Illinois recorded 1,168 traffic deaths in 2025 in preliminary IDOT data, down from 1,177. Cook County fell from 366 to 341, but Kane County rose and pedestrian deaths climbed to 218.
DZ DMVZone editorial · November 12, 2026 · 4 min read
Quick answer
Illinois had 1,168 traffic deaths in 2025 in preliminary Illinois Department of Transportation data, nine fewer than in 2024. Cook County deaths fell from 366 to 341. Kane County went the other way, from 30 to 37. Pedestrian deaths kept rising, to 218, up from 195 in 2022.
2025 deaths (preliminary)
1,168
2024 deaths
1,177
Cook County 2025
341
Pedestrian deaths 2025
218
Total deaths have fallen an average of 3.4% a year since 2021. The exception is people on foot, whose deaths have climbed steadily in the same period.
Counties to watch
County
2024 deaths
2025 deaths
Direction
Cook
366
341
Down
Kane
30
37
Up
DuPage, Lake, McHenry, Will
Not given
Not given
Down
Where deaths happen
Road type, 2025
About 34% on state or U.S. routes
Nearly 16% on interstates
Pedestrians
195 deaths in 2022
218 deaths in 2025
Why speed matters
A person hit at 30 mph has a 45% chance of being killed or seriously hurt
At 20 mph, it is 5%
Good to know
In towns and city neighborhoods, 10 mph makes the difference. Slowing from 30 to 20 cuts the chance of killing or badly hurting a pedestrian by about nine times.
Check yourself3 questions
About how many people died on Illinois roads in 2025?
Answer: B. Preliminary IDOT data shows 1,168 deaths.
Which Illinois county had more traffic deaths in 2025 than in 2024?
Answer: B. Kane County rose from 30 to 37.
Did Illinois pedestrian deaths rise or fall from 2022 to 2025?
Answer: C. They rose from 195 to 218.
About the data
Where do these numbers come from?
Preliminary Illinois Department of Transportation records, reported by the Daily Herald in January 2026.
Will the 2025 number change?
It may. Preliminary counts are updated as crash reports are finalized.
Why does Cook County have the most deaths?
It has by far the most people and miles driven in the state.
Sources
Checked against these pages on November 12, 2026. Laws change, so open the source before you rely on a number.
Rules and fees change. Always confirm the details with the official Illinois DMV or motor vehicle agency before you act. DMVZone practice questions are written to teach the rules and are not copies of the real test.