranking #25 of 50 states (most dangerous first); the US average is 12.3.
Traffic Deaths (5-Yr Total)
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 (5-Yr) | 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 over the most recent five-year period, 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 over the most recent five-year period, 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.