Fatal crashes in St. Louis County, Missouri
In 2024, 112 people died in 106 fatal crashes in St. Louis County, Missouri, 13.1% more than in 2023. From 2015 to 2024 the county recorded 827 fatal crashes and 899 deaths, the 2nd most of 115 counties in Missouri.
11.3 deaths per 100,000 residents, against 15.3 across Missouri in 2024; 9 against 15.5 a year over 2015 to 2024. Population 992,929, Census Bureau estimate. All fatal crashes in Missouri.
Deaths in St. Louis County by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 106 | 112 |
| 2023 | 92 | 99 |
| 2022 | 89 | 97 |
| 2021 | 97 | 110 |
| 2020 | 85 | 94 |
| 2019 | 74 | 77 |
| 2018 | 69 | 77 |
| 2017 | 80 | 86 |
| 2016 | 70 | 78 |
| 2015 | 65 | 69 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
The deadliest roads in St. Louis County
I-270 had the most fatal crashes of any numbered road in St. Louis County from 2015 to 2024: 88, with 96 deaths. The 15 roads listed held 51% of all fatal crashes in St. Louis County from 2015 to 2024; 6 are interstates, 1 US route, 8 state highways. 60% of the county's fatal crashes were on an interstate, US or state route; the other 40% were on county roads and city streets. Routes are listed from 5 fatal crashes.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | I-270 | 88 | 96 | 31 | |
| 2 | US 67 | 37 | 38 | 9 | |
| 3 | I-70 | 33 | 38 | 11 | |
| 4 | I-44 | 33 | 34 | 11 | |
| 5 | State Highway 367 | 30 | 33 | 6 | no page |
| 6 | I-55 | 24 | 28 | 10 | |
| 7 | State Highway AC | 23 | 25 | 17 | |
| 8 | State Highway 180 | 23 | 23 | 8 | no page |
| 9 | I-170 | 22 | 23 | 8 | no page |
| 10 | State Highway 141 | 22 | 22 | 10 | no page |
| 11 | State Highway D | 21 | 24 | 5 | |
| 12 | State Highway 231 | 18 | 20 | 5 | no page |
| 13 | State Highway 100 | 16 | 17 | 4 | |
| 14 | I-64 | 15 | 16 | 3 | no page |
| 15 | State Highway 340 | 14 | 14 | 4 | no page |
Florissant had 5.3% of the county's fatal crashes from 2015 to 2024, 44 of 827.
Cities NHTSA filed, with their fatal crashes from 2015 to 2024: Florissant 44, Berkeley 39, Ferguson 34, Jennings 33, Bridgeton 32, Hazelwood 26, Maryland Heights 23, Chesterfield 18. The city is not filed for crashes outside a city.
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen in St. Louis County
The heaviest slot is Friday, 8 pm to midnight, with 46 fatal crashes from 2015 to 2024. The worst hour is 9 pm to 10 pm; the worst month is October.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 4.0 percent, 33 fatal crashes | 0.4 percent, 3 fatal crashes | 1.1 percent, 9 fatal crashes | 1.5 percent, 12 fatal crashes | 3.7 percent, 31 fatal crashes | 3.0 percent, 25 fatal crashes |
| Mon | 1.6 percent, 13 fatal crashes | 1.7 percent, 14 fatal crashes | 1.5 percent, 12 fatal crashes | 2.9 percent, 24 fatal crashes | 2.3 percent, 19 fatal crashes | 3.4 percent, 28 fatal crashes |
| Tue | 1.6 percent, 13 fatal crashes | 1.1 percent, 9 fatal crashes | 1.9 percent, 16 fatal crashes | 1.9 percent, 16 fatal crashes | 3.6 percent, 30 fatal crashes | 3.9 percent, 32 fatal crashes |
| Wed | 1.9 percent, 16 fatal crashes | 2.1 percent, 17 fatal crashes | 1.5 percent, 12 fatal crashes | 1.9 percent, 16 fatal crashes | 3.3 percent, 27 fatal crashes | 3.1 percent, 26 fatal crashes |
| Thu | 1.6 percent, 13 fatal crashes | 1.6 percent, 13 fatal crashes | 1.5 percent, 12 fatal crashes | 2.2 percent, 18 fatal crashes | 2.9 percent, 24 fatal crashes | 2.8 percent, 23 fatal crashes |
| Fri | 2.4 percent, 20 fatal crashes | 2.3 percent, 19 fatal crashes | 2.2 percent, 18 fatal crashes | 1.8 percent, 15 fatal crashes | 3.3 percent, 27 fatal crashes | 5.6 percent, 46 fatal crashes |
| Sat | 3.6 percent, 30 fatal crashes | 1.3 percent, 11 fatal crashes | 1.3 percent, 11 fatal crashes | 2.8 percent, 23 fatal crashes | 2.3 percent, 19 fatal crashes | 3.9 percent, 32 fatal crashes |
By hour
By month
- Jan7.4%
- Feb5.9%
- Mar7.6%
- Apr7.9%
- May9.3%
- Jun8.1%
- Jul10.2%
- Aug8.7%
- Sep7.9%
- Oct10.4%
- Nov9.7%
- Dec7.0%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in St. Louis County first hit
The first harmful event was a collision with another vehicle in 41%; a fixed object such as a tree, pole or barrier in 26%, a pedestrian in 25%, a rollover in 2.9%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 335 | 41% |
| Fixed object (tree, pole, barrier, ditch) | 213 | 26% |
| Pedestrian | 204 | 25% |
| Other | 33 | 4.0% |
| Rollover | 24 | 2.9% |
| Parked vehicle | 10 | 1.2% |
| Cyclist | 8 | 1.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes in St. Louis County compare with Missouri
The largest difference from Missouri: from 2015 to 2024, 3.9% of fatal crashes in St. Louis County were on rural roads, against 52% across Missouri. Also above the Missouri share: intersections, hit-and-runs and pedestrians. Below it: unbelted occupants and motorcycles. Shares of fatal crashes from 2015 to 2024, against the share across all of Missouri. A share is only given over 20 crashes; above or below means more than chance would give on 827 crashes.
| St. Louis | Missouri | ||
|---|---|---|---|
| On rural roads | 3.9% | 52% | below the Missouri share |
| At or near an intersection | 25% | 21% | above the Missouri share |
| In the dark, road unlit | 25% | 28% | about the same as the Missouri share |
| A drinking driver | 28% | 28% | about the same as the Missouri share |
| Speeding | 37% | 37% | about the same as the Missouri share |
| A distracted driver (as recorded) | 9.2% | 8.9% | about the same as the Missouri share |
| Occupants killed unbelted | 57% | 63% | below the Missouri share |
| Hit-and-run | 9.3% | 5.2% | above the Missouri share |
| A motorcycle involved | 12% | 15% | below the Missouri share |
| Pedestrians among the dead | 24% | 12% | above the Missouri share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in St. Louis County, Missouri
- How many people died in car accidents in St. Louis County in 2024?
- 112 people died in 106 fatal crashes in St. Louis County, Missouri, in 2024, 13.1% more than in 2023. That is 11.3 deaths per 100,000 residents, against 15.3 across Missouri. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- What is the deadliest road in St. Louis County?
- I-270 had the most fatal crashes of any numbered road in St. Louis County from 2015 to 2024: 88, with 96 deaths.
- When do fatal crashes in St. Louis County happen most often?
- The heaviest slot from 2015 to 2024 was Friday, 8 pm to midnight, with 46 fatal crashes.
- How many fatal crashes in St. Louis County involved a drinking driver?
- 228 of 827 fatal crashes in St. Louis County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 28%, against 28% across Missouri.
Other counties in Missouri with a page
- Jackson County
- St. Louis city
- Greene County
- Jefferson County
- St. Charles County
- Clay County
- Franklin County
- Boone County
- Jasper County
- Newton County
- Cass County
- St. Francois County
All fatal crashes in Missouri, with every county ranked.
Where the St. Louis County numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in St. Louis County (county code 189). A fatal crash is one in which someone died within 30 days. The rate per 100,000 uses the Census Bureau's population estimate for the county; it is the only figure here not counted from FARS. Totals from state highway departments and news reports can differ: they count from their own crash reports, often before every death within 30 days is known, while NHTSA's file is checked against death certificates and revised once a year. The full method.
Download every county with a page as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/missouri/st-louis-county/, from NHTSA FARS (2024 Annual Report File).”