NHTSA FARS 2020–2024 · Census population
Most Dangerous Counties in Connecticut
Quick answer: New Haven County recorded the most road deaths in Connecticut from 2020 to 2024 (438).
Per 100,000 residents a year · counties with 10,000+ people
Highest death rate
| # | County | Deaths per 100k / year | Deaths 2020–2024 | Population |
|---|
8 counties · click a heading to sort
Every county in Connecticut
| County | Deaths | Fatal crashes | Per 100k / yr | Pedestrians | At night | Alcohol | 2020→2024 | Deadliest roads |
|---|---|---|---|---|---|---|---|---|
| New Haven County | 438 | 406 | — | 24% | 60% | 31% | I-95, I-91, SR-10 | |
| Hartford County | 404 | 372 | — | 23% | 54% | 33% | I-84, I-91, SR-15 | |
| Fairfield County | 273 | 255 | — | 22% | 53% | 37% | I-95, SR-8, US-1 | |
| New London County | 139 | 131 | — | 9% | 44% | 42% | I-95, SR-32, I-395 | |
| Litchfield County | 104 | 101 | — | 6% | 36% | 34% | SR-8, US-7, US-202 | |
| Windham County | 80 | 73 | — | 9% | 44% | 40% | US-6, I-395, SR-101 | |
| Tolland County | 76 | 73 | — | 9% | 32% | 27% | I-84, SR-83, US-6 | |
| Middlesex County | 72 | 67 | — | 7% | 49% | 37% | SR-9, I-91, SR-66 |
Deaths = people killed in crashes in the county, 2020–2024. Pedestrians = share of deaths who were on foot. At night = share of fatal crashes in the dark. Alcohol = share of fatal crashes where police reported a driver had been drinking. Rate = yearly average deaths ÷ average population × 100,000. Connecticut replaced its counties with planning regions in 2022, so some rows have no population and no rate. Source: NHTSA FARS, U.S. Census Bureau.
More for Connecticut: deadliest highways and roads · Connecticut accidents today · get a police report · every state
Questions
Dangerous counties — FAQ
What is the most dangerous county in Connecticut for driving?
New Haven County recorded the most road deaths in Connecticut from 2020 to 2024 (438). Big counties lead on counts because more people drive there; the rate shows the risk for each resident.
How many people died on Connecticut roads from 2020 to 2024?
1,586 people, according to NHTSA's Fatality Analysis Reporting System, about 317 a year.
Where does this ranking come from?
Every fatal crash in NHTSA's FARS census for 2020–2024, placed in the county where it happened, divided by the county's average population from the U.S. Census Bureau. Rates are only ranked for counties with at least 10,000 residents.