Quick answer
According to crimebycity.com's analysis of NHTSA data, New Hampshire recorded 628 traffic deaths in 580 fatal crashes from 2020 to 2024 — 9.0 per 100,000 residents per year, ranking #42 of 50 states (most dangerous first); the US average is 12.3.
Traffic Deaths 2020–2024
Deaths per 100K per Year
State Rank
New Hampshire Traffic Deaths by Year
The Most Dangerous New Hampshire Cities to Drive In
All 18 ranked New Hampshire 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 | Conway | 95/100 | 11 | 21.1 |
| 2 | Hooksett | 93/100 | 15 | 19.4 |
| 3 | Rochester | 79/100 | 22 | 13.0 |
| 4 | Laconia | 60/100 | 8 | 9.3 |
| 5 | Concord | 57/100 | 20 | 8.9 |
| 6 | Portsmouth | 56/100 | 10 | 8.7 |
| 7 | Bedford | 53/100 | 10 | 8.4 |
| 8 | Pelham | 52/100 | 6 | 8.2 |
| 9 | Manchester | 49/100 | 45 | 7.8 |
| 10 | Salem | 39/100 | 10 | 6.3 |
| 11 | Windham | 38/100 | 5 | 6.2 |
| 12 | Exeter | 38/100 | 5 | 6.2 |
| 13 | Merrimack | 37/100 | 9 | 6.1 |
| 14 | Keene | 29/100 | 6 | 5.2 |
| 15 | Londonderry | 28/100 | 7 | 5.2 |
| 16 | Dover | 24/100 | 8 | 4.7 |
| 17 | Hudson | 23/100 | 6 | 4.7 |
| 18 | Nashua | 23/100 | 21 | 4.6 |
Frequently Asked Questions
How many car accidents happen in New Hampshire?
NHTSA's Fatality Analysis Reporting System recorded 580 fatal car accidents in New Hampshire from 2020 to 2024, killing 628 people — an average of 126 traffic deaths per year.
How dangerous are New Hampshire roads compared to other states?
New Hampshire averages 9.0 traffic deaths per 100,000 residents per year, ranking #42 of 50 states (most dangerous first). The US average is 12.3 per 100,000.
What causes fatal car accidents in New Hampshire?
Of New Hampshire's fatal crashes in 2020–2024, 35% involved a drinking driver, 31% involved speeding, and 37% happened in dark conditions.
Which New Hampshire city is the most dangerous to drive in?
Among ranked New Hampshire cities, Conway has the highest Road Danger Score (95/100) at 21.1 traffic deaths per 100,000 residents per year.