Quick answer
According to crimebycity.com's analysis of NHTSA Fatality Analysis Reporting System data, Lake St. Louis, MO recorded 17 traffic deaths in 13 fatal crashes from 2020 to 2024 — 17.6 deaths per 100,000 residents per year vs the US average of 12.3. Its Road Danger Score of 91/100 means a higher traffic-fatality rate than about 91% of ranked US cities (#7 of 55 in Missouri, most dangerous first).
Road Danger Score
Traffic Deaths per 100K
Fatal Crashes 2020–2024
How Dangerous Are the Roads in Lake St. Louis, Missouri?
Lake St. Louis has a Road Danger Score of 91/100 (High Road Danger). Over the five years from 2020 to 2024, federal crash data recorded 13 fatal motor-vehicle crashes in the city, killing 17 people — 17.6 traffic deaths per 100,000 residents per year, above the national average of 12.3.
Lake St. Louis ranks #7 out of 55 ranked cities in Missouri and #186 out of 2,153 nationally for road danger (most dangerous first). The score is a percentile: a higher traffic-fatality rate than about 91% of ranked US cities.
The most distinctive factor in Lake St. Louis's fatal crashes: drinking driver involved — 39% of fatal crashes, versus 26% nationally.
Traffic deaths in Lake St. Louis fell 50% comparing 2020–2021 with 2023–2024.
What’s Behind Lake St. Louis’s Fatal Crashes (2020–2024)
Share of the city’s 13 fatal crashes where each factor was recorded. Factors overlap, so shares don’t sum to 100%.
| Crash Factor | Fatal Crashes | Lake St. Louis | National Avg |
|---|---|---|---|
| Drinking driver involved | 5 | 38.5% | 25.9% |
| Speeding involved | 3 | 23.1% | 28.2% |
| Pedestrian or cyclist involved | 3 | 23.1% | 22.5% |
| Dark / nighttime conditions | 7 | 53.8% | 49.8% |
Lake St. Louis Traffic Deaths by Year
Annual traffic fatalities in Lake St. Louis, Missouri from NHTSA FARS. Single-year swings are normal in smaller cities; the Road Danger Score uses the full 5-year window.
| Year | Traffic Deaths |
|---|---|
| 2024 | 2 |
| 2023 | 2 |
| 2022 | 5 |
| 2021 | 2 |
| 2020 | 6 |
Frequently Asked Questions
How many fatal car accidents happen in Lake St. Louis, Missouri?
According to NHTSA FARS data, Lake St. Louis recorded 13 fatal car accidents between 2020 and 2024, resulting in 17 traffic deaths — an average of 3.4 deaths per year.
How dangerous are the roads in Lake St. Louis?
Lake St. Louis has a Road Danger Score of 91/100, meaning its traffic-fatality rate is higher than about 91% of ranked US cities. The city averages 17.6 traffic deaths per 100,000 residents per year, compared to the US average of 12.3.
What causes fatal car accidents in Lake St. Louis?
Of Lake St. Louis's fatal crashes in 2020–2024, 39% involved a drinking driver, 23% involved speeding, 23% involved a pedestrian or cyclist, and 54% happened in dark conditions.
How many people die in car accidents in Lake St. Louis each year?
An average of 3.4 people per year died in car accidents in Lake St. Louis across 2020–2024 (17 total), based on the federal Fatality Analysis Reporting System.
Is driving in Lake St. Louis more dangerous than in other Missouri cities?
Lake St. Louis ranks #7 of 55 ranked Missouri cities for road danger (most dangerous first) and #186 of 2,153 nationally.