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State
Connecticut
Residents 3,675,069Deaths 2024 310Deaths 2015–2024 2,983Counties 8Routes with pages 20
FARS data are based on police crash reports and other sources; the drunk-driving measure is based on the highest BAC of any driver in the crash. Latest data year: 2024.
Connecticut recorded 310 deaths in 285 fatal crashes in 2024, the latest year in NHTSA's FARS, and 2,983 deaths over 2015–2024.
That is 8.3 deaths per 100,000 residents a year, 30% lower than the national rate of 11.8. The ten-year total rose 8% from 2,750 in 2005–2014 to 2,983 in 2015–2024.
Relative to the national shares, motorcyclists stands out most: 19.6% of people killed against 14.5% nationally. 14.4% of the state's fatal crashes were on rural roads and 51.1% happened after dark.
Among counties with at least 50 deaths in the ten years, the highest rates per 100,000 residents were in Windham County (13.6), Litchfield County (11.3) and New London County (10.5).
Trend since 1975
Rate per 100,000 residents, 2000–2024
Year pages: 20242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999199819971996199519941993199219911990198919881987198619851984198319821981198019791978197719761975
Compared with the nation
| Measure | Connecticut | United States |
|---|---|---|
| Deaths per 100,000 residents a year, 2015–2024 | 8.3 | 11.8 |
| Deaths per 100,000 residents, 2024 | 8.4 | 11.5 |
| Deaths, 2015–2024 | 2,983 | 389,190 |
| Deaths per fatal crash | 1.1 | 1.1 |
| Change vs previous ten years | +8% | +7% |
| Share of the national toll | 0.8% | 100% |
Factors
Counties ranked by rate
Deaths per 100,000 residents a year over 2015–2024. Small counties on through routes can rank high on few deaths; the deaths column gives the scale. Counties with fewer than 10 fatal crashes in the ten years show no factor shares.
| # | County | Residents | Deaths 2015–2024 | Per 100k / yr | Deaths 2024 | Alcohol | Speeding |
|---|---|---|---|---|---|---|---|
| 1 | Windham County | 116,540 | 159 | 13.6 | 8 | 34% | 29% |
| 2 | Litchfield County | 179,610 | 204 | 11.3 | 14 | 37% | 31% |
| 3 | New London County | 264,999 | 281 | 10.5 | 35 | 41% | 35% |
| 4 | New Haven County | 851,948 | 810 | 9.5 | 81 | 32% | 31% |
| 5 | Tolland County | 150,600 | 143 | 9.5 | 13 | 34% | 33% |
| 6 | Middlesex County | 161,657 | 149 | 9.2 | 14 | 36% | 29% |
| 7 | Hartford County | 889,226 | 721 | 8.1 | 88 | 34% | 37% |
| 8 | Fairfield County | 942,426 | 516 | 5.5 | 57 | 35% | 35% |
Routes with the most fatal crashes
| # | Route | Type | Fatal crashes | Deaths | Alcohol | Speeding |
|---|---|---|---|---|---|---|
| 1 | Interstate 95 | Interstate | 155 | 178 | 40% | 32% |
| 2 | Interstate 91 | Interstate | 119 | 132 | 36% | 28% |
| 3 | Interstate 84 | Interstate | 118 | 133 | 31% | 31% |
| 4 | US Route 1 | US highway | 90 | 92 | 28% | 31% |
| 5 | State Route 8 | State highway | 87 | 98 | 36% | 25% |
| 6 | US Route 6 | US highway | 86 | 94 | 31% | 24% |
| 7 | State Route 15 | State highway | 76 | 83 | 38% | 29% |
| 8 | State Route 10 | State highway | 64 | 65 | 22% | 23% |
| 9 | US Route 44 | US highway | 60 | 64 | 30% | 22% |
| 10 | US Route 7 | US highway | 41 | 41 | 37% | 37% |
| 11 | State Route 2 | State highway | 36 | 36 | 47% | 39% |
| 12 | Interstate 395 | Interstate | 34 | 37 | 35% | 29% |
| 13 | State Route 9 | State highway | 33 | 37 | 36% | 21% |
| 14 | State Route 32 | State highway | 31 | 33 | 45% | 36% |
| 15 | State Route 34 | State highway | 29 | 32 | 41% | 41% |
| 16 | US Route 5 | US highway | 28 | 29 | 25% | 25% |
| 17 | State Route 69 | State highway | 24 | 26 | 38% | 25% |
| 18 | State Route 63 | State highway | 22 | 23 | 23% | 23% |
| 19 | State Route 66 | State highway | 21 | 22 | 29% | 24% |
| 20 | US Route 202 | US highway | 20 | 21 | 30% | 30% |
Signed Interstate, US and state routes with at least 20 fatal crashes in 2015–2024; 20 routes in Connecticut qualify. Local streets and county roads are not listed. Long routes carry more traffic and so more crashes; this is a count, not a rate.
Time of day and day of week
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Fatal crashes in Connecticut by weekday and hour, 2015–2024: darker cells are busier. 2,763 crashes with a known hour and weekday.
By weekday
Light condition
Road type
FHWA functional classes (FARS FUNC_SYS), share of fatal crashes with a reported class; tick marks the national share. What the classes mean.
Questions and answers
How many people died in crashes in Connecticut in 2024?
310 people in 285 fatal crashes, per NHTSA's FARS annual file. Over 2015–2024 the total is 2,983.
How does Connecticut compare with the national rate?
8.3 deaths per 100,000 residents a year over 2015–2024, against 11.8 nationally; in 2024 alone, 8.4 against 11.5.
Which counties in Connecticut have the most fatal crashes?
By deaths over 2015–2024: New Haven County (810), Hartford County (721) and Fairfield County (516). The county table ranks by rate per 100,000 residents instead, which is a fairer comparison across sizes.
What share of fatal crashes in Connecticut involved alcohol or speeding?
34.3% of fatal crashes in 2015–2024 had a driver reported as drinking (US: 26.3%) and 33.3% had a speeding-related driver (US: 27.2%).
Which routes in Connecticut have the most fatal crashes?
Interstate 95 (155 fatal crashes, 2015–2024), Interstate 91 (119 fatal crashes, 2015–2024) and Interstate 84 (118 fatal crashes, 2015–2024). Route pages exist for signed routes with at least 20 fatal crashes in the ten years.
Provenance
Source: NHTSA Fatality Analysis Reporting System annual files 1975–2024; US Census Bureau Population Estimates Program. Data through 31 Dec 2024; generated 30 Sep 2026. See methodology, sources and corrections.