Fatal crash profile · County

Traffic deaths in St. Clair County, Illinois

County in Illinois · United States

Deaths, 2024
45
Fatal crashes
40
Population
251.4K

In 2024, 45 people died in 40 fatal crashes in St. Clair County, Illinois. That was 25.0% more than in 2023 (36) and the most since 2022. The death rate was 17.9 per 100,000 residents, compared with 9.3 in Illinois and 11.5 in the United States. St. Clair County had the 5th most traffic deaths among Illinois's counties. Between 2020 and 2024, 200 people died, an average of 40 a year. Pedestrians accounted for 24% of deaths, and 35% of fatal crashes were speeding-related.

Deaths

Traffic deaths

17.9

deaths per 100,000 residents in 2024

  • About 1.9 times the rate in Illinois: 9.3
  • About 1.6 times the rate in the United States: 11.5

15.8

average deaths per 100,000 residents a year, 2020–2024

  • About 1.6 times the average in Illinois: 9.8
  • About 1.3 times the average in the United States: 12.3

+25%

change in deaths from 2023 to 2024

36 deaths in 2023, 45 in 2024

  • Illinois: -5%
  • The United States: -4%
Traffic deaths by year, 2020–2024
Category Deaths Fatal crashes
2020 32 32
2021 40 34
2022 47 46
2023 36 36
2024 45 40

People who died within 30 days of a crash. A fatal crash can kill more than one person.

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Deaths per 100,000 residents, 2020–2024
Category Deaths per 100,000
2020 12.5
2021 15.7
2022 18.6
2023 14.3
2024 17.9

Uses Census population estimates, available from 2000.

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Road users

Who died

24%

of deaths were pedestrians

  • About 1.4 times the share in Illinois: 18%
  • About 1.4 times the share in the United States: 18%
Who died in 2024
Category Deaths
Vehicle occupants and others 29
Pedestrians 11
Motorcyclists 5
Cyclists 0
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Deaths by type, 2024
Type Deaths Share in St. Clair County Share in Illinois
Pedestrians 11 24% 18%
Motorcyclists 5 11% 13%
Cyclists 0 0% 3%
Alcohol-impaired driving crashes 16 36% 29%
Speeding-related crashes 18 40% 36%

Alcohol-impaired and speeding-related count everyone killed in those crashes, so a death can appear in more than one row.

Crash factors

Speeding, alcohol, night and weekend crashes

35%

of fatal crashes were speeding-related

  • About the same as the share in Illinois: 35%
  • About 1.2 times the share in the United States: 28%

35%

of fatal crashes involved a drinking driver

  • About 1.5 times the share in Illinois: 24%
  • About 1.4 times the share in the United States: 25%
Crash factors in 2024
Category St. Clair County Illinois United States
Speeding-related 35.0% 23.5% 24.8%
Alcohol-involved 35.0% 34.7% 28.1%
At night 70.0% 54.4% 53.6%
At weekends 50.0% 35.6% 32.6%

Share of fatal crashes. Alcohol-involved means a police-reported drinking driver.

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Timing

When crashes happen

70%

of fatal crashes happened at night

  • About 1.3 times the share in Illinois: 54%
  • About 1.3 times the share in the United States: 54%

50%

of fatal crashes happened at weekends

  • About 1.4 times the share in Illinois: 36%
  • About 1.5 times the share in the United States: 33%
Fatal crashes by hour of day
Category Fatal crashes
12am 13
1am 8
2am 12
3am 12
4am 8
5am 6
6am 3
7am 2
8am 2
9am 2
10am 6
11am 2
12pm 6
1pm 6
2pm 12
3pm 7
4pm 11
5pm 7
6pm 7
7pm 12
8pm 13
9pm 8
10pm 13
11pm 10

All crashes 2020–2024.

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Fatal crashes by day of week
Category Fatal crashes
Sun 35
Mon 18
Tue 20
Wed 25
Thu 23
Fri 29
Sat 38

All crashes 2020–2024.

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Fatal crashes by month
Category Fatal crashes
Jan 18
Feb 17
Mar 18
Apr 12
May 13
Jun 9
Jul 18
Aug 12
Sep 21
Oct 19
Nov 18
Dec 13

All crashes 2020–2024.

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Conditions

Weather and light

Weather at the time of the crash
Category Fatal crashes
Clear 161
Rain 15
Cloudy 3
Fog, Smog, Smoke 2
Freezing Rain or Drizzle 1
Sleet or Hail 1

All crashes 2020–2024. Crashes where conditions were not reported are left out.

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Light conditions at the time of the crash
Category Fatal crashes
Daylight 65
Dark - Not Lighted 62
Dark - Lighted 46
Dark - Unknown Lighting 9
Dawn 4
Dusk 1

All crashes 2020–2024. Crashes where conditions were not reported are left out.

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Roads and vehicles

Where and what, 2020–2024

Roads with the most fatal crashes

  1. I-6411
  2. SR-157
  3. I-2556
  4. SR-1616
  5. LAKE DR5
  6. SR-135
  7. SR-1585
  8. SR-35
  9. SR-3 MISSISSIPPI AVE4
  10. SR-1574

Road names as recorded in police reports.

Vehicles involved, by type
Category Vehicles
Cars 130
SUVs 48
Pickup trucks 35
Medium and heavy trucks 25
Motorcycles 15
Other vehicles 15
Vans 12
Other light trucks 1
Buses 1

All crashes 2020–2024.

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Vehicles most often involved

  1. GMC Sierra9
  2. Chevrolet Malibu8
  3. Ford F-1507
  4. Ford Fusion7
  5. Chevrolet Equinox6
  6. Chevrolet Silverado6
  7. Nissan Altima6
  8. Dodge Charger5
  9. Hyundai Elantra5
  10. Chevrolet Cruze4

Reflects how common a vehicle is as well as crash involvement; not a safety rating.

Crashes

Fatal crashes

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Fatal crashes in 2024. Crashes without reported coordinates are not shown.

Filter crashes
Crash factors
Date Location Deaths
Dec 25, 2024 — 2
Dec 18, 2024 — 1
Dec 15, 2024 Alorton 2
Oct 28, 2024 — 1
Oct 20, 2024 Centreville 1
Oct 13, 2024 Mascoutah 1
Oct 10, 2024 Caseyville 1
Sep 21, 2024 — 1
Sep 11, 2024 Washington Park 1
Sep 7, 2024 Fairview Heights 1
Sep 4, 2024 — 1
Aug 27, 2024 — 1
Aug 11, 2024 — 1
Jul 27, 2024 Sauget 1
Jul 13, 2024 Alorton 2
Jul 12, 2024 Cahokia 1
Jun 22, 2024 — 1
May 30, 2024 — 1
May 11, 2024 East Saint Louis 1
May 11, 2024 Belleville 1
May 7, 2024 East Saint Louis 1
May 2, 2024 Swansea 1
Apr 20, 2024 Brooklyn 1
Apr 20, 2024 Belleville 1
Apr 18, 2024 Cahokia 1

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Nearby and related

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Source: NHTSA Fatality Analysis Reporting System (FARS), 2020–2024. A fatal crash is one in which at least one person died within 30 days. Population: US Census Bureau estimates.